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	<title>Notas de aplicação de testes laboratoriais - NANOVEA: perfilômetros avançados, tribômetros, nanoindentadores e testadores de arranhões para testes de materiais</title>
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	<title>Notas de aplicação de testes laboratoriais - NANOVEA: perfilômetros avançados, tribômetros, nanoindentadores e testadores de arranhões para testes de materiais</title>
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		<title>Stent Coating Adhesion and Delamination Analysis Using Nano Scratch Testing</title>
		<link>https://nanovea.com/pt/stent-coating-adhesion-testing-nano-scratch/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=stent-coating-adhesion-testing-nano-scratch</link>
					<comments>https://nanovea.com/pt/stent-coating-adhesion-testing-nano-scratch/#respond</comments>
		
		<dc:creator><![CDATA[Andrew Shore]]></dc:creator>
		<pubdate>Wed, 25 Mar 2026 20:57:16 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Profilometry | Geometry and Shape]]></category>
		<category><![CDATA[Profilometry | Roughness and Finish]]></category>
		<category><![CDATA[Profilometry | Texture and Grain]]></category>
		<category><![CDATA[Profilometry Testing]]></category>
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					<description><![CDATA[<p>Application Note &#124; Stent Coating Adhesion Testing Stent Coating Adhesion and Delamination Analysis Using Nano Scratch Testing Quantifying Coating Failure and Adhesion Performance on Drug-Eluting Stents Request Coating Adhesion Testing Speak with an Application Engineer Research &#38; Experimental Testing Duanjie Li, PhD Visual Design &#38; Editorial Andrew Shore Introduction Blood is carried through arteries from [&#8230;]</p>
<p>The post <a href="https://nanovea.com/pt/stent-coating-adhesion-testing-nano-scratch/">Stent Coating Adhesion and Delamination Analysis Using Nano Scratch Testing</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
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									<p>Application Note | Stent Coating Adhesion Testing</p>								</div>
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					<h1 class="elementor-heading-title elementor-size-default">Stent Coating Adhesion and Delamination Analysis Using Nano Scratch Testing</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">Quantifying Coating Failure and Adhesion Performance on Drug-Eluting Stents</h2>				</div>
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															<img fetchpriority="high" decoding="async" width="1400" height="420" src="https://nanovea.com/wp-content/uploads/2026/03/stent-coating-delamination-nano-scratch-critical-load.jpg" class="attachment-full size-full wp-image-26273" alt="stent coating adhesion testing nano scratch delamination critical load" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Duanjie Li, PhD</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">Andrew Shore</p>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">Introdução</h2>				</div>
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									<p data-start="836" data-end="1458">Blood is carried through arteries from the heart to the rest of the body. Any weakening or blockage of these vessels can pose significant health risks and may become life-threatening. A stent is a small mesh tube inserted into the lumen of a blood vessel to treat narrowed or weakened arteries. Stent implantation is now a widely used procedure to support the arterial wall and restore blood flowᶦ.</p>								</div>
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															<img decoding="async" width="1200" height="320" src="https://nanovea.com/wp-content/uploads/2026/03/medical-stent-mesh-structure-metal-stent-geometry.jpg" class="attachment-full size-full wp-image-26304" alt="" />															</div>
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									<p>Metal stent mesh geometry illustrating the structural complexity of vascular implant design.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Why coating adhesion matters in drug-eluting stents</h2>				</div>
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									<p data-start="786" data-end="1054">Drug-eluting stents represent a major advancement in stent technology. They incorporate a biodegradable, biocompatible polymer coating that enables controlled drug release at the arterial site, helping to inhibit intimal thickening and reduce the risk of restenosisᶦᶦ.</p><p data-start="1056" data-end="1284">A critical concern in these systems is the delamination of the polymer coating from the metallic stent substrate. This coating carries the drug-eluting layer, and its adhesion directly impacts device performance and reliability.</p><p data-start="1286" data-end="1537">To improve coating adhesion, stents are often designed with complex geometries. In this study, the polymer coating is located at the bottom of grooves within the stent mesh. This configuration presents a significant challenge for adhesion measurement.</p><p data-start="1539" data-end="1795">A reliable method is required to quantitatively evaluate the interfacial strength between the polymer coating and the metal substrate. The small diameter of the stent mesh, comparable to a human hair, combined with its three-dimensional geometry, requires:</p><ul data-start="1796" data-end="1916"><li data-section-id="1n0qc6y" data-start="1796" data-end="1834">ultrafine X-Y positioning accuracy</li><li data-section-id="1003zy" data-start="1835" data-end="1870">precise control of applied load</li><li data-section-id="q3r43w" data-start="1871" data-end="1916">accurate depth measurement during testing</li></ul>								</div>
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									<p>ℹ️<em data-start="1410" data-end="1468"> Saiba mais sobre <a href="https://nanovea.com/nanoindentation-and-scratch-testing-lab-services/">nanoindentation and scratch testing lab services for coating adhesion and failure analysis</a>.</em></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Measurement Method</h2>				</div>
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									<p data-start="267" data-end="454">Nano scratch testing is performed using the <a href="https://nanovea.com/instruments/pb1000/">Testador Mecânico NANOVEA PB1000</a>, in Nano Scratch Mode, to evaluate the cohesive and adhesive strength of the polymer coating on the metal mesh of stent samples.</p><p data-start="460" data-end="648">Controlled scratch measurements are carried out on stent geometries with dimensions comparable to a human hair, enabling precise evaluation of coating adhesion on complex stent structures.</p>								</div>
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									<p style="text-align: center; font-size: 20pt; color: black;">NANOVEA <span style="font-size: 20pt; color: #1b96cf;">PB1000 Advanced</span></p><p style="text-align: center; font-size: 20pt; color: black;">Testador Mecânico</p>								</div>
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							<img decoding="async" width="300" height="264" src="https://nanovea.com/wp-content/uploads/2026/01/nanoindenter-scratch-tester-platform-nanovea-pb1000.jpg" class="elementor-animation-grow attachment-medium size-medium wp-image-25767" alt="Plataforma de nanoindentador e testador de riscos NANOVEA PB1000 com módulos de nano e microindentação" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">Condições de teste</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">1. Regular Stent Samples</h3>				</div>
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									<p data-start="1228" data-end="1620">The stent is fixed on the sample stage, with a support wire inserted inside the stent tube to ensure stability during nano scratch testing. The NANOVEA Mechanical Tester is used to perform nano scratch measurements using the parameters summarized in Table 1, to evaluate the cohesive and adhesive strength of the polymer coating on the metal substrate.</p>								</div>
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									<div class="measurement-table-wrapper"><table class="measurement-table"><thead><tr><th>Parameter</th><th>Value</th></tr></thead><tbody><tr><td>Load type</td><td>Progressivo</td></tr><tr><td>Initial load</td><td>0.05 mN</td></tr><tr><td>Final load</td><td>300 and 100 mN</td></tr><tr><td>Sliding speed</td><td>0.5 mm/min</td></tr><tr><td>Sliding distance</td><td>0.5 mm</td></tr><tr><td>Indenter geometry</td><td>Cônico</td></tr><tr><td>Indenter material (tip)</td><td>Diamante</td></tr><tr><td>Raio da ponta do indentador</td><td>20 µm</td></tr><tr><td>Temperatura</td><td>24°C (room)</td></tr></tbody></table></div>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Tabela 1: </span>Test parameters for nano scratch measurements on regular stent samples</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">2. Grooved Stent Samples</h3>				</div>
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									<p data-start="1073" data-end="1296">The SEM image in Fig. 1 shows the cross-section of the stent sample. The stent features a groove with a depth of approximately 30 µm. The polymer coating, with a thickness of 10.8 µm, is located at the bottom of the groove.</p><p data-start="1298" data-end="1497">Standard 60° conical diamond tips are not sharp enough to reach the bottom of the groove without contacting the sidewalls. Therefore, a sharper 40° conical diamond tip is used in this study (Fig. 2).</p><p data-start="1499" data-end="1582">Nano scratch measurements are performed using the parameters summarized in Table 2.</p>								</div>
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<table class="measurement-table">
<thead>
<tr>
<th>Parameter</th>
<th>Value</th>
</tr>
</thead>
<tbody>
<tr>
<td>Load type</td>
<td>Progressivo</td>
</tr>
<tr>
<td>Initial load</td>
<td>0.1 mN</td>
</tr>
<tr>
<td>Final load</td>
<td>300 mN</td>
</tr>
<tr>
<td>Taxa de carregamento</td>
<td>300 mN/min</td>
</tr>
<tr>
<td>Scratch length</td>
<td>0.25 mm</td>
</tr>
<tr>
<td>Scratch speed</td>
<td>0.25 mm/min</td>
</tr>
<tr>
<td>Indenter geometry</td>
<td>40° cone</td>
</tr>
<tr>
<td>Indenter material (tip)</td>
<td>Diamante</td>
</tr>
<tr>
<td>Raio da ponta do indentador</td>
<td>5 µm</td>
</tr>
</tbody>
</table>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Table 2: </span>Test parameters for nano scratch measurements on grooved stent samples</p>								</div>
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															<img loading="lazy" decoding="async" width="932" height="1042" src="https://nanovea.com/wp-content/uploads/2026/03/stent-groove-coating-cross-section-sem-adhesion-analysis.jpg" class="attachment-full size-full wp-image-26288" alt="stent groove cross section polymer coating thickness adhesion analysis nano scratch testing" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 1: </span>SEM cross-section of a grooved stent showing polymer coating located at the bottom of the groove, highlighting the challenge of coating adhesion measurement in recessed geometries.</p>								</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2026/03/nano-scratch-diamond-tip-40-degree-stent-groove-testing.svg" class="attachment-full size-full wp-image-26289" alt="nano scratch diamond tip 40 degree stent groove coating adhesion testing schematic" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 2: </span>Schematic of a 40° conical diamond tip designed for nano scratch testing inside stent grooves, enabling accurate adhesion measurement without sidewall interference.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Resultados e Discussão</h2>				</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-55f91f5 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="55f91f5" data-element_type="section">
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									<p data-start="548" data-end="837">The stent mesh has a diameter of approximately 100 μm, comparable to a human hair. Precise positioning is therefore critical to ensure the scratch test is performed at the center of the stent mesh. The NANOVEA Mechanical Tester provides X–Y positioning accuracy down to 0.25 μm, enabling accurate test placement under the integrated optical microscope.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">1. Regular Stent Samples</h3>				</div>
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									<p data-start="641" data-end="857">Nano scratch testing is performed with a progressively increasing load up to 300 mN. The full scratch track on the stent is shown in Fig. 3a, while failure behavior at different stages is presented in Fig. 3b and 3c.</p><p data-start="859" data-end="893">Two critical loads are identified:</p><ul data-start="894" data-end="1061"><li data-section-id="14iz9qw" data-start="894" data-end="972">Lc1: the load at which the first visible damage appears on the coating</li><li data-section-id="1mmzt6b" data-start="973" data-end="1061">Lc2: the load at which the coating is fully removed and the substrate is exposed</li></ul><p data-start="1063" data-end="1226">The evolution of coefficient of friction (COF) and penetration depth is shown in Fig. 4, providing insight into the progression of coating failure during the test.</p><p data-start="1228" data-end="1499">The first signs of coating damage appear at Lc1 ≈ 14.5 mN. As the applied load increases, the diamond tip progressively penetrates the polymer coating, resulting in a wider and deeper scratch track. During this phase, the COF increases from approximately 0.05 to 0.7.</p><p data-start="1501" data-end="1756">At Lc2 ≈ 78.1 mN, the coating is fully delaminated from the metal substrate. Beyond this point, as the load continues to increase, both COF and penetration depth remain relatively stable due to the mechanical support of the underlying metal substrate.</p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-23d3399 elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="23d3399" data-element_type="section">
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															<img loading="lazy" decoding="async" width="1200" height="404" src="https://nanovea.com/wp-content/uploads/2026/03/stent-coating-nano-scratch-track-full-progressive-load.jpg" class="attachment-full size-full wp-image-26293" alt="nano scratch track stent coating progressive load adhesion testing" />															</div>
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									<p>(a) Full Scratch Track</p>								</div>
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				<section class="elementor-section elementor-inner-section elementor-element elementor-element-7016a63 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="7016a63" data-element_type="section">
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															<img loading="lazy" decoding="async" width="897" height="670" src="https://nanovea.com/wp-content/uploads/2026/03/stent-coating-initial-failure-lc1-nano-scratch-14-5mn.jpg" class="attachment-large size-large wp-image-26294" alt="" />															</div>
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									<p>(b) <strong data-start="599" data-end="616">Lc1 ≈ 14.5 mN</strong></p>								</div>
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															<img loading="lazy" decoding="async" width="897" height="670" src="https://nanovea.com/wp-content/uploads/2026/03/stent-coating-delamination-lc2-nano-scratch-78-1mn.jpg" class="attachment-large size-large wp-image-26295" alt="stent coating delamination lc2 nano scratch 78.1 mN adhesion testing" />															</div>
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									<p>(c) <strong data-start="625" data-end="642">Lc2 ≈ 78.1 mN</strong></p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 3: </span>Nano scratch track on a stent coating under progressively increasing load, showing (a) full scratch path, (b) initial coating failure at Lc1 ≈ 14.5 mN, and (c) complete coating delamination at Lc2 ≈ 78.1 mN.</p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-c9cfe8c elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="c9cfe8c" data-element_type="section">
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															<img loading="lazy" decoding="async" width="1751" height="725" src="https://nanovea.com/wp-content/uploads/2026/03/nano-scratch-cof-depth-stent-coating-failure-analysis.jpg" class="attachment-full size-full wp-image-26296" alt="nano scratch testing stent coating coefficient of friction depth progression adhesion failure" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 4: </span>Evolution of coefficient of friction (COF) and penetration depth during nano scratch testing of a stent coating under progressively increasing load, showing the progression of coating failure and transition to substrate support.</p>								</div>
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				<div class="elementor-element elementor-element-f9e723a elementor-widget elementor-widget-text-editor" data-id="f9e723a" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="246" data-end="537">Failures during nano scratch testing up to a maximum load of 300 mN occur at critical loads below 100 mN. To enable a more quantitative comparison of coating performance, additional tests are performed with a maximum load of 100 mN on two stent samples, referred to as Sample 1 and Sample 2.</p><p data-start="539" data-end="794">Fig. 5 compares the scratch tracks of Sample 1 and Sample 2 after nano scratch testing. Sample 1 exhibits the first sign of coating damage at a critical load of Lc1 ≈ 13.2 mN, while Sample 2 shows initial failure at a higher load of Lc1 ≈ 21.1 mN.</p><p data-start="796" data-end="1002">Coating delamination occurs at 62.5 mN for Sample 1. In contrast, the coating on Sample 2 remains intact throughout the test, continuing to protect the metal substrate under the same loading conditions.</p><p data-start="1004" data-end="1350">This behavior is further reflected in the evolution of coefficient of friction (COF) and penetration depth, as shown in Fig. 6. When the diamond tip penetrates through the coating and contacts the metal substrate in Sample 1, the COF reaches a peak while the penetration depth decreases due to the increased stiffness of the underlying substrate.</p>								</div>
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															<img loading="lazy" decoding="async" width="1797" height="288" src="https://nanovea.com/wp-content/uploads/2026/03/stent-coating-sample1-early-failure-nano-scratch.jpg" class="attachment-full size-full wp-image-26297" alt="stent coating sample 1 early failure nano scratch track delamination adhesion testing" />															</div>
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									<p>(a) Sample 1 – Early Coating Failure</p>								</div>
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															<img loading="lazy" decoding="async" width="1797" height="288" src="https://nanovea.com/wp-content/uploads/2026/03/stent-coating-sample2-high-adhesion-nano-scratch.jpg" class="attachment-full size-full wp-image-26298" alt="stent coating sample 2 high adhesion nano scratch track minimal damage testing" />															</div>
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									<p>(b) Sample 2 – Improved Coating Integrity</p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 5: </span>Comparison of nano scratch tracks for two stent coatings, showing (a) early coating failure and delamination in Sample 1, and (b) improved coating integrity in Sample 2 under the same loading conditions.</p>								</div>
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															<img loading="lazy" decoding="async" width="1500" height="913" src="https://nanovea.com/wp-content/uploads/2026/03/nano-scratch-cof-depth-comparison-stent-coating-adhesion.jpg" class="attachment-full size-full wp-image-26299" alt="nano scratch testing stent coating COF depth comparison sample 1 sample 2 adhesion performance" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 6: </span>Comparison of coefficient of friction (COF) and penetration depth for Sample 1 and Sample 2 during nano scratch testing, showing earlier substrate contact and higher friction response in Sample 1, indicating weaker coating adhesion.</p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-f64c74c elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="f64c74c" data-element_type="section">
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					<h3 class="elementor-heading-title elementor-size-default">2. Grooved Stent Samples</h3>				</div>
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									<p data-start="279" data-end="601">As shown in Fig. 1 and Fig. 7, the grooved stent mesh has a diameter of approximately 90 μm, comparable to a human hair. The groove has a width of ~50 μm and a depth of 30 μm. This geometry presents a significant challenge for nano scratch testing, particularly for evaluating coating adhesion at the bottom of the groove.</p><p data-start="603" data-end="847">Precise positioning is critical to locate the scratch test within the groove. The nano scratch test is performed with a progressively increasing load up to 300 mN. The full scratch tracks of grooved stent Samples 3 and 4 are compared in Fig. 7.</p><p data-start="849" data-end="1108">The critical load Lc is defined as the load at which the coating fails and the substrate becomes exposed. The evolution of normal load and penetration depth, shown in Fig. 8, provides further insight into the progression of coating failure during testing.</p><p data-start="1110" data-end="1331">As the applied load increases, the diamond tip progressively penetrates the polymer coating, resulting in a deeper scratch track. When the critical load Lc is reached, the coating delaminates from the metal substrate.</p><p data-start="1333" data-end="1516">Sample 3 exhibits coating failure at Lc ≈ 126 mN, while Sample 4 fails at a higher load of Lc ≈ 173 mN. This difference indicates stronger adhesion of the coating in Sample 4.</p><p data-start="1518" data-end="1773">The measured critical loads enable quantitative comparison of coating adhesion performance. Under the same testing conditions, the coating on Sample 4 demonstrates higher resistance to delamination, making it the better-performing candidate in this study.</p>								</div>
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															<img loading="lazy" decoding="async" width="1794" height="966" src="https://nanovea.com/wp-content/uploads/2026/03/stent-groove-coating-failure-sample3-nano-scratch-126mn.jpg" class="attachment-full size-full wp-image-26300" alt="stent groove coating failure sample 3 nano scratch 126 mN adhesion testing" />															</div>
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									<p>(c) Sample 3 – Coating Failure in Groove (Lc ≈ 126 mN)</p>								</div>
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															<img loading="lazy" decoding="async" width="1794" height="966" src="https://nanovea.com/wp-content/uploads/2026/03/stent-groove-coating-high-adhesion-sample4-nano-scratch-173mn.jpg" class="attachment-full size-full wp-image-26301" alt="stent groove coating adhesion sample 4 nano scratch 173 mN minimal failure testing" />															</div>
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									<p>(d) Sample 4 – Higher Adhesion in Groove (Lc ≈ 173 mN)</p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 7: </span>Nano scratch tracks inside stent grooves for Samples 3 and 4, showing (c) coating failure at Lc ≈ 126 mN in Sample 3 and (d) higher adhesion with delayed failure at Lc ≈ 173 mN in Sample 4.</p>								</div>
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															<img loading="lazy" decoding="async" width="1500" height="680" src="https://nanovea.com/wp-content/uploads/2026/03/nano-scratch-load-depth-sample3-grooved-stent-failure.jpg" class="attachment-full size-full wp-image-26302" alt="" />															</div>
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									<p>(a) Sample 3 – Earlier Coating Failure (Lc ≈ 126 mN)</p>								</div>
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															<img loading="lazy" decoding="async" width="1500" height="680" src="https://nanovea.com/wp-content/uploads/2026/03/nano-scratch-load-depth-sample4-grooved-stent-high-adhesion.jpg" class="attachment-full size-full wp-image-26303" alt="" />															</div>
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									<p data-start="319" data-end="387">(b) Sample 4 – Delayed Failure and Higher Adhesion (Lc ≈ 173 mN)</p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">Fig. 8: </span>Evolution of normal load and penetration depth during nano scratch testing inside stent grooves for Samples 3 and 4, showing earlier coating failure in Sample 3 and delayed failure at higher load in Sample 4. The vertical green line indicates the critical load (Lc) where coating delamination occurs.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Conclusão</h2>				</div>
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									<p data-start="245" data-end="468">This study demonstrates the ability of the NANOVEA Mechanical Tester to quantitatively evaluate the cohesive and adhesive strength of polymer coatings on both regular and grooved stent geometries using nano scratch testing.</p><p data-start="470" data-end="825">The recessed geometry of the stent grooves, approximately 50 μm wide and 30 μm deep, presents a significant challenge for coating adhesion measurement. The high X–Y positioning accuracy of 0.25 μm enables precise placement of the scratch test within these confined regions, allowing direct evaluation of coating performance where failure is most critical.</p><p data-start="827" data-end="1124">By applying a controlled, progressively increasing load, critical loads associated with coating failure can be identified and compared across samples. This approach enables reliable differentiation of coating adhesion performance and interfacial integrity, even on small, complex stent structures.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Referências</h2>				</div>
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									<p data-start="414" data-end="843"><em>[I] http://www.nhlbi.nih.gov/health/health-topics/topics/stents</em><br /><em>[II] http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402006000300008 </em></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Frequently Asked Questions About Stent Coating Adhesion Testing</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">What is stent coating adhesion testing?</h3>				</div>
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									<p data-start="168" data-end="494">Stent coating adhesion testing evaluates how strongly a polymer coating is bonded to the metal substrate of a stent. Techniques such as nano scratch testing quantify the load at which coating damage and delamination occur, providing measurable indicators of adhesion strength.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">What is critical load (Lc) in nano scratch testing?</h3>				</div>
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									<p data-start="658" data-end="746">Critical load (Lc) is the applied load at which a coating fails during a scratch test.</p><ul data-start="747" data-end="890"><li data-section-id="bhdxv4" data-start="747" data-end="813">Lc1 corresponds to the first visible damage in the coating</li><li data-section-id="4photk" data-start="814" data-end="890">Lc2 indicates complete coating removal and exposure of the substrate</li></ul><p data-start="892" data-end="967">These values are used to quantify and compare coating adhesion performance.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Why is coating adhesion important in drug-eluting stents?</h3>				</div>
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									<p data-start="168" data-end="494">Coating adhesion directly affects the reliability of drug-eluting stents. Poor adhesion can lead to coating delamination, which may compromise controlled drug release and increase the risk of device failure.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">How do you measure coating adhesion inside stent grooves?</h3>				</div>
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									<p data-start="168" data-end="494">Measuring adhesion inside stent grooves requires high positioning accuracy and appropriate indenter geometry. Nano scratch testing with sharp diamond tips allows access to recessed coating regions, enabling direct evaluation of adhesion within complex stent geometries.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">What does coefficient of friction (COF) indicate in scratch testing?</h3>				</div>
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									<p data-start="168" data-end="494">The coefficient of friction (COF) reflects changes in surface interaction during the scratch test. A sudden increase in COF often indicates coating failure and contact between the indenter and the underlying metal substrate.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">How can nano scratch testing compare different coating formulations?</h3>				</div>
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									<p data-start="168" data-end="494">Nano scratch testing enables direct comparison of coatings by measuring critical loads under controlled conditions. Higher critical loads indicate stronger adhesion and improved resistance to delamination, allowing selection of better-performing coating systems.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Need Reliable Stent Coating Adhesion Testing?</h2>				</div>
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				</div><p>The post <a href="https://nanovea.com/pt/stent-coating-adhesion-testing-nano-scratch/">Stent Coating Adhesion and Delamination Analysis Using Nano Scratch Testing</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Dental Surface Roughness Measurement &#038; 3D Tooth Topography</title>
		<link>https://nanovea.com/pt/dental-surface-roughness-measurement-3d-tooth-topography/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=dental-surface-roughness-measurement-3d-tooth-topography</link>
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		<dc:creator><![CDATA[Andrew Shore]]></dc:creator>
		<pubdate>Thu, 05 Mar 2026 21:02:01 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Profilometry | Geometry and Shape]]></category>
		<category><![CDATA[Profilometry | Roughness and Finish]]></category>
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		<guid ispermalink="false">https://nanovea.com/?p=26196</guid>

					<description><![CDATA[<p>Application Note &#124; Dental Surface Characterization Dental Surface Roughness Measurement and Full 3D Tooth Topography Surface Roughness Analysis Using Non-Contact Optical Profilometry Request Surface Analysis Ask an Expert Live Prepared by Walter Alabiso, PhD; Davide Morrone, MPhys; Andrew Shore, MA Introduction The ability to accurately characterize tooth surfaces, including micro-roughness and 3D surface topography at [&#8230;]</p>
<p>The post <a href="https://nanovea.com/pt/dental-surface-roughness-measurement-3d-tooth-topography/">Dental Surface Roughness Measurement &#038; 3D Tooth Topography</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="26196" class="elementor elementor-26196" data-elementor-post-type="post">
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									<p>Application Note | Dental Surface Characterization</p>								</div>
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					<h1 class="elementor-heading-title elementor-size-default">Dental Surface Roughness Measurement and Full 3D Tooth Topography</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">Surface Roughness Analysis Using Non-Contact Optical Profilometry</h2>				</div>
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															<img loading="lazy" decoding="async" width="1024" height="307" src="https://nanovea.com/wp-content/uploads/2026/03/dental-surface-roughness-measurement-3d-optical-profilometer.jpg" class="attachment-large size-large wp-image-26092" alt="Dental surface roughness measurement and 3D molar reconstruction using optical profilometry" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Preparado por</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">Walter Alabiso, PhD; Davide Morrone, MPhys; Andrew Shore, MA</p>				</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-b5911d1 elementor-section-content-middle elementor-reverse-mobile elementor-reverse-tablet elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="b5911d1" data-element_type="section" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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					<h2 class="elementor-heading-title elementor-size-default">Introdução</h2>				</div>
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									<p data-start="836" data-end="1458">The ability to accurately characterize tooth surfaces, including micro-roughness and 3D surface topography at the nanometer scale, enables advanced research and applications in orthodontics and dental materials science. Non-contact optical profilometry provides a precise method for measuring dental surface roughness and analyzing tooth surface morphology without damaging delicate structures. These measurements support the development of composite dental materials that replicate the natural surface roughness of enamel, as well as the design and fabrication of patient-specific dental casts and restorative components.</p><p data-start="1460" data-end="1982">Low surface roughness plays a primary role in limiting bacterial adhesion and plaque formation, thereby reducing the risk of cavities. An increase in average roughness (Ra) above 2 µm leads to a steep increase in biofilm formation in vivo.¹ An Ra of 0.2 µm is considered the threshold value below which no further reduction in bacterial adhesion can be expected.²</p><p data-start="1984" data-end="2182">Reconstruction of the tooth’s 3D surface topography enables the fabrication of dental casts, which are essential for accurate diagnosis, treatment planning, and the fabrication of dental appliances.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Non-Contact Optical Profilometry for Dental Surface Analysis</h2>				</div>
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									<p data-start="232" data-end="713">The present study illustrates the potential of NANOVEA’s high-precision non-contact optical profilometers for dental surface roughness measurement and 3D tooth topography analysis. Chromatic Light technology offers significant advantages over classical touch probe techniques. It acquires data points from deep crevices and complex geometries without introducing measurement errors or artifacts caused by local plastic deformation and without requiring extensive data manipulation.</p><p data-start="715" data-end="1135">Compared to focus variation systems, single-point optical sensing provides superior lateral and height accuracy, with X/Y resolution below 0.5 µm, maximum vertical resolution of 1.9 nm, and the ability to measure surface angles up to 87°. The technique is effective on transparent, opaque, specular, diffusive, polished, and rough dental surfaces, making it well suited for comprehensive dental surface characterization.</p>								</div>
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									<p>ℹ️<em data-start="1410" data-end="1468"> Saiba mais sobre <a href="https://nanovea.com/surface-profiling-lab-services/">non-contact optical profilometry and surface roughness measurement services</a>.</em></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Measurement Method</h2>				</div>
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									<p data-start="313" data-end="697">Nesta aplicação, o <a href="https://nanovea.com/instruments/jr25/" target="_blank" rel="noopener">NANOVEA JR25 Non-Contact Optical Profiler</a> was used to analyze the surface roughness and 3D surface topography of an adult human molar previously affected by tooth decay. The side of the tooth was scanned using a PS2–MG140 single-point optical sensor to measure surface roughness parameters over a defined region of interest and along multiple line profiles.</p><p data-start="699" data-end="888">The crown of the tooth was then scanned and reconstructed using a PS5–MG35 single-point optical sensor, which is suited for larger-area acquisition and full 3D tooth topography measurement.</p>								</div>
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									<p style="text-align: center; font-size: 20pt; color: black;"><br />NANOVEA <span style="font-size: 20pt; color: #1b96cf;">JR25 Portable</span><br />Perfilômetro Óptico</p>								</div>
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							<img loading="lazy" decoding="async" width="300" height="264" src="https://nanovea.com/wp-content/uploads/2026/01/nanovea-jr25-portable-optical-profilometer.jpg" class="elementor-animation-grow attachment-medium size-medium wp-image-25699" alt="NANOVEA JR25 portable optical profilometer for non-contact surface measurement" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">Surface Measurement Using NANOVEA Optical Profilometer</h2>				</div>
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									<p data-start="914" data-end="1026">Surface roughness measurements were performed on the lateral side of the molar crown, followed by full 3D reconstruction of the crown surface. Separate single-point optical sensors were used to optimize measurement accuracy for both localized roughness analysis and large-area surface topography acquisition.</p>								</div>
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				<section class="elementor-section elementor-inner-section elementor-element elementor-element-ce29651 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="ce29651" data-element_type="section">
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									<p>PS2 – MG140</p>								</div>
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															<img loading="lazy" decoding="async" width="351" height="465" src="https://nanovea.com/wp-content/uploads/2026/03/optical-profilometer-dental-surface-roughness-measurement.jpg" class="attachment-large size-large wp-image-26123" alt="" />															</div>
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									<p>Surface roughness analysis by area and parallel line profiles on the side of the tooth’s crown.</p>								</div>
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									<p>PS5 – MG35</p>								</div>
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															<img loading="lazy" decoding="async" width="351" height="465" src="https://nanovea.com/wp-content/uploads/2026/03/3d-tooth-topography-measurement-optical-profilometer.jpg" class="attachment-large size-large wp-image-26122" alt="" />															</div>
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									<p>Full 3D surface reconstruction of the tooth’s crown.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Parâmetros de medição</h2>				</div>
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									<p data-start="1228" data-end="1620">The following measurement parameters were used for localized surface roughness analysis and full 3D surface reconstruction of the molar crown using NANOVEA single-point optical sensors.</p>								</div>
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<table class="measurement-table">
<thead>
<tr>
<th>Parameter</th>
<th>Roughness Analysis (Area)</th>
<th>Roughness Analysis (Profiles)</th>
<th>Full 3D Reconstruction</th>
</tr>
</thead>
<tbody>
<tr>
<td>Optical Pen</td>
<td>PS2-MG140</td>
<td>PS2-MG140</td>
<td>PS5-MG35</td>
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<tr>
<td>Z-Range [µm]</td>
<td>300</td>
<td>300</td>
<td>10000</td>
</tr>
<tr>
<td>X-Distance [mm]</td>
<td>2.00</td>
<td>3.00</td>
<td>7.50</td>
</tr>
<tr>
<td>X-Step Size [µm]</td>
<td>1.70</td>
<td>1.70</td>
<td>10.00</td>
</tr>
<tr>
<td>Y-Distance [mm]</td>
<td>2.00</td>
<td>1.00</td>
<td>7.00</td>
</tr>
<tr>
<td>Y-Step Size [µm]</td>
<td>1.70</td>
<td>100.00</td>
<td>10.00</td>
</tr>
<tr>
<td>Averaging (Avg)</td>
<td>1</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td>Measurement Type</td>
<td>Direct</td>
<td>Direct</td>
<td>Direct</td>
</tr>
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<td>Acquisition Mode</td>
<td>Single Frequency</td>
<td>Single Frequency</td>
<td>Dual Frequency</td>
</tr>
<tr>
<td>Acquisition Rate [Hz]</td>
<td>200</td>
<td>200</td>
<td>100–400</td>
</tr>
<tr>
<td>Light Intensity [%]</td>
<td>100</td>
<td>100</td>
<td>100</td>
</tr>
</tbody>
</table>
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					<h2 class="elementor-heading-title elementor-size-default">Optical Profilometry Results</h2>				</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-55f91f5 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="55f91f5" data-element_type="section">
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					<h3 class="elementor-heading-title elementor-size-default">Surface Roughness Analysis (Area)</h3>				</div>
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									<p data-start="548" data-end="837">The PS2 single-point optical sensor was used to investigate fine surface features on the side of the tooth. The image below shows a false-color 2D surface map of the scanned region obtained by non-contact optical profilometry.</p>								</div>
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															<img loading="lazy" decoding="async" width="1162" height="906" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-scanned-region-2d-height-map.jpg" class="attachment-full size-full wp-image-26127" alt="False-color 2D height map of scanned tooth surface region" />															</div>
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									<p data-start="548" data-end="837">A least-squares degree-8 polynomial form removal was applied to isolate the surface roughness component. The roughness filters S-Gaussian 2.5 µm and L-Gaussian 0.8 mm were then applied according to ISO 25178. The resulting filtered surface and corresponding roughness parameters are presented below.</p>								</div>
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				<section class="elementor-section elementor-inner-section elementor-element elementor-element-e80acb9 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="e80acb9" data-element_type="section">
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															<img loading="lazy" decoding="async" width="950" height="748" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-surface-roughness-iso-25178-filtered-map.jpg" class="attachment-full size-full wp-image-26133" alt="" />															</div>
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									<div class="iso-roughness-table-wrapper"><table class="iso-roughness-table"><tbody><!-- Filter Settings --><tr class="section-header"><td colspan="4">ISO 25178 – Roughness (S-L)</td></tr><tr><td colspan="4"><strong>S-filter (λs):</strong> Gaussian, 2.5 µm</td></tr><tr><td colspan="4"><strong>F:</strong> [Workflow] Form removed (LS-poly 8)</td></tr><tr><td colspan="4"><strong>L-filter (λc):</strong> Gaussian, 0.8 mm</td></tr><!-- Height Parameters Header --><tr class="section-header"><td colspan="4">Height Parameters</td></tr><!-- Height Parameter Rows --><tr><td class="param-code">Sq</td><td>2.433</td><td>µm</td><td>Altura da raiz quadrada média</td></tr><tr><td class="param-code">Ssk</td><td>-0.102</td><td> </td><td>Skewness</td></tr><tr><td class="param-code">SKU</td><td>3.715</td><td> </td><td>Curtose</td></tr><tr><td class="param-code">Sp</td><td>18.861</td><td>µm</td><td>Altura máxima do pico</td></tr><tr><td class="param-code">Sv</td><td>16.553</td><td>µm</td><td>Maximum pit depth</td></tr><tr><td class="param-code">Sz</td><td>35.414</td><td>µm</td><td>Altura máxima</td></tr><tr><td class="param-code">Sa</td><td>1.888</td><td>µm</td><td>Altura média aritmética</td></tr></tbody></table></div>								</div>
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									<p data-start="117" data-end="216">The average surface roughness Sa is 1.888 µm, while the peak-to-valley height Sz reaches 35.414 µm.</p><p data-start="218" data-end="295">A 3D surface rendering of the filtered area is shown below for visualization.</p>								</div>
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															<img loading="lazy" decoding="async" width="1200" height="892" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-surface-roughness-3d-render-iso-filtered.jpg" class="attachment-full size-full wp-image-26129" alt="3D rendering of ISO 25178 filtered tooth surface roughness" />															</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-af84ca9 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="af84ca9" data-element_type="section">
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					<h3 class="elementor-heading-title elementor-size-default">Roughness Analysis (Profiles)</h3>				</div>
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									<p data-start="548" data-end="837">Surface roughness profiles were measured using a series of 11 parallel line scans along the X direction on the side of the tooth. The false-color 2D surface map of the raw scan is shown below.</p>								</div>
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															<img loading="lazy" decoding="async" width="1298" height="517" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-line-roughness-raw-scan-2d-map.jpg" class="attachment-full size-full wp-image-26143" alt="False-color 2D raw scan of tooth surface for line roughness profiles" />															</div>
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									<p data-start="548" data-end="837">The surface form was removed using a least-squares 8-degree polynomial prior to applying the metrological filters, leaving the residual surface shown below.</p>								</div>
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															<img loading="lazy" decoding="async" width="1298" height="517" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-line-roughness-residual-after-form-removal.jpg" class="attachment-full size-full wp-image-26144" alt="" />															</div>
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									<p data-start="548" data-end="837">A statistical analysis of the measured surface roughness profiles reveals the following line roughness parameters.</p>								</div>
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															<img loading="lazy" decoding="async" width="1670" height="606" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-line-roughness-profile-overlay-analysis.jpg" class="attachment-full size-full wp-image-26148" alt="Overlay of multiple tooth surface roughness profiles for statistical analysis" />															</div>
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									<div class="iso-profile-wrapper"><p><!-- Desktop / wide screens --></p><table class="iso-profile-table iso-profile-desktop"><colgroup> <col class="col-code" /> <col class="col-unit" /> <col class="col-desc" /> <col class="col-num" /> <col class="col-num" /> <col class="col-num" /> <col class="col-num" /> </colgroup><tbody><tr class="iso-profile-section"><td colspan="7">ISO 4287 – Roughness (S-L)</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>F:</strong> Nenhum</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>S-filter (λs):</strong> Gaussian, 2.5 µm</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>L-filter (λc):</strong> Gaussian, 0.8 mm</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>Evaluation length:</strong> All λc (3)</td></tr><tr class="iso-profile-section"><td colspan="7">Amplitude Parameters – Roughness Profile</td></tr><tr class="iso-profile-header"><th class="center"> </th><th class="center"> </th><th>Description</th><th class="center">Mean</th><th class="center">Std dev</th><th class="center">Min</th><th class="center">Max</th></tr><tr><td class="iso-profile-code">Rp</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Maximum peak height of the roughness profile</td><td class="center">5.683</td><td class="center">0.761</td><td class="center">4.315</td><td class="center">6.610</td></tr><tr><td class="iso-profile-code">Rv</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Maximum valley depth of the roughness profile</td><td class="center">6.242</td><td class="center">1.009</td><td class="center">4.701</td><td class="center">8.438</td></tr><tr><td class="iso-profile-code">Rz</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Maximum height of roughness profile</td><td class="center">11.925</td><td class="center">1.676</td><td class="center">9.123</td><td class="center">15.048</td></tr><tr><td class="iso-profile-code">Ra</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Arithmetic mean deviation of the roughness profile</td><td class="center">2.063</td><td class="center">0.297</td><td class="center">1.710</td><td class="center">2.629</td></tr><tr><td class="iso-profile-code">Rq</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Root-mean-square (RMS) deviation of the roughness profile</td><td class="center">2.523</td><td class="center">0.361</td><td class="center">2.057</td><td class="center">3.175</td></tr></tbody></table><p><!-- Mobile / tablet stacked cards --></p><div class="iso-profile-mobile"><div class="iso-profile-card-head">ISO 4287 – Roughness (S-L)</div><div class="iso-profile-meta-block"><div><strong>F:</strong> Nenhum</div><div><strong>S-filter (λs):</strong> Gaussian, 2.5 µm</div><div><strong>L-filter (λc):</strong> Gaussian, 0.8 mm</div><div><strong>Evaluation length:</strong> All λc (3)</div></div><div class="iso-profile-card-section">Amplitude Parameters – Roughness Profile</div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rp</span><span class="unit">µm</span></div><div class="desc">Maximum peak height of the roughness profile</div><div class="grid"><div>Mean<strong>5.683</strong></div><div>Std dev<strong>0.761</strong></div><div>Min<strong>4.315</strong></div><div>Max<strong>6.610</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rv</span><span class="unit">µm</span></div><div class="desc">Maximum valley depth of the roughness profile</div><div class="grid"><div>Mean<strong>6.242</strong></div><div>Std dev<strong>1.009</strong></div><div>Min<strong>4.701</strong></div><div>Max<strong>8.438</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rz</span><span class="unit">µm</span></div><div class="desc">Maximum height of roughness profile</div><div class="grid"><div>Mean<strong>11.925</strong></div><div>Std dev<strong>1.676</strong></div><div>Min<strong>9.123</strong></div><div>Max<strong>15.048</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Ra</span><span class="unit">µm</span></div><div class="desc">Arithmetic mean deviation of the roughness profile</div><div class="grid"><div>Mean<strong>2.063</strong></div><div>Std dev<strong>0.297</strong></div><div>Min<strong>1.710</strong></div><div>Max<strong>2.629</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rq</span><span class="unit">µm</span></div><div class="desc">Root-mean-square (RMS) deviation of the roughness profile</div><div class="grid"><div>Mean<strong>2.523</strong></div><div>Std dev<strong>0.361</strong></div><div>Min<strong>2.057</strong></div><div>Max<strong>3.175</strong></div></div></div></div></div>								</div>
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									<p data-start="184" data-end="276">The value of Ra is consistent with the Sa value extracted from the surface area measurement.</p><p data-start="278" data-end="659">Different metrological filters can be applied to distinguish between macroscopic waviness and microscopic surface roughness. For example, a coarser filter cut-off, such as the 8 mm cut-off used with the Robust Gaussian order-2 filter, produces a smoother waviness profile (red) that is less sensitive to sharp local variations and follows the original surface profile more loosely.</p>								</div>
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															<img loading="lazy" decoding="async" width="1855" height="800" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-surface-waviness-vs-roughness-filter-comparison.jpg" class="attachment-full size-full wp-image-26158" alt="Comparison of waviness and roughness profiles on tooth surface using coarse filter" />															</div>
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									<p data-start="548" data-end="837">Alternatively, a finer cut-off (e.g., 0.08 mm) enables the analysis of micro-roughness by removing the waviness component that follows the original profile at a larger scale, leaving the finer surface roughness features of the tooth visible.</p>								</div>
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															<img loading="lazy" decoding="async" width="1853" height="790" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-surface-microroughness-profile-filtering.jpg" class="attachment-full size-full wp-image-26159" alt="" />															</div>
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									<p data-start="548" data-end="837">The microroughness analysis obtained using a 0.08 mm L-Gaussian filter is presented below.</p>								</div>
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															<img loading="lazy" decoding="async" width="1200" height="431" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-surface-microroughness-final-profile.jpg" class="attachment-full size-full wp-image-26160" alt="Final microroughness profile of tooth surface after filtering" />															</div>
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									<div class="iso-profile-wrapper"><p><!-- Desktop / wide screens --></p><table class="iso-profile-table iso-profile-desktop"><colgroup> <col class="col-code" /> <col class="col-unit" /> <col class="col-desc" /> <col class="col-num" /> <col class="col-num" /> <col class="col-num" /> <col class="col-num" /> </colgroup><tbody><tr class="iso-profile-section"><td colspan="7">ISO 4287 – Roughness (S-L)</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>F:</strong> Nenhum</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>S-filter (λs):</strong> Gaussian, 2.5 µm</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>L-filter (λc):</strong> Gaussian, 0.08 mm</td></tr><tr class="iso-profile-meta"><td colspan="7"><strong>Evaluation length:</strong> All λc (37)</td></tr><tr class="iso-profile-section"><td colspan="7">Amplitude Parameters – Roughness Profile</td></tr><tr class="iso-profile-header"><th class="center"> </th><th class="center"> </th><th>Description</th><th class="center">Mean</th><th class="center">Std dev</th><th class="center">Min</th><th class="center">Max</th></tr><tr><td class="iso-profile-code">Rp</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Maximum peak height of the roughness profile</td><td class="center">1.582</td><td class="center">0.122</td><td class="center">1.342</td><td class="center">1.748</td></tr><tr><td class="iso-profile-code">Rv</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Maximum valley depth of the roughness profile</td><td class="center">1.466</td><td class="center">0.119</td><td class="center">1.254</td><td class="center">1.661</td></tr><tr><td class="iso-profile-code">Rz</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Maximum height of roughness profile</td><td class="center">3.049</td><td class="center">0.196</td><td class="center">2.820</td><td class="center">3.409</td></tr><tr><td class="iso-profile-code">Ra</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Arithmetic mean deviation of the roughness profile</td><td class="center">0.495</td><td class="center">0.047</td><td class="center">0.423</td><td class="center">0.597</td></tr><tr><td class="iso-profile-code">Rq</td><td class="iso-profile-unit">µm</td><td class="iso-profile-desc">Root-mean-square (RMS) deviation of the roughness profile</td><td class="center">0.643</td><td class="center">0.056</td><td class="center">0.562</td><td class="center">0.762</td></tr></tbody></table><p><!-- Mobile / tablet stacked cards --></p><div class="iso-profile-mobile"><div class="iso-profile-card-head">ISO 4287 – Roughness (S-L)</div><div class="iso-profile-meta-block"><div><strong>F:</strong> Nenhum</div><div><strong>S-filter (λs):</strong> Gaussian, 2.5 µm</div><div><strong>L-filter (λc):</strong> Gaussian, 0.8 mm</div><div><strong>Evaluation length:</strong> All λc (3)</div></div><div class="iso-profile-card-section">Amplitude Parameters – Roughness Profile</div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rp</span><span class="unit">µm</span></div><div class="desc">Maximum peak height of the roughness profile</div><div class="grid"><div>Mean<strong>5.683</strong></div><div>Std dev<strong>0.761</strong></div><div>Min<strong>4.315</strong></div><div>Max<strong>6.610</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rv</span><span class="unit">µm</span></div><div class="desc">Maximum valley depth of the roughness profile</div><div class="grid"><div>Mean<strong>6.242</strong></div><div>Std dev<strong>1.009</strong></div><div>Min<strong>4.701</strong></div><div>Max<strong>8.438</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rz</span><span class="unit">µm</span></div><div class="desc">Maximum height of roughness profile</div><div class="grid"><div>Mean<strong>11.925</strong></div><div>Std dev<strong>1.676</strong></div><div>Min<strong>9.123</strong></div><div>Max<strong>15.048</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Ra</span><span class="unit">µm</span></div><div class="desc">Arithmetic mean deviation of the roughness profile</div><div class="grid"><div>Mean<strong>2.063</strong></div><div>Std dev<strong>0.297</strong></div><div>Min<strong>1.710</strong></div><div>Max<strong>2.629</strong></div></div></div><div class="iso-profile-card"><div class="iso-profile-card-title"><span class="badge">Rq</span><span class="unit">µm</span></div><div class="desc">Root-mean-square (RMS) deviation of the roughness profile</div><div class="grid"><div>Mean<strong>2.523</strong></div><div>Std dev<strong>0.361</strong></div><div>Min<strong>2.057</strong></div><div>Max<strong>3.175</strong></div></div></div></div></div>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Full 3D Tooth Surface Topography Reconstruction</h3>				</div>
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									<p data-start="548" data-end="837">The extended Z-scan range of the PS5 optical sensor enables high-fidelity scanning of the entire tooth crown surface. The resulting 3D surface topography is shown below.</p>								</div>
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															<img loading="lazy" decoding="async" width="469" height="348" src="https://nanovea.com/wp-content/uploads/2026/03/tooth-crown-surface-topography-3d-optical-profilometry.jpg" class="attachment-full size-full wp-image-26172" alt="False-color surface topography map of full tooth crown measured with optical profilometer" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">2D VIEW: </span>2D surface map of the tooth crown measured with optical profilometry</p>								</div>
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															<img loading="lazy" decoding="async" width="1200" height="930" src="https://nanovea.com/wp-content/uploads/2026/03/molar-crown-3d-surface-reconstruction-profilometer.jpg" class="attachment-full size-full wp-image-26173" alt="3D surface reconstruction of molar crown from optical profilometer scan" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">3D VIEW: </span>High-fidelity 3D rendering of the molar crown surface obtained with optical profilometry</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Conclusão</h2>				</div>
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									<p data-start="401" data-end="560">In this application, the NANOVEA JR25 Non-Contact Optical Profiler was used to measure the surface roughness and 3D surface topography of an adult human molar.</p><p data-start="562" data-end="922">Both the area scan and the line profile analysis revealed a roughness Rq of approximately 2.5 µm and an Ra of about 1.9–2.0 µm. These values are consistent with results reported in the literature.³ The use of a narrower L-Gaussian filter with an 80 µm cut-off enabled further investigation of micro-roughness, revealing an Rq of 0.643 µm and an Ra of 0.495 µm.</p><p data-start="924" data-end="1270">The full 3D surface topography of the molar crown was reconstructed with high fidelity. The high measurement resolution allows detection of fine surface features and crevices. The resulting surface data can be easily processed and exported as STL files, enabling the design and fabrication of customized dental devices and restorative components.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Referências</h2>				</div>
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									<p data-start="414" data-end="843"><em>[1] Shin, B.W., et al. Surface Roughness of Prefabricated Pediatric Zirconia Crowns Following Simulated Toothbrushing. Pediatric Dentistry 44.5 (2022): 363–367.</em><br /><em>[2] Bollen, C.M.L., Paul Lambrechts, and Marc Quirynen. Comparison of surface roughness of oral hard materials to the threshold surface roughness for bacterial plaque retention: A review of the literature. Dental Materials 13.4 (1997): 258–269.</em><br /><em>[3] Suputtamongkol, K., et al. Surface roughness resulting from wear of lithia-disilicate-based posterior crowns. Wear 269.3–4 (2010): 317–322.</em></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Frequently Asked Questions About Dental Surface Roughness Measurement</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">What is dental surface roughness measurement?</h3>				</div>
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									<p data-start="168" data-end="494">Dental surface roughness measurement quantifies the microscopic texture of tooth surfaces using parameters such as Ra, Rq, and Sa. Optical profilometers measure these features without contacting the surface, allowing accurate analysis of enamel, restorative materials, and dental crowns.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Why use optical profilometry to measure tooth roughness?</h3>				</div>
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									<p data-start="168" data-end="494">Optical profilometry provides non-contact surface measurement with nanometer-scale vertical resolution. It captures 2D surface maps and full 3D surface topography of dental structures without damaging soft or polished surfaces.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">What roughness parameters are used for dental surface analysis?</h3>				</div>
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									<p data-start="168" data-end="494">Common roughness parameters include Ra (arithmetic mean roughness), Rq (root mean square roughness), Sa (areal roughness), and Sz (maximum surface height). These parameters help evaluate enamel wear, plaque adhesion risk, and the performance of restorative materials.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Why is surface roughness important in dentistry?</h3>				</div>
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									<p data-start="168" data-end="494">Surface roughness affects plaque retention, wear resistance, and the long-term performance of dental restorations. Controlling micro-roughness can reduce bacterial adhesion and improve the durability of dental materials.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Need Reliable Surface Roughness Measurement for Dental Materials?</h2>				</div>
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				</div><p>The post <a href="https://nanovea.com/pt/dental-surface-roughness-measurement-3d-tooth-topography/">Dental Surface Roughness Measurement &#038; 3D Tooth Topography</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Teste de resistência a arranhões de protetores de tela de telefones</title>
		<link>https://nanovea.com/pt/teste-de-resistencia-a-arranhoes-de-protetores-de-tela-de-telefones/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=scratch-resistance-testing-of-phone-screen-protectors</link>
					<comments>https://nanovea.com/pt/teste-de-resistencia-a-arranhoes-de-protetores-de-tela-de-telefones/#respond</comments>
		
		<dc:creator><![CDATA[Andrew Shore]]></dc:creator>
		<pubdate>Wed, 12 Nov 2025 17:42:04 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Indentation | Fracture Toughness]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Cohesive Failure]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=25222</guid>

					<description><![CDATA[<p>Teste de resistência a arranhões de protetores de tela de telefone Preparado por Stacey Pereira, Jocelyn Esparza e Pierre Leroux Entendendo a resistência a arranhões em protetores de tela de telefone Os revestimentos protetores em telas de telefone desempenham um papel fundamental na resistência a arranhões, na força de adesão e na durabilidade a longo prazo. Com o tempo, arranhões, microfissuras e delaminação do revestimento podem reduzir a clareza óptica e a confiabilidade - especialmente [...]</p>
<p>The post <a href="https://nanovea.com/pt/teste-de-resistencia-a-arranhoes-de-protetores-de-tela-de-telefones/">Scratch Resistance Testing of Phone Screen Protectors</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="25222" class="elementor elementor-25222" data-elementor-post-type="post">
						<section class="elementor-section elementor-top-section elementor-element elementor-element-f94c24a elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="f94c24a" data-element_type="section">
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					<h1 class="elementor-heading-title elementor-size-default">Teste de resistência a arranhões de protetores de tela de telefones</h1>				</div>
				</div>
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															<img loading="lazy" decoding="async" width="1024" height="307" src="https://nanovea.com/wp-content/uploads/2025/11/cracked-phone-screen-protector-scratch-test.jpg" class="attachment-large size-large wp-image-25259" alt="" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Preparado por</p>				</div>
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				<div class="elementor-element elementor-element-320eabc elementor-widget elementor-widget-heading" data-id="320eabc" data-element_type="widget" data-widget_type="heading.default">
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					<p class="elementor-heading-title elementor-size-default">Stacey Pereira, Jocelyn Esparza e Pierre Leroux</p>				</div>
				</div>
					</div>
		</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-b5911d1 elementor-section-content-middle elementor-reverse-mobile elementor-reverse-tablet elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="b5911d1" data-element_type="section" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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					<h2 class="elementor-heading-title elementor-size-default">Entendendo a resistência a arranhões nos protetores de tela de telefones</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-99f95f0 elementor-widget elementor-widget-text-editor" data-id="99f95f0" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="327" data-end="820">Os revestimentos de proteção nas telas dos telefones desempenham um papel fundamental na resistência a arranhões, na força de adesão e na durabilidade a longo prazo. Com o tempo, arranhões, microfissuras e delaminação do revestimento podem reduzir a clareza óptica e a confiabilidade, especialmente em ambientes de uso intenso. Para avaliar como os diferentes protetores de tela resistem a danos mecânicos, os testes de arranhões instrumentados fornecem uma visão quantificável dos mecanismos de falha do revestimento, incluindo adesão, coesão e comportamento de fratura.</p><p data-start="822" data-end="1136">Neste estudo, <a href="https://nanovea.com/instruments/pb1000/">Testador Mecânico NANOVEA PB1000</a> é usado para comparar os protetores de tela de TPU com os de vidro temperado sob carga progressiva controlada. Usando a detecção precisa de emissões acústicas, identificamos cargas críticas de falha e caracterizamos como cada material responde ao aumento do estresse mecânico.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Por que o teste de resistência a arranhões é importante para os protetores de tela</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-aae756f elementor-widget elementor-widget-text-editor" data-id="aae756f" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="1228" data-end="1620">Muitos usuários presumem que protetores mais espessos ou mais duros têm automaticamente um desempenho melhor, mas a durabilidade real depende de como o material se comporta sob carga progressiva, deformação da superfície e estresse localizado. Os testes de arranhões instrumentados permitem que os engenheiros meçam a adesão do revestimento, a força coesiva, a resistência ao desgaste da superfície e as cargas exatas nas quais as falhas se iniciam ou se propagam.</p><p data-start="1622" data-end="1964">Ao analisar os pontos de início de rachaduras, o comportamento de delaminação e os modos de falha, os fabricantes podem validar o desempenho do protetor de tela para P&amp;D, controle de qualidade ou benchmarking comparativo. Os testes de nano e micro arranhões oferecem uma visão repetível e orientada por dados sobre a durabilidade no mundo real, muito além das classificações tradicionais de dureza.</p>								</div>
				</div>
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									<p>ℹ️<em data-start="1410" data-end="1468"> Saiba mais sobre <a class="decorated-link cursor-pointer" href="https://nanovea.com/nanoindentation-and-scratch-testing-lab-services/" target="_new" rel="noopener" data-start="2047" data-end="2121">Serviços de teste de arranhões e aderência para revestimentos e protetores de tela.</a></em></p>								</div>
				</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-6911f48 elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="6911f48" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">Objetivo do teste de raspagem: <br>Medição de cargas de falha em protetores de tela</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-1fb52d9 elementor-widget elementor-widget-text-editor" data-id="1fb52d9" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="1702" data-end="2144">O objetivo deste estudo é demonstrar como o NANOVEA PB1000 Mechanical Tester realiza testes padronizados e repetíveis de resistência a arranhões em protetores de tela poliméricos e de vidro. Ao aumentar progressivamente a carga aplicada, o sistema detecta cargas críticas para falhas coesivas e adesivas, captura sinais de emissão acústica e correlaciona esses eventos com a profundidade do arranhão, a força de fricção e a deformação da superfície.</p><p data-start="2146" data-end="2656">Essa metodologia fornece um perfil mecânico completo de cada revestimento protetor, permitindo que os fabricantes e as equipes de P&amp;D avaliem as formulações de materiais, a força de adesão do revestimento, a durabilidade da superfície e a espessura ideal do revestimento para melhorar o desempenho do produto. Essas avaliações de riscos fazem parte do conjunto mais amplo da NANOVEA de <a href="https://nanovea.com/mechanical-testers/">soluções para testes mecânicos</a> usado para caracterizar revestimentos, filmes e substratos em ambientes de P&amp;D, controle de qualidade e produção.</p>								</div>
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																<a href="https://nanovea.com/instruments/pb1000/">
							<img loading="lazy" decoding="async" width="300" height="298" src="https://nanovea.com/wp-content/uploads/2023/06/NANOVEA-Scratch-Tester-amd-Nanoindentation.jpg" class="elementor-animation-grow attachment-medium size-medium wp-image-22859" alt="TESTADOR DE ARRANHÕES NANOVEA: TESTE DE DESGASTE DE REVESTIMENTO DE PTFE" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">Parâmetros do teste de raspagem e configuração do instrumento</h2>				</div>
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									<p data-start="1228" data-end="1620">A avaliação da resistência a arranhões dos protetores de tela de TPU e vidro temperado foi realizada em condições controladas para garantir a repetibilidade e a detecção precisa da carga de falha. Os parâmetros a seguir definem a configuração do teste de arranhões de carga progressiva usado no NANOVEA PB1000 Mechanical Tester.</p>								</div>
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<tbody>
<tr>
<td style="width: 50.0898%; padding: 6px 8px; color: #1b96cf; font-weight: bold; text-align: left;">TIPO CARREGADO</td>
<td style="width: 49.9102%; padding: 6px 8px; font-weight: bold; text-align: right;">PROGRESSIVO</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">CARGA INICIAL</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">0.1 N</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">CARGA FINAL</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">12 N</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">VELOCIDADE DE DESLIZAMENTO</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">3,025 mm/min</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">DISTÂNCIA DE DESLIZAMENTO</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">3 mm</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">GEOMETRIA INDENTER</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">ROCKWELL (CONE DE 120°)</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">MATERIAL DO INDENTADOR (PONTA)</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">DIAMANTE</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">RAIO DA PONTA INDENTADA</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">50 µm</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">ATMOSPHERE</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">AR</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">TEMPERATURA</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">24 °C (TEMPERATURA AMBIENTE)</td>
</tr>
</tbody>
</table>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 1:</span><span class="fontstyle0" style="color: #000000;"> <span class="fontstyle0">Parâmetros de teste usados para testes de arranhões</span> <br /></span></p>								</div>
				</div>
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															<img loading="lazy" decoding="async" width="1024" height="658" src="https://nanovea.com/wp-content/uploads/2025/11/nanovea-mechanical-tester-screen-protector-scratch-test.jpg" class="attachment-large size-large wp-image-25228" alt="Amostra de protetor de tela submetida a teste de arranhões no testador mecânico NANOVEA PB1000" />															</div>
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				<div class="elementor-element elementor-element-8e1a70e elementor-widget elementor-widget-text-editor" data-id="8e1a70e" data-element_type="widget" data-widget_type="text-editor.default">
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									<p>Amostra de protetor de tela montada no NANOVEA PB1000 Mechanical Tester durante a medição de arranhões com carga progressiva.</p>								</div>
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				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">Amostras de protetores de tela usadas para testes de resistência a arranhões</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-76e6903 elementor-widget elementor-widget-text-editor" data-id="76e6903" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="339" data-end="686">Dois materiais protetores de tela disponíveis no mercado foram selecionados para comparar as diferenças de resistência a arranhões, comportamento de falha e durabilidade mecânica. Ambas as amostras foram montadas com segurança no NANOVEA PB1000 Mechanical Tester e avaliadas sob condições idênticas de carga progressiva para garantir uma comparação consistente e imparcial.</p><p data-start="688" data-end="1108">O protetor de tela TPU representa um filme polimérico flexível com alta elasticidade, mas menor resistência à abrasão, enquanto o protetor de tela de vidro temperado representa um material rígido e quebradiço projetado para alta dureza e maior proteção contra impactos. O teste de ambos os materiais sob o mesmo perfil de carga permite uma avaliação clara de como a composição do material, a elasticidade e a dureza influenciam os modos de falha de arranhões.</p>								</div>
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				<div class="elementor-widget-container">
									<p>Protetor de tela TPU</p>								</div>
				</div>
				<div class="elementor-element elementor-element-576b237 elementor-widget elementor-widget-image" data-id="576b237" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="188" height="300" src="https://nanovea.com/wp-content/uploads/2025/11/nanovea-tpu-screen-protector-sample-scratch-test.jpg" class="attachment-medium size-medium wp-image-25234" alt="" />															</div>
				</div>
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									<p>Vidro temperado</p>								</div>
				</div>
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															<img loading="lazy" decoding="async" width="188" height="300" src="https://nanovea.com/wp-content/uploads/2025/11/nanovea-tempered-glass-screen-protector-sample-scratch-test.jpg" class="attachment-medium size-medium wp-image-25233" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 1:</span><span class="fontstyle0" style="color: #000000;"> Protetores de tela de TPU e vidro temperado preparados para testes de resistência a arranhões.<br /></span></p>								</div>
				</div>
				</div>
					</div>
				</div>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-55f91f5 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="55f91f5" data-element_type="section">
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						<div class="elementor-element elementor-element-fa65c07 elementor-widget elementor-widget-heading" data-id="fa65c07" data-element_type="widget" data-widget_type="heading.default">
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					<h2 class="elementor-heading-title elementor-size-default">Resultados do teste de arranhões: Modos de falha em protetores de tela de TPU vs. vidro temperado</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-402f283 elementor-widget elementor-widget-text-editor" data-id="402f283" data-element_type="widget" data-widget_type="text-editor.default">
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									<table style="border-collapse: collapse; width: 75%; margin: 0 auto; border: none;"><tbody><tr style="background-color: #1b96cf; color: #ffffff; text-align: center; font-weight: bold;"><td style="padding: 8px;">TIPO DE PROTETOR DE TELA</td><td style="padding: 8px;">CARGA CRÍTICA #1 (N)</td><td style="padding: 8px;">CARGA CRÍTICA #2 (N)</td></tr><tr><td style="padding: 6px 8px; font-weight: bold; text-align: center;">TPU</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">n/a</td><td style="padding: 6px 8px; font-weight: bold; text-align: center;">2.004 ± 0.063</td></tr><tr><td style="padding: 6px 8px; font-weight: bold; text-align: center;">VIDRO TEMPERADO</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">3.608 ± 0.281</td><td style="padding: 6px 8px; font-weight: bold; text-align: center;">7.44 ± 0.995</td></tr></tbody></table>								</div>
				</div>
				<div class="elementor-element elementor-element-a483c12 elementor-widget elementor-widget-text-editor" data-id="a483c12" data-element_type="widget" data-widget_type="text-editor.default">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 2:</span><span class="fontstyle0" style="color: #000000;"> Resumo das cargas críticas para cada amostra de protetor de tela.</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-1be118e elementor-widget elementor-widget-text-editor" data-id="1be118e" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="548" data-end="837">Como os protetores de tela de TPU e de vidro temperado têm propriedades mecânicas fundamentalmente diferentes, cada amostra apresentou modos de falha distintos e limites de carga crítica durante o teste de arranhões com carga progressiva. A Tabela 2 resume as cargas críticas medidas para cada material.</p><p data-start="839" data-end="1181">A carga crítica #1 representa o primeiro ponto observável de falha coesiva sob microscopia óptica, como início de rachadura ou fratura radial.</p><p data-start="839" data-end="1181">A Carga Crítica #2 corresponde ao primeiro grande evento detectado por meio do monitoramento de emissão acústica (AE), normalmente representando uma falha estrutural maior ou um evento de penetração.</p><h3 data-start="1188" data-end="1246"><strong data-start="1192" data-end="1244">Protetor de tela TPU - Comportamento de polímero flexível</strong></h3><p data-start="1247" data-end="1487">O protetor de tela TPU apresentou apenas um evento crítico significativo (Carga crítica #2). Essa carga corresponde ao ponto ao longo da trilha de arranhões em que o filme começou a se levantar, descascar ou delaminar da superfície da tela do telefone.</p><p data-start="1489" data-end="1789">Quando a carga crítica #2 (≈2,00 N) foi excedida, o indentador penetrou o suficiente para causar um arranhão visível diretamente na tela do telefone durante o restante do teste. Nenhum evento separado de Carga Crítica #1 foi detectável, o que é consistente com a alta elasticidade do material e a baixa resistência de coesão.</p><h3 data-start="1796" data-end="1864"><strong data-start="1800" data-end="1862">Protetor de tela de vidro temperado - Comportamento de falha frágil</strong></h3><p data-start="1865" data-end="1977">O protetor de tela de vidro temperado apresentou duas cargas críticas distintas, características de materiais frágeis:</p><ul data-start="1979" data-end="2284"><li data-start="1979" data-end="2142"><p data-start="1981" data-end="2142">Carga crítica #1 (≈3,61 N): Fraturas radiais e início de rachaduras foram observados no microscópio, indicando falha coesiva precoce da camada de vidro.</p></li><li data-start="2143" data-end="2284"><p data-start="2145" data-end="2284">Carga crítica #2 (≈7,44 N): Um grande pico de EA e um aumento acentuado na profundidade do arranhão indicaram a penetração do protetor em cargas mais altas.</p></li></ul><p data-start="2286" data-end="2495">Embora a magnitude do EA tenha sido maior do que a do TPU, nenhum dano foi transferido para a tela do telefone, demonstrando a capacidade do protetor de vidro temperado de absorver e distribuir a carga antes de uma falha catastrófica.</p><p data-start="2497" data-end="2665">Em ambos os materiais, a Carga Crítica #2 correspondeu ao momento em que o indentador rompeu o protetor de tela, confirmando o limite de proteção de cada amostra.</p>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-b58c652 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="b58c652" data-element_type="section">
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					<h3 class="elementor-heading-title elementor-size-default">Protetor de tela TPU: Dados do teste de arranhões e análise de falhas</h3>				</div>
				</div>
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									<table style="border-collapse: collapse; width: 50%; margin: 0 auto; border: none;"><tbody><tr style="background-color: #1b96cf; color: #ffffff; text-align: center; font-weight: bold;"><td style="padding: 8px;">SCRATCH</td><td style="padding: 8px;">CARGA CRÍTICA #2 (N)</td></tr><tr><td style="padding: 6px 8px; text-align: center; font-weight: bold;">1</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">2.033</td></tr><tr><td style="padding: 6px 8px; text-align: center; font-weight: bold;">2</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">2.047</td></tr><tr><td style="padding: 6px 8px; text-align: center; font-weight: bold;">3</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">1.931</td></tr><tr><td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; text-align: center;">MÉDIA</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">2.003</td></tr><tr><td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; text-align: center;">DESVIO PADRÃO</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">0.052</td></tr></tbody></table>								</div>
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				<div class="elementor-element elementor-element-7253696 elementor-widget elementor-widget-text-editor" data-id="7253696" data-element_type="widget" data-widget_type="text-editor.default">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 3:</span><span class="fontstyle0" style="color: #000000;"> Cargas críticas medidas durante o teste de arranhões do protetor de tela TPU.</span></p>								</div>
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				<div class="elementor-element elementor-element-88392d4 elementor-widget elementor-widget-image" data-id="88392d4" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="1024" height="453" src="https://nanovea.com/wp-content/uploads/2025/11/tpu-screen-protector-scratch-test-friction-normal-force-acoustic-emission-depth.jpg" class="attachment-large size-large wp-image-25239" alt="Gráfico mostrando atrito, força normal, emissões acústicas e profundidade versus comprimento do arranhão para o protetor de tela TPU testado no testador mecânico NANOVEA." />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Força de atrito, carga normal, emissão acústica (AE) e profundidade do arranhão vs. comprimento do arranhão para o protetor de tela TPU. <span class="fontstyle0">(B) Carga crítica #2</span><br /></span></p>								</div>
				</div>
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															<img loading="lazy" decoding="async" width="1024" height="768" src="https://nanovea.com/wp-content/uploads/2025/11/tpu-screen-protector-microscopy-critical-load-2-scratch-test.jpg" class="attachment-large size-large wp-image-25240" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Imagem de microscopia óptica do protetor de tela TPU na Carga Crítica #2 (ampliação de 5×; largura da imagem 0,8934 mm).<br /></span></p>								</div>
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															<img loading="lazy" decoding="async" width="1024" height="256" src="https://nanovea.com/wp-content/uploads/2025/11/tpu-screen-protector-post-scratch-test-full-length-image.jpg" class="attachment-large size-large wp-image-25241" alt="" />															</div>
				</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 4:</span><span class="fontstyle0" style="color: #000000;"> Imagem completa pós-arranhão do protetor de tela TPU mostrando o rastro completo do arranhão após o teste de carga progressiva.</span><span class="fontstyle0" style="color: #000000;"><br /></span></p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-b076c23 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="b076c23" data-element_type="section">
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					<h3 class="elementor-heading-title elementor-size-default">Protetor de tela de vidro temperado: Dados de carga crítica e comportamento de fratura</h3>				</div>
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				<div class="elementor-element elementor-element-88858e4 elementor-widget elementor-widget-text-editor" data-id="88858e4" data-element_type="widget" data-widget_type="text-editor.default">
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									<table style="border-collapse: collapse; width: 80%; margin: 0 auto; border: none;">
<tbody>
<tr style="background-color: #1b96cf; color: #ffffff; text-align: center; font-weight: bold;">
<td style="padding: 8px;">SCRATCH</td>
<td style="padding: 8px;">CARGA CRÍTICA #1 (N)</td>
<td style="padding: 8px;">CARGA CRÍTICA #2 (N)</td>
</tr>
<tr>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">1</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">3.923</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">7.366</td>
</tr>
<tr>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">2</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">3.382</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">6.483</td>
</tr>
<tr>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">3</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">3.519</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">8.468</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; text-align: center;">MÉDIA</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">3.653</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">6.925</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; text-align: center;">DESVIO PADRÃO</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">0.383</td>
<td style="padding: 6px 8px; text-align: center; font-weight: bold;">0.624</td>
</tr>
</tbody>
</table>								</div>
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				<div class="elementor-element elementor-element-93c922d elementor-widget elementor-widget-text-editor" data-id="93c922d" data-element_type="widget" data-widget_type="text-editor.default">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 4:</span><span class="fontstyle0" style="color: #000000;"> Cargas críticas medidas durante o teste de arranhões do protetor de tela de vidro temperado.</span></p>								</div>
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									<p>ℹ️<em data-start="1410" data-end="1468"> Para comparação com revestimentos de polímeros sem silicato, consulte nosso estudo sobre <a href="https://nanovea.com/ptfe-coating-wear-test/">Teste de desgaste do revestimento de PTFE</a>, que destaca o comportamento de falha em filmes de polímero de baixo atrito sob condições semelhantes de carga progressiva.</em></p>								</div>
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															<img loading="lazy" decoding="async" width="1024" height="453" src="https://nanovea.com/wp-content/uploads/2025/11/tempered-glass-screen-protector-scratch-test-friction-normal-force-acoustic-emission-depth.jpg" class="attachment-large size-large wp-image-25242" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 5:</span><span class="fontstyle0" style="color: #000000;"> Força de atrito, carga normal, emissão acústica (AE) e profundidade do arranhão vs. comprimento do arranhão para o protetor de tela de vidro temperado. <span class="fontstyle0">(A) Carga crítica #1 (B) Carga crítica #2</span><br /></span></p>								</div>
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															<img loading="lazy" decoding="async" width="1024" height="380" src="https://nanovea.com/wp-content/uploads/2025/11/tempered-glass-screen-protector-microscopy-critical-load-1-and-2.jpg" class="attachment-large size-large wp-image-25243" alt="Imagens de microscopia óptica mostrando os locais de falha de Carga Crítica #1 e Carga Crítica #2 no protetor de tela de vidro temperado durante o teste de arranhões com ampliação de 5x usando o testador mecânico NANOVEA." />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 6:</span><span class="fontstyle0" style="color: #000000;"> Imagens de microscopia óptica mostrando os locais de falha da Carga Crítica #1 (esquerda) e da Carga Crítica #2 (direita) com ampliação de 5× (largura da imagem: 0,8934 mm).<br /></span></p>								</div>
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															<img loading="lazy" decoding="async" width="1024" height="252" src="https://nanovea.com/wp-content/uploads/2025/11/tempered-glass-screen-protector-post-scratch-test-microscopy-critical-load-1-and-2.jpg" class="attachment-large size-large wp-image-25244" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 7:</span><span class="fontstyle0" style="color: #000000;"> Imagem de microscopia óptica pós-teste da trilha de arranhões de vidro temperado, destacando o início da fratura (CL#1) e a zona de penetração final (CL#2) após o teste de carga progressiva.<br /></span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Conclusão: Comparação do desempenho contra arranhões de protetores de tela de TPU vs. vidro temperado</h2>				</div>
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									<p data-start="414" data-end="843">Este estudo demonstra como o NANOVEA PB1000 Mechanical Tester fornece medições de resistência a arranhões controladas, repetíveis e altamente sensíveis usando carga progressiva e detecção de emissão acústica (AE). Ao capturar com precisão os eventos de falha coesiva e adesiva, o sistema permite uma comparação clara de como os protetores de tela de TPU e de vidro temperado se comportam sob crescente estresse mecânico.</p><p data-start="845" data-end="1188">Os resultados experimentais confirmam que o vidro temperado apresenta cargas críticas significativamente mais altas do que o TPU, proporcionando resistência superior a arranhões, início retardado da fratura e proteção confiável contra a penetração do indentador. A menor resistência coesiva do TPU e a delaminação precoce destacam suas limitações em ambientes de alta tensão.</p><p data-start="845" data-end="1188">Depois de identificar as cargas de falha, os rastros resultantes também podem ser analisados usando um <a href="https://nanovea.com/profilometers/">Perfilômetro óptico 3D sem contato</a> para medir a profundidade da ranhura, a deformação residual e a topografia pós-risco. Isso ajuda a completar o perfil mecânico de cada material.</p><p data-start="1190" data-end="1564">O NANOVEA Mechanical Tester foi projetado para testes precisos e repetíveis de indentação, arranhões e desgaste, e suporta nano e micro módulos em conformidade com as normas ISO e ASTM. Sua versatilidade o torna uma solução ideal para avaliar o perfil mecânico completo de filmes finos, revestimentos, polímeros, vidros e substratos em P&amp;D, produção e controle de qualidade.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Perguntas frequentes <br> Sobre o teste de resistência a arranhões</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">O que é o teste de resistência a arranhões?</h3>				</div>
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									<p data-start="168" data-end="494">O teste de resistência a arranhões avalia como um material ou revestimento responde quando uma ponta de diamante aplica uma carga progressivamente crescente. O teste identifica as cargas críticas em que ocorrem falhas coesivas ou adesivas, fornecendo uma medida quantificável de durabilidade, força de adesão e resistência a danos na superfície.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Qual é a diferença entre falha coesiva e adesiva?</h3>				</div>
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									<p data-start="168" data-end="494">Ocorre uma falha coesiva <em data-start="840" data-end="848">dentro de</em> o revestimento ou o material, como rachaduras, rasgos ou fraturas internas.<br data-start="921" data-end="924" />A falha do adesivo ocorre quando o revestimento se desprende do substrato, indicando uma força de adesão insuficiente.</p><p data-start="168" data-end="494">O NANOVEA PB1000 detecta ambos usando monitoramento de emissão acústica sincronizada, rastreamento de profundidade de arranhões e análise de fricção.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Por que usar um testador mecânico em vez de métodos manuais?</h3>				</div>
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									<p data-start="168" data-end="494">Um testador mecânico como o NANOVEA PB1000 fornece medições precisas, repetíveis e padronizadas, garantindo dados confiáveis para P&amp;D, validação de produção e controle de qualidade. Ele também oferece recursos avançados, como detecção de emissão acústica e monitoramento de profundidade em tempo real, que os métodos manuais não podem oferecer.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Precisa de testes de arranhões confiáveis para seus materiais?</h2>				</div>
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				</div><p>The post <a href="https://nanovea.com/pt/teste-de-resistencia-a-arranhoes-de-protetores-de-tela-de-telefones/">Scratch Resistance Testing of Phone Screen Protectors</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Teste de abrasividade de rochas com o tribômetro NANOVEA</title>
		<link>https://nanovea.com/pt/teste-de-abrasividade-de-rochas/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=rock-abrasivity-testing</link>
					<comments>https://nanovea.com/pt/teste-de-abrasividade-de-rochas/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Quarta, 13 de setembro de 2023 17:07:17 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Rotational Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=23217</guid>

					<description><![CDATA[<p>ROCK TRIBOLOGY: ROCK ABRASIVITY TESTING USING NANOVEA TRIBOMETER Preparado por DUANJIE LI, PhD INTRODUÇÃO As rochas são compostas de grãos de minerais. O tipo e a abundância desses minerais, bem como a força de ligação química entre os grãos minerais, determinam as propriedades mecânicas e tribológicas das rochas. Dependendo dos ciclos geológicos das rochas, elas podem [...]</p>
<p>The post <a href="https://nanovea.com/pt/teste-de-abrasividade-de-rochas/">Rock Abrasivity Testing with NANOVEA Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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									<h1 style="text-align: center; font-style: italic; font-weight: bold;"><span style="font-size: 80px; color: #1b96cf; display: block;">TRIBOLOGIA DE ROCHAS:</span><span style="font-size: 32px; color: #000;">TESTE DE ABRASIVIDADE DE ROCHAS UTILIZANDO O TRIBÔMETRO NANOVEA</span></h1>								</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/09/rock-tribology-NANOVEA.jpg" title="" alt="TRIBOLOGIA DE ROCHAS: Teste de abrasividade de rochas utilizando o tribômetro NANOVEA" loading="lazy" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Preparado por</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">DUANJIE LI, PhD</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
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									As rochas são compostas por grãos de minerais. O tipo e a abundância destes minerais, bem como a força de ligação química entre os grãos minerais, determinam as propriedades mecânicas e tribológicas das rochas. Dependendo dos ciclos geológicos das rochas, as rochas podem sofrer transformações e são normalmente classificadas em três tipos principais: ígneas, sedimentares e metamórficas. Essas rochas apresentam diferentes composições minerais e químicas, permeabilidades e tamanhos de partículas, e tais características contribuem para sua variada resistência ao desgaste. A tribologia das rochas explora os comportamentos de desgaste e fricção das rochas em diversas condições geológicas e ambientais.								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTÂNCIA DOS TESTES DE ABRASIVIDADE DE ROCHAS</h3>				</div>
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									<p>Vários tipos de desgaste contra rochas, incluindo abrasão e fricção, ocorrem durante o processo de perfuração de poços, levando a significativas perdas diretas e consequentes atribuídas ao reparo e substituição de brocas e ferramentas de corte. Portanto, o estudo da perfurabilidade, perfurabilidade, capacidade de corte e abrasividade das rochas é fundamental nas indústrias de petróleo, gás e mineração. A pesquisa em tribologia de rochas desempenha um papel fundamental na seleção das estratégias de perfuração mais eficientes e econômicas, aumentando assim a eficiência geral e contribuindo para a conservação de materiais, energia e meio ambiente. Além disso, minimizar o atrito superficial é altamente vantajoso na redução da interação entre a broca de perfuração e a rocha, resultando na diminuição do desgaste da ferramenta e na melhoria da eficiência de perfuração/corte.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJETIVO DA MEDIÇÃO</h2>				</div>
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									<p>Neste estudo, simulamos e comparamos as propriedades tribológicas de dois tipos de rochas para demonstrar a capacidade do <a href="https://nanovea.com/instruments/t50/">Tribômetro NANOVEA T50</a> na medição do coeficiente de atrito e da taxa de desgaste das rochas de forma controlada e monitorada.</p>								</div>
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									<p style="text-align: center; font-size: 20pt; color: black;">NANOVEA <span style="font-size: 20pt; color: #1b96cf;">T50 Compacto</span><br>Tribômetro de peso livre</p>								</div>
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																<a href="https://nanovea.com/instruments/t50/">
							<img loading="lazy" decoding="async" width="434" height="432" src="https://nanovea.com/wp-content/uploads/2023/06/NANOVEA-T50-Tribometer-for-Wear-Test.jpg" class="elementor-animation-grow attachment-medium_large size-medium_large wp-image-22861" alt="TRIBÔMETRO NANOVEA: Teste de abrasividade de calcário e mármore" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">AS AMOSTRAS</h2>				</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/09/marble-and-limestone-wear-and-friction.jpg" title="" alt="teste de desgaste e atrito de mármore e calcário - tribologia de rochas" loading="lazy" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">PROCEDIMENTO DE TESTE</h2>				</div>
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									<p>O coeficiente de atrito, COF e a resistência ao desgaste de duas amostras de rocha foram avaliados pelo Tribômetro NANOVEA T50 usando o Módulo de Desgaste Pin-on-Disc. Uma bola de Al2O3 (6 mm de diâmetro) foi usada como contra-material. A trilha de desgaste foi examinada usando o perfilômetro sem contato NANOVEA após os testes. Os parâmetros de teste estão resumidos abaixo.</p><p>A taxa de desgaste, K, foi avaliada usando a fórmula K=V/(F×s)=A/(F×n), onde V é o volume desgastado, F é a carga normal, s é a distância de deslizamento, A é a área da seção transversal da trilha de desgaste e n é o número de revoluções. A rugosidade da superfície e os perfis dos rastros de desgaste foram avaliados com o perfilômetro óptico NANOVEA, e a morfologia dos rastros de desgaste foi examinada usando um microscópio óptico.</p><p>Observe que a bola de Al2O3 como contra-material foi usada como exemplo neste estudo. Qualquer material sólido com formatos diferentes pode ser aplicado usando um acessório personalizado para simular a situação real da aplicação.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">PARÂMETROS DE TESTE</h2>				</div>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">AMOSTRAS</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Calcário, Mármore</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">RAIO DO ANEL DE DESGASTE </strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>5 mm</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">FORÇA NORMAL</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>10 N</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DURAÇÃO DO TESTE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>10 minutos</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">SPEED</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>100 rpm</strong></em></td>
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS &amp; DISCUSSÃO</h2>				</div>
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									<p>A dureza (H) e o módulo de elasticidade (E) das amostras de calcário e mármore são comparados na FIGURA 1, utilizando o módulo Micro Indentation do NANOVEA Mechanical Tester. A amostra de calcário apresentou valores mais baixos de H e E, medindo 0,53 e 25,9 GPa, respectivamente, em contraste com o mármore, que registrou valores de 1,07 para H e 49,6 GPa para E. A variabilidade relativamente maior nos valores de H e E observados no A amostra de calcário pode ser atribuída à sua maior heterogeneidade superficial, decorrente de suas características granuladas e porosas.</p><p>A evolução do COF durante os testes de desgaste das duas amostras de rocha está representada na FIGURA 2. O calcário inicialmente experimenta um rápido aumento no COF para aproximadamente 0,8 no início do teste de desgaste, mantendo este valor durante toda a duração do teste. Esta mudança abrupta no COF pode ser atribuída à penetração da bola de Al2O3 na amostra de rocha, resultante de um rápido desgaste e processo de rugosidade que ocorre na face de contato dentro da trilha de desgaste. Em contraste, a amostra de mármore apresenta um aumento notável no COF para valores mais elevados após aproximadamente 5 metros de distância de deslizamento, significando a sua resistência ao desgaste superior quando comparada com o calcário.</p>								</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/09/rock-hardness-test-NANOVEA.jpg" title="" alt="Teste de dureza da rocha" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 1:</span><span class="fontstyle0" style="color: #000000;"> Comparação entre a dureza e o módulo de Young de amostras de calcário e mármore.</span></p>								</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/09/Coefficient-of-Friction-Marble-and-Limestone.jpg" title="" alt="Evolução do coeficiente de atrito (COF) em amostras de calcário e mármore durante testes de desgaste" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Evolução do Coeficiente de Atrito (COF) em amostras de calcário e mármore durante ensaios de desgaste.</span></p>								</div>
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									A FIGURA 3 compara perfis transversais das amostras de calcário e mármore após os testes de desgaste, e a Tabela 1 resume os resultados da análise dos traços de desgaste. A FIGURA 4 mostra as marcas de desgaste das amostras ao microscópio óptico. A avaliação da trilha de desgaste está alinhada com a observação da evolução do COF: a amostra de mármore, que mantém um COF baixo por um período mais longo, apresenta uma taxa de desgaste menor de 0,0046 mm³/N m, em comparação com 0,0353 mm³/N m para o calcário. As propriedades mecânicas superiores do mármore contribuem para a sua melhor resistência ao desgaste do que o calcário.								</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/09/rock-wear-tester.jpg" title="" alt="TESTE DE ABRASIVIDADE DE ROCHAS UTILIZANDO O TRIBÔMETRO NANOVEA" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Perfis transversais das trilhas de desgaste.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="1077" height="200" src="https://nanovea.com/wp-content/uploads/2023/09/rock-tribology-testing-using-NANOVEA-Tribometer.jpg" class="attachment-full size-full wp-image-24670" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 1:</span><span class="fontstyle0" style="color: #000000;"> Resumo dos resultados da análise do rastro de desgaste.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="876" height="419" src="https://nanovea.com/wp-content/uploads/2023/09/limestone-and-marble-tribometer-testing.jpg" class="attachment-large size-large wp-image-24671" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 4:</span><span class="fontstyle0" style="color: #000000;"> Desgaste de trilhos sob microscópio ótico.</span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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									<p>Neste estudo, demonstramos a capacidade do Tribômetro NANOVEA em avaliar o coeficiente de atrito e resistência ao desgaste de duas amostras de rocha, nomeadamente mármore e calcário, de forma controlada e monitorada. As propriedades mecânicas superiores do mármore contribuem para a sua excepcional resistência ao desgaste. Esta propriedade torna difícil perfurar ou cortar na indústria de petróleo e gás. Por outro lado, prolonga significativamente a sua vida útil quando utilizado como material de construção de alta qualidade, como ladrilhos.</p><p>Os tribometros NANOVEA oferecem recursos de teste de desgaste e fricção precisos e repetíveis, aderindo aos padrões ISO e ASTM nos modos rotativo e linear. Além disso, ele fornece módulos opcionais para desgaste em alta temperatura, lubrificação e tribocorrosão, todos perfeitamente integrados em um sistema. A linha incomparável da NANOVEA é uma solução ideal para determinar toda a gama de propriedades tribológicas de revestimentos finos ou espessos, macios ou duros, filmes, substratos e tribologia de rochas.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/pt/teste-de-abrasividade-de-rochas/">Rock Abrasivity Testing with NANOVEA Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<item>
		<title>Análise de Superfície com Shot Peened</title>
		<link>https://nanovea.com/pt/analise-de-superficie-jateada-2/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=shot-peened-surface-analysis</link>
					<comments>https://nanovea.com/pt/analise-de-superficie-jateada-2/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Quarta, 16 de agosto de 2023 14:19:21 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Profilometry | Roughness and Finish]]></category>
		<category><![CDATA[Profilometry | Texture and Grain]]></category>
		<category><![CDATA[Profilometry Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=23106</guid>

					<description><![CDATA[<p>ANÁLISE DE SUPERFÍCIE DE SHOT PEENED UTILIZANDO PROFILÔMETRO 3D SEM CONTATO Preparado por CRAIG LEISING INTRODUÇÃO O shot peening é um processo no qual um substrato é bombardeado com esferas esféricas de metal, vidro ou cerâmica - comumente chamadas de “shot” - com uma força destinada a induzir a plasticidade na superfície. A análise das características antes e depois do peening fornece percepções cruciais para [...]</p>
<p>The post <a href="https://nanovea.com/pt/analise-de-superficie-jateada-2/">Shot Peened Surface Analysis</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="23106" class="elementor elementor-23106" data-elementor-post-type="post">
						<section class="elementor-section elementor-top-section elementor-element elementor-element-5265bd8 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="5265bd8" data-element_type="section">
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				<div class="elementor-widget-container">
					<h1 class="elementor-heading-title elementor-size-default">ANÁLISE DE SUPERFÍCIE SHOT PEENED</h1>				</div>
				</div>
				<div class="elementor-element elementor-element-2900d80 elementor-widget elementor-widget-heading" data-id="2900d80" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">USANDO PROFILÔMETRO 3D SEM CONTATO</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-4252e2c elementor-widget elementor-widget-image" data-id="4252e2c" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="768" height="225" src="https://nanovea.com/wp-content/uploads/2023/08/Shot-Peening-Surface-Measurement.jpg" class="attachment-medium_large size-medium_large wp-image-23115" alt="" />															</div>
				</div>
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				<div class="elementor-widget-container">
					<p class="elementor-heading-title elementor-size-default">Preparado por</p>				</div>
				</div>
				<div class="elementor-element elementor-element-e4b46ff elementor-widget elementor-widget-heading" data-id="e4b46ff" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<p class="elementor-heading-title elementor-size-default">CRAIG LEISING</p>				</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-a4074c1 elementor-section-content-middle elementor-reverse-mobile elementor-reverse-tablet elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="a4074c1" data-element_type="section" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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		</div>
				<div class="elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-79590a6" data-id="79590a6" data-element_type="column" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-80916b3 elementor-widget elementor-widget-text-editor" data-id="80916b3" data-element_type="widget" data-widget_type="text-editor.default">
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									<p>O shot peening é um processo no qual um substrato é bombardeado com esferas esféricas de metal, vidro ou cerâmica - comumente chamadas de &quot;shot&quot; - com uma força destinada a induzir plasticidade na superfície. Analisar as características antes e depois do peening fornece informações cruciais para melhorar a compreensão e o controle do processo. A rugosidade da superfície e a área de cobertura das ondulações deixadas pelo disparo são aspectos de interesse especialmente notáveis.</p>								</div>
				</div>
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				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">Importância do perfilômetro 3D sem contato para análise de superfície com shot peened</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-e3c6503 elementor-widget elementor-widget-text-editor" data-id="e3c6503" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p>Ao contrário dos perfilômetros de contato tradicionais, que têm sido tradicionalmente usados para análise de superfícies shotpeened, a medição 3D sem contato fornece uma imagem 3D completa para oferecer uma compreensão mais abrangente da área de cobertura e da topografia da superfície. Sem capacidades 3D, uma inspeção dependerá apenas de informações 2D, que são insuficientes para caracterizar uma superfície. Compreender a topografia, a área de cobertura e a rugosidade em 3D é a melhor abordagem para controlar ou melhorar o processo de peening. NANOVEA <a href="https://nanovea.com/profilometers/">Perfilômetros 3D sem contato</a> utilizam a tecnologia Chromatic Light com uma capacidade única de medir ângulos acentuados encontrados em superfícies usinadas e marteladas. Além disso, quando outras técnicas falham em fornecer dados confiáveis devido ao contato da sonda, variação da superfície, ângulo ou refletividade, os perfilômetros NANOVEA são bem-sucedidos.</p>								</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-1076c06 elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="1076c06" data-element_type="section">
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				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">OBJETIVO DA MEDIÇÃO</h2>				</div>
				</div>
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									<p>Nesta aplicação, o perfilômetro sem contato NANOVEA ST400 é usado para medir a matéria-prima e duas superfícies perfuradas de forma diferente para uma análise comparativa. Existe uma lista interminável de parâmetros de superfície que podem ser calculados automaticamente após a digitalização da superfície 3D. Aqui, revisaremos a superfície 3D e selecionaremos as áreas de interesse para análise posterior, incluindo a quantificação e investigação da rugosidade, reentrâncias e área da superfície.</p>								</div>
				</div>
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									<p style="text-align: center; font-size: 20pt; color: black;">NANOVEA <span style="font-size: 20pt; color: #1b96cf;">Padrão ST400</span><br />Profilômetro óptico 3D</p>								</div>
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				<div class="elementor-widget-container">
																<a href="https://nanovea.com/instruments/st500">
							<img loading="lazy" decoding="async" width="768" height="512" src="https://nanovea.com/wp-content/uploads/2020/12/Nanovea-Optical-Profilometry-ST500.png" class="elementor-animation-grow attachment-medium_large size-medium_large wp-image-9557" alt="Profilômetro 3D NANOVEA ST500" />								</a>
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		</section>
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					<h2 class="elementor-heading-title elementor-size-default">A AMOSTRA</h2>				</div>
				</div>
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															<img loading="lazy" decoding="async" width="601" height="354" src="https://nanovea.com/wp-content/uploads/2023/08/Shot-Peened-Surfaces-ISO-25178.jpg" class="attachment-large size-large wp-image-23113" alt="Teste de superfície Shot Peened" />															</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-5d8cb0e elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="5d8cb0e" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">SUPERFÍCIE DE AÇO</h3>				</div>
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				<section class="elementor-section elementor-inner-section elementor-element elementor-element-d9572f3 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="d9572f3" data-element_type="section">
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															<img loading="lazy" decoding="async" width="459" height="381" src="https://nanovea.com/wp-content/uploads/2023/08/Steel-Surface-ISO-25178-Roughness.jpg" class="attachment-large size-large wp-image-23116" alt="Rugosidade da superfície jateada" />															</div>
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															<img loading="lazy" decoding="async" width="454" height="385" src="https://nanovea.com/wp-content/uploads/2023/08/Steel-Surface-ISO25178-Roughness-Analysis.jpg" class="attachment-large size-large wp-image-23117" alt="Caracterização de superfícies Shot Peened" />															</div>
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				<section class="elementor-section elementor-inner-section elementor-element elementor-element-8bf02be elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="8bf02be" data-element_type="section">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">ISO 25178</span><span class="fontstyle0" style="color: #000000;"> PARÂMETROS DE RUGOSIDADE 3D</span></p>								</div>
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<tr>
<td>SA</td>
<td>0,399 μm</td>
<td>Rugosidade Média</td>
</tr>
<tr>
<td>Sq</td>
<td>0,516 μm</td>
<td>Rugosidade RMS</td>
</tr>
<tr>
<td>Sz</td>
<td>5,686 μm</td>
<td>Pico a Vale Máximo</td>
</tr>
<tr>
<td>Sp</td>
<td>2,976 μm</td>
<td>Altura máxima de pico</td>
</tr>
<tr>
<td>Sv</td>
<td>2,711 μm</td>
<td>Profundidade Máxima do Poço</td>
</tr>
<tr>
<td>SKU</td>
<td>3.9344</td>
<td>Curtose</td>
</tr>
<tr>
<td>Ssk</td>
<td>-0.0113</td>
<td>Skewness</td>
</tr>
<tr>
<td>Sal</td>
<td>0,0028 mm</td>
<td>Comprimento da autocorrelação</td>
</tr>
<tr>
<td>Str</td>
<td>0.0613</td>
<td>Taxa de Aspecto da Textura</td>
</tr>
<tr>
<td>Sdar</td>
<td>26,539 mm²</td>
<td>Área de Superfície</td>
</tr>
<tr>
<td>Svk</td>
<td>0,589 μm</td>
<td>Profundidade Reduzida do Vale</td>
</tr>
</tbody>
</table>
&nbsp;								</div>
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		</div>
					</div>
		</section>
					</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-3343ac4 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="3343ac4" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS</h2>				</div>
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				<div class="elementor-element elementor-element-6794e46 elementor-widget elementor-widget-heading" data-id="6794e46" data-element_type="widget" data-widget_type="heading.default">
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					<h3 class="elementor-heading-title elementor-size-default">SUPERFÍCIE PEENADA 1</h3>				</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-2acba06 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="2acba06" data-element_type="section">
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															<img loading="lazy" decoding="async" width="440" height="377" src="https://nanovea.com/wp-content/uploads/2023/08/Peened-Surface-ISO-25178-Roughness.jpg" class="attachment-large size-large wp-image-23118" alt="Perfil de superfície Shot Peened" />															</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-ea285df" data-id="ea285df" data-element_type="column">
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															<img loading="lazy" decoding="async" width="380" height="386" src="https://nanovea.com/wp-content/uploads/2023/08/Shot-Peened-Surface-ISO25178-Roughness.jpg" class="attachment-large size-large wp-image-23108" alt="Profilometria de superfície Shot Peened" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-1f3a816 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="1f3a816" data-element_type="section">
						<div class="elementor-container elementor-column-gap-narrow">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a64869f" data-id="a64869f" data-element_type="column">
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						<div class="elementor-element elementor-element-9afb6dd elementor-widget elementor-widget-text-editor" data-id="9afb6dd" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">COBERTURA DE SUPERFÍCIE </span><span class="fontstyle0" style="color: #000000;">98.105%</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-29bfe40 elementor-widget elementor-widget-image" data-id="29bfe40" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="445" height="370" src="https://nanovea.com/wp-content/uploads/2023/08/Shot-Peening-ISO25178-Roughness.jpg" class="attachment-large size-large wp-image-23114" alt="Estudo de superfície Shot Peened" />															</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-01aa9d3" data-id="01aa9d3" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-278511c elementor-widget elementor-widget-text-editor" data-id="278511c" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">ISO 25178</span><span class="fontstyle0" style="color: #000000;"> PARÂMETROS DE RUGOSIDADE 3D</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-749588a elementor-widget__width-initial elementor-widget elementor-widget-text-editor" data-id="749588a" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
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<html>
<head>
    <style>
        table {
            border-collapse: collapse;
            width: 100%;
        }

        th, td {
            border: 1px solid black;
            padding: 8px;
            text-align: left;
        }

        th {
            background-color: #f2f2f2;
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        td:nth-child(3) {
            color: #1B96CF;
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<body>

<table>
    <tr>
        <td>Sa</td>
        <td>4,102 μm</td>
        <td>Rugosidade Média</td>
    </tr>
    <tr>
        <td>Sq</td>
        <td>5,153 μm</td>
        <td>Rugosidade RMS</td>
    </tr>
    <tr>
        <td>Sz</td>
        <td>44,975 μm</td>
        <td>Pico a Vale Máximo</td>
    </tr>
    <tr>
        <td>Sp</td>
        <td>24,332 μm</td>
        <td>Altura máxima de pico</td>
    </tr>
    <tr>
        <td>Sv</td>
        <td>20,644 μm</td>
        <td>Profundidade Máxima do Poço</td>
    </tr>
    <tr>
        <td>SKU</td>
        <td>3.0187</td>
        <td>Curtose</td>
    </tr>
    <tr>
        <td>Ssk</td>
        <td>0.0625</td>
        <td>Skewness</td>
    </tr>
    <tr>
        <td>Sal</td>
        <td>0,0976 milímetros</td>
        <td>Comprimento da autocorrelação</td>
    </tr>
    <tr>
        <td>Str</td>
        <td>0.9278</td>
        <td>Taxa de Aspecto da Textura</td>
    </tr>
    <tr>
        <td>Sdar</td>
        <td>29,451 mm²</td>
        <td>Área de Superfície</td>
    </tr>
    <tr>
        <td>Svk</td>
        <td>5,008 μm</td>
        <td>Profundidade Reduzida do Vale</td>
    </tr>
</table>

</body>
</html>
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		</div>
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		</section>
					</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-8cbc24c elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="8cbc24c" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-474414a elementor-widget elementor-widget-heading" data-id="474414a" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">SUPERFÍCIE PEENADA 2</h3>				</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-b93c817 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="b93c817" data-element_type="section">
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				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="434" height="378" src="https://nanovea.com/wp-content/uploads/2023/08/Shot-Peened-ISO-25178-Analysis.jpg" class="attachment-large size-large wp-image-23120" alt="Teste de superfície Shot Peened" />															</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-0a23c59" data-id="0a23c59" data-element_type="column">
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															<img loading="lazy" decoding="async" width="423" height="385" src="https://nanovea.com/wp-content/uploads/2023/08/Shot-Peened-Surface-Roughness.jpg" class="attachment-large size-large wp-image-23112" alt="Análise da superfície jateada" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-9905c5a elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="9905c5a" data-element_type="section">
						<div class="elementor-container elementor-column-gap-narrow">
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			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-72c2bcc elementor-widget elementor-widget-text-editor" data-id="72c2bcc" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">COBERTURA DE SUPERFÍCIE</span>
<span class="fontstyle0" style="color: #000000;"> 97.366%</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-2c564ba elementor-widget elementor-widget-image" data-id="2c564ba" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="422" height="373" src="https://nanovea.com/wp-content/uploads/2023/08/Shot-Peened-Roughness.jpg" class="attachment-large size-large wp-image-23121" alt="Metrologia de superfícies jateadas" />															</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-671ee07" data-id="671ee07" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-7de2ae6 elementor-widget elementor-widget-text-editor" data-id="7de2ae6" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">ISO 25178</span><span class="fontstyle0" style="color: #000000;"> PARÂMETROS DE RUGOSIDADE 3D</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-8ce3112 elementor-widget__width-initial elementor-widget elementor-widget-text-editor" data-id="8ce3112" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<!DOCTYPE html>
<html>
<head>
    <style>
        table {
            border-collapse: collapse;
            width: 100%;
        }

        td {
            border: 1px solid black;
            padding: 8px;
            text-align: left;
        }

        td:nth-child(3) {
            color: #1B96CF;
            font-weight: bold;
            font-style: italic;
        }

        /* Apply bold and italic style to table rows */
        tr {
            font-weight: bold;
            font-style: italic;
        }
    </style>
</head>
<body>

<table>
    <tr>
        <td>Sa</td>
        <td>4,330 μm</td>
        <td>Rugosidade Média</td>
    </tr>
    <tr>
        <td>Sq</td>
        <td>5,455 μm</td>
        <td>Rugosidade RMS</td>
    </tr>
    <tr>
        <td>Sz</td>
        <td>54,013 μm</td>
        <td>Pico a Vale Máximo</td>
    </tr>
    <tr>
        <td>Sp</td>
        <td>25,908 μm</td>
        <td>Altura máxima de pico</td>
    </tr>
    <tr>
        <td>Sv</td>
        <td>28,105 μm</td>
        <td>Profundidade Máxima do Poço</td>
    </tr>
    <tr>
        <td>SKU</td>
        <td>3.0642</td>
        <td>Curtose</td>
    </tr>
    <tr>
        <td>Ssk</td>
        <td>0.1108</td>
        <td>Skewness</td>
    </tr>
    <tr>
        <td>Sal</td>
        <td>0,1034 mm</td>
        <td>Comprimento da autocorrelação</td>
    </tr>
    <tr>
        <td>Str</td>
        <td>0.9733</td>
        <td>Taxa de Aspecto da Textura</td>
    </tr>
    <tr>
        <td>Sdar</td>
        <td>29,623 mm²</td>
        <td>Área de Superfície</td>
    </tr>
    <tr>
        <td>Svk</td>
        <td>5,167 μm</td>
        <td>Profundidade Reduzida do Vale</td>
    </tr>
</table>
</body>
</html>
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				</div>
					</div>
		</div>
					</div>
		</section>
					</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-ab6ead9 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="ab6ead9" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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									<div class="group w-full text-token-text-primary border-b border-black/10 dark:border-gray-900/50 bg-gray-50 dark:bg-[#444654]"><div class="flex p-4 gap-4 text-base md:gap-6 md:max-w-2xl lg:max-w-[38rem] xl:max-w-3xl md:py-6 lg:px-0 m-auto"><div class="relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]"><div class="flex flex-grow flex-col gap-3"><div class="min-h-[20px] flex flex-col items-start gap-3 overflow-x-auto whitespace-pre-wrap break-words"><div class="markdown prose w-full break-words dark:prose-invert light"><p>Neste aplicativo de análise de superfície perfurada, demonstramos como o NANOVEA ST400 3D Non-Contact Profiler caracteriza com precisão a topografia e os detalhes nanométricos de uma superfície perfurada. É evidente que tanto a Superfície 1 quanto a Superfície 2 têm um impacto significativo em todos os parâmetros aqui relatados quando comparados à matéria-prima. Um simples exame visual das imagens revela as diferenças entre as superfícies. Isso é confirmado observando a área de cobertura e os parâmetros listados. Em comparação com a Superfície 2, a Superfície 1 apresenta uma rugosidade média menor (Sa), mossas mais rasas (Sv) e área superficial reduzida (Sdar), mas uma área de cobertura ligeiramente maior.</p><p>A partir dessas medições de superfície 3D, as áreas de interesse podem ser prontamente identificadas e submetidas a uma ampla gama de medições, incluindo rugosidade, acabamento, textura, forma, topografia, nivelamento, empenamento, planaridade, volume, altura do degrau e outros. Uma seção transversal 2D pode ser rapidamente escolhida para uma análise detalhada. Esta informação permite uma investigação abrangente de superfícies marteladas, utilizando uma gama completa de recursos de medição de superfície. Áreas específicas de interesse podem ser examinadas com um módulo AFM integrado. Os perfilômetros 3D NANOVEA oferecem velocidades de até 200 mm/s. Eles podem ser personalizados em termos de tamanho, velocidade, recursos de digitalização e podem até mesmo atender aos padrões de Sala Limpa Classe 1. Opções como Indexing Conveyor e integração para uso Inline ou Online também estão disponíveis.</p></div></div></div></div></div></div>								</div>
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									<p><span class="fontstyle0">Um agradecimento especial ao Sr. Hayden, da IMF, por fornecer a amostra mostrada nesta nota. Industrial Metal Finishing Inc. | indmetfin.com</span></p>								</div>
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				</div><p>The post <a href="https://nanovea.com/pt/analise-de-superficie-jateada-2/">Shot Peened Surface Analysis</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Morfologia da superfície da tinta</title>
		<link>https://nanovea.com/pt/morfologia-da-superficie-da-tinta/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=paint-surface-morphology</link>
					<comments>https://nanovea.com/pt/morfologia-da-superficie-da-tinta/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Sex, 04 de agosto de 2023 16:44:00 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Profilometry | Roughness and Finish]]></category>
		<category><![CDATA[Profilometry | Texture and Grain]]></category>
		<category><![CDATA[Profilometry Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=23049</guid>

					<description><![CDATA[<p>MORFOLOGIA DA SUPERFÍCIE DA TINTA MONITORAMENTO AUTOMATIZADO DA EVOLUÇÃO EM TEMPO REAL UTILIZANDO O PROFILOMETRO 3D NANOVEA Preparado por DUANJIE LI, PhD INTRODUÇÃO As propriedades protetoras e decorativas da tinta desempenham um papel importante em vários setores, incluindo o automotivo, marítimo, militar e de construção. Para obter as propriedades desejadas, como resistência à corrosão, proteção UV e resistência à abrasão, as fórmulas e arquiteturas das tintas são [...]</p>
<p>The post <a href="https://nanovea.com/pt/morfologia-da-superficie-da-tinta/">Paint Surface Morphology</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="23049" class="elementor elementor-23049" data-elementor-post-type="post">
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					<h1 class="elementor-heading-title elementor-size-default">MORFOLOGIA DA SUPERFÍCIE DA PINTURA</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">MONITORAMENTO AUTOMATIZADO DA EVOLUÇÃO EM TEMPO REAL<br>USANDO O PERFILÔMETRO NANOVEA 3D</h2>				</div>
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															<img loading="lazy" decoding="async" width="768" height="225" src="https://nanovea.com/wp-content/uploads/2023/08/Drying-Paint-Analysis-Study.jpg" class="attachment-medium_large size-medium_large wp-image-23058" alt="Morfologia da superfície da tinta" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Preparado por</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">DUANJIE LI, PhD</p>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
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									<p>As propriedades protetoras e decorativas da tinta desempenham um papel significativo em uma variedade de indústrias, incluindo automotiva, naval, militar e de construção. Para obter as propriedades desejadas, como resistência à corrosão, proteção UV e resistência à abrasão, as fórmulas e arquiteturas de tintas são cuidadosamente analisadas, modificadas e otimizadas.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTÂNCIA DO PERFILÔMETRO 3D SEM CONTATO PARA ANÁLISE DE MORFOLOGIA DE SUPERFÍCIE DE TINTA DE SECAGEM</h3>				</div>
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									<p>A tinta geralmente é aplicada na forma líquida e passa por um processo de secagem, que envolve a evaporação de solventes e a transformação da tinta líquida em um filme sólido. Durante o processo de secagem, a superfície pintada muda progressivamente de forma e textura. Diferentes acabamentos de superfície e texturas podem ser desenvolvidos usando aditivos para modificar a tensão superficial e as propriedades de fluxo da tinta. No entanto, em casos de receita de tinta mal formulada ou tratamento de superfície inadequado, podem ocorrer falhas indesejadas na superfície da tinta.</p>
<p>O monitoramento in situ preciso da morfologia da superfície da tinta durante o período de secagem pode fornecer informações diretas sobre o mecanismo de secagem. Além disso, a evolução em tempo real das morfologias da superfície é uma informação muito útil em diversas aplicações, como a impressão 3D. A NANOVEA <a href="https://nanovea.com/profilometers/">Perfilômetros 3D sem contato</a> medir a morfologia da superfície da tinta dos materiais sem tocar na amostra, evitando qualquer alteração de forma que possa ser causada por tecnologias de contato, como uma caneta deslizante.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJETIVO DA MEDIÇÃO</h2>				</div>
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									<p>Nesta aplicação, o perfilômetro sem contato NANOVEA ST500, equipado com um sensor óptico de linha de alta velocidade, é usado para monitorar a morfologia da superfície da tinta durante seu período de secagem de 1 hora. Mostramos a capacidade do perfilômetro sem contato NANOVEA em fornecer medição de perfil 3D automatizada em tempo real de materiais com mudança de forma contínua.</p>								</div>
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									<p style="text-align: center; font-size: 20pt; color: black;">
  NANOVEA <span style="font-size: 20pt; color: #1b96cf;">ST500 Área Grande</span><br>
  Profilômetro óptico 3D
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																<a href="https://nanovea.com/instruments/st500">
							<img loading="lazy" decoding="async" width="768" height="512" src="https://nanovea.com/wp-content/uploads/2020/12/Nanovea-Optical-Profilometry-ST500.png" class="elementor-animation-grow attachment-medium_large size-medium_large wp-image-9557" alt="Profilômetro 3D NANOVEA ST500" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS &amp; DISCUSSÃO</h2>				</div>
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									<p>A tinta foi aplicada na superfície de uma folha de metal, seguida imediatamente por medições automatizadas da evolução da morfologia da tinta de secagem in situ usando o NANOVEA ST500 Non-Contact Profilometer equipado com um sensor de linha de alta velocidade. Uma macro foi programada para medir e registrar automaticamente a morfologia da superfície 3D em intervalos de tempo específicos: 0, 5, 10, 20, 30, 40, 50 e 60 min. Este procedimento de verificação automatizado permite que os usuários executem tarefas de verificação automaticamente, executando procedimentos definidos em sequência, reduzindo significativamente o esforço, o tempo e os possíveis erros do usuário em comparação com o teste manual ou verificações repetidas. Essa automação prova ser extremamente útil para medições de longo prazo envolvendo várias varreduras em diferentes intervalos de tempo.</p><p>O sensor de linha óptica gera uma linha brilhante composta por 192 pontos, conforme mostrado na FIGURA 1. Esses 192 pontos de luz varrem a superfície da amostra simultaneamente, aumentando significativamente a velocidade de varredura. Isso garante que cada escaneamento 3D seja concluído rapidamente para evitar mudanças substanciais na superfície durante cada escaneamento individual.</p>								</div>
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															<img loading="lazy" decoding="async" width="664" height="426" src="https://nanovea.com/wp-content/uploads/2023/08/Paint-Coating-Analysis.jpg" class="attachment-large size-large wp-image-23062" alt="Análise de revestimento de tinta usando o perfilômetro 3D" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 1:</span><span class="fontstyle0" style="color: #000000;"> Sensor óptico de linha escaneando a superfície da tinta que está secando.</span></p>								</div>
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									<p>A visualização em cores falsas, a visualização 3D e o perfil 2D da topografia da tinta de secagem em tempos representativos são mostrados na FIGURA 2, FIGURA 3 e FIGURA 4, respectivamente. A cor falsa nas imagens facilita a detecção de características que não são facilmente discerníveis. Diferentes cores representam variações de altura em diferentes áreas da superfície da amostra. A visualização 3D fornece uma ferramenta ideal para os usuários observarem a superfície pintada de diferentes ângulos. Durante os primeiros 30 minutos do teste, as cores falsas na superfície da tinta mudam gradualmente de tons mais quentes para tons mais frios, indicando uma diminuição progressiva da altura ao longo do tempo neste período. Esse processo fica mais lento, como mostra a leve mudança de cor ao comparar a tinta em 30 e 60 minutos.</p><p>Os valores médios da altura da amostra e da rugosidade Sa em função do tempo de secagem da tinta estão representados na FIGURA 5. A análise completa da rugosidade da tinta após 0, 30 e 60 minutos de secagem está listada na TABELA 1. Pode-se observar que a altura média da superfície da tinta diminui rapidamente de 471 para 329 µm nos primeiros 30 minutos de tempo de secagem. A textura da superfície se desenvolve ao mesmo tempo que o solvente vaporiza, levando a um aumento do valor de rugosidade Sa de 7,19 para 22,6 µm. O processo de secagem da tinta desacelera a partir daí, resultando em uma diminuição gradual da altura da amostra e do valor de Sa para 317 µm e 19,6 µm, respectivamente, em 60 min.</p><p>Este estudo destaca os recursos do perfilômetro sem contato 3D NANOVEA no monitoramento das alterações da superfície 3D da tinta que está secando em tempo real, fornecendo informações valiosas sobre o processo de secagem da tinta. Ao medir a morfologia da superfície sem tocar na amostra, o perfilômetro evita a introdução de alterações de forma na tinta não seca, o que pode ocorrer com tecnologias de contato como a caneta deslizante. Essa abordagem sem contato garante uma análise precisa e confiável da morfologia da superfície da tinta de secagem.</p>								</div>
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															<img loading="lazy" decoding="async" width="768" height="325" src="https://nanovea.com/wp-content/uploads/2023/08/Paint-Coating-Morphology.jpg" class="attachment-medium_large size-medium_large wp-image-23064" alt="Morfologia da superfície da tinta" />															</div>
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															<img loading="lazy" decoding="async" width="768" height="325" src="https://nanovea.com/wp-content/uploads/2023/08/Drying-Paint-Surface-Morphology.jpg" class="attachment-medium_large size-medium_large wp-image-23060" alt="Morfologia do revestimento de tinta" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Evolução da morfologia da superfície da tinta de secagem em diferentes tempos.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="617" height="461" src="https://nanovea.com/wp-content/uploads/2023/08/Drying-Paint-Coating-Measurement.jpg" class="attachment-medium_large size-medium_large wp-image-23059" alt="Caracterização da superfície da tinta" />															</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/08/Drying-Paint-Surface-QC.jpg" title="" alt="Perfil da superfície da tinta" loading="lazy" />															</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/08/Drying-Paint-Surface-Profilometry.jpg" title="" alt="Análise da superfície da tinta" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Visualização 3D da evolução da superfície da tinta em diferentes tempos de secagem.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="703" height="559" src="https://nanovea.com/wp-content/uploads/2023/08/Paint-Coating-Measurement.jpg" class="attachment-medium_large size-medium_large wp-image-23063" alt="Profilometria da superfície da tinta" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 4:</span><span class="fontstyle0" style="color: #000000;"> Perfil 2D na amostra de tinta após diferentes tempos de secagem.</span></p>								</div>
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				<section class="elementor-section elementor-inner-section elementor-element elementor-element-8ec42f4 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="8ec42f4" data-element_type="section">
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															<img loading="lazy" decoding="async" width="737" height="557" src="https://nanovea.com/wp-content/uploads/2023/08/Paint-Morphology-Evolution.jpg" class="attachment-medium_large size-medium_large wp-image-23071" alt="Estudo da superfície da tinta" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 5:</span><span class="fontstyle0" style="color: #000000;"> Evolução da altura média da amostra e valor de rugosidade Sa em função do tempo de secagem da tinta.</span></p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">ISO 25178 - Parâmetros de textura de superfície</h3>				</div>
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									<table class="alignright" style="width: 100%;">
<tbody>
<tr>
<td><em><b>Tempo de secagem (min)</b></em></td>
<td><em><b>0</b></em></td>
<td><em><b>5</b></em></td>
<td><em><b>10</b></em></td>
<td><em><b>20</b></em></td>
<td><em><b>30</b></em></td>
<td><em><b>40</b></em></td>
<td><em><b>50</b></em></td>
<td><em><b>60</b></em></td>
</tr>
<tr>
<td><em><b>quadrados (µm)</b></em></td>
<td>7.91</td>
<td>9.4</td>
<td>10.8</td>
<td>20.9</td>
<td>22.6</td>
<td>20.6</td>
<td>19.9</td>
<td>19.6</td>
</tr>
<tr>
<td><em><b>SKU</b></em></td>
<td>26.3</td>
<td>19.8</td>
<td>14.6</td>
<td>11.9</td>
<td>10.5</td>
<td>9.87</td>
<td>9.83</td>
<td>9.82</td>
</tr>
<tr>
<td><em><b>Sp (µm)</b></em></td>
<td>97.4</td>
<td>105</td>
<td>108</td>
<td>116</td>
<td>125</td>
<td>118</td>
<td>114</td>
<td>112</td>
</tr>
<tr>
<td><em><b>Sv (µm)</b></em></td>
<td>127</td>
<td>70.2</td>
<td>116</td>
<td>164</td>
<td>168</td>
<td>138</td>
<td>130</td>
<td>128</td>
</tr>
<tr>
<td><em><b>Sz (µm)</b></em></td>
<td>224</td>
<td>175</td>
<td>224</td>
<td>280</td>
<td>294</td>
<td>256</td>
<td>244</td>
<td>241</td>
</tr>
<tr>
<td><em><b>Sa (µm)</b></em></td>
<td>4.4</td>
<td>5.44</td>
<td>6.42</td>
<td>12.2</td>
<td>13.3</td>
<td>12.2</td>
<td>11.9</td>
<td>11.8</td>
</tr>
</tbody>
</table>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">quadrado –</span><span class="fontstyle0" style="color: #000000;"> Altura da raiz quadrada média </span><span class="fontstyle0" style="color: #1b96cf;"> | sku-</span><span class="fontstyle0" style="color: #000000;"> Curtose </span><span class="fontstyle0" style="color: #1b96cf;"> | Sp-</span><span class="fontstyle0" style="color: #000000;"> Altura máxima do pico</span><span class="fontstyle0" style="color: #1b96cf;"> | Sv-</span><span class="fontstyle0" style="color: #000000;"> Altura máxima do poço</span><span class="fontstyle0" style="color: #1b96cf;"> | Sz –</span><span class="fontstyle0" style="color: #000000;"> Altura máxima</span><span class="fontstyle0" style="color: #1b96cf;"> | Sv-</span><span class="fontstyle0" style="color: #000000;"> Altura média aritmética</span></p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 1:</span><span class="fontstyle0" style="color: #000000;"> <span class="fontstyle0">Rugosidade da pintura em diferentes tempos de secagem.</span> <br /></span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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<div class="markdown prose w-full break-words dark:prose-invert light">
<p>Nesta aplicação, mostramos os recursos do perfilômetro sem contato 3D NANOVEA ST500 no monitoramento da evolução da morfologia da superfície da tinta durante o processo de secagem. O sensor óptico de linha de alta velocidade, gerando uma linha com 192 pontos de luz que examinam a superfície da amostra simultaneamente, tornou o estudo eficiente em termos de tempo, garantindo uma precisão incomparável.</p>
<p>A função macro do software de aquisição permite a programação de medições automatizadas da morfologia da superfície 3D in situ, tornando-o particularmente útil para medições de longo prazo envolvendo várias varreduras em intervalos de tempo específicos. Reduz significativamente o tempo, o esforço e o potencial de erros do usuário. As mudanças progressivas na morfologia da superfície são continuamente monitoradas e registradas em tempo real à medida que a tinta seca, fornecendo informações valiosas sobre o mecanismo de secagem da tinta.</p>
<p>Os dados mostrados aqui representam apenas uma fração dos cálculos disponíveis no software de análise. Os perfilômetros NANOVEA são capazes de medir praticamente qualquer superfície, seja ela transparente, escura, refletiva ou opaca.</p></div></div></div>
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				</div><p>The post <a href="https://nanovea.com/pt/morfologia-da-superficie-da-tinta/">Paint Surface Morphology</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Teste de Desgaste do Revestimento de PTFE</title>
		<link>https://nanovea.com/pt/teste-de-desgaste-de-revestimento-de-ptfe/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=ptfe-coating-wear-test</link>
					<comments>https://nanovea.com/pt/teste-de-desgaste-de-revestimento-de-ptfe/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Qui, 22 de junho de 2023 19:11:39 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Linear Tribology]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Adhesive Failure]]></category>
		<category><![CDATA[Scratch Testing | Cohesive Failure]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=22853</guid>

					<description><![CDATA[<p>TESTE DE DESGASTE DE REVESTIMENTO DE PTFE USANDO TRIBÔMETRO E TESTADOR MECÂNICO Preparado por DUANJIE LI, PhD INTRODUÇÃO O politetrafluoretileno (PTFE), comumente conhecido como Teflon, é um polímero com um coeficiente de atrito (COF) excepcionalmente baixo e excelente resistência ao desgaste, dependendo das cargas aplicadas. O PTFE apresenta inércia química superior, alto ponto de fusão de 327°C (620°F) e mantém alta [...]</p>
<p>The post <a href="https://nanovea.com/pt/teste-de-desgaste-de-revestimento-de-ptfe/">PTFE Coating Wear Test</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="22853" class="elementor elementor-22853" data-elementor-post-type="post">
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					<h1 class="elementor-heading-title elementor-size-default">TESTE DE DESGASTE DE REVESTIMENTO DE PTFE</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">USANDO TRIBÔMETRO E TESTE MECÂNICO</h2>				</div>
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															<img loading="lazy" decoding="async" width="768" height="229" src="https://nanovea.com/wp-content/uploads/2023/06/Teflon-Coating-Wear-Test.jpg" class="attachment-medium_large size-medium_large wp-image-22855" alt="TESTE DE DESGASTE DO REVESTIMENTO DE PTFE" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Preparado por</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">DUANJIE LI, PhD</p>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
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									<p><span class="fontstyle0">O politetrafluoretileno (PTFE), comumente conhecido como Teflon, é um polímero com coeficiente de atrito (COF) excepcionalmente baixo e excelente resistência ao desgaste, dependendo das cargas aplicadas. O PTFE exibe inércia química superior, alto ponto de fusão de 327°C (620°F) e mantém alta resistência, tenacidade e autolubrificação em baixas temperaturas. A excepcional resistência ao desgaste dos revestimentos de PTFE os torna altamente procurados em uma ampla gama de aplicações industriais, como automotiva, aeroespacial, médica e, principalmente, utensílios de cozinha.</span></p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTÂNCIA DA AVALIAÇÃO QUANTITATIVA DE REVESTIMENTOS DE PTFE</h3>				</div>
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									<p>A combinação de um coeficiente de fricção (COF) superbaixo, excelente resistência ao desgaste e inércia química excepcional em altas temperaturas torna o PTFE a escolha ideal para revestimentos antiaderentes. Para aprimorar ainda mais seus processos mecânicos durante a P&amp;D, bem como garantir o controle ideal sobre prevenção de mau funcionamento e medidas de segurança no processo de Controle de Qualidade, é crucial ter uma técnica confiável para avaliação quantitativa dos processos tribomecânicos de revestimentos de PTFE. O controle preciso sobre o atrito da superfície, desgaste e adesão dos revestimentos é essencial para garantir o desempenho pretendido.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJETIVO DA MEDIÇÃO</h2>				</div>
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				<div class="elementor-widget-container">
									<p>Nesta aplicação, o processo de desgaste de um revestimento de PTFE para uma panela antiaderente é simulado usando o NANOVEA Tribometer no modo recíproco linear.</p>								</div>
				</div>
				<div class="elementor-element elementor-element-4b93daf elementor-widget elementor-widget-image" data-id="4b93daf" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
																<a href="https://nanovea.com/instruments/t50">
							<img loading="lazy" decoding="async" width="300" height="300" src="https://nanovea.com/wp-content/uploads/2023/06/NANOVEA-T50-Tribometer-for-Wear-Test.jpg" class="elementor-animation-grow attachment-medium size-medium wp-image-22861" alt="TRIBÔMETRO NANOVEA: Teste de abrasividade de calcário e mármore" />								</a>
															</div>
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									<p style="text-align: center; font-size: 18pt; color: black;">NANOVEA <span style="font-size: 18pt; color: #1b96cf;">T50 Compacto</span> <br>
Tribômetro de peso livre</p>								</div>
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				<div class="elementor-element elementor-element-4a2d6c2 elementor-align-center homepage-button-brochure elementor-widget elementor-widget-button" data-id="4a2d6c2" data-element_type="widget" data-widget_type="button.default">
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									<span class="elementor-button-text">DOWNLOAD DO CATÁLOGO</span>
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://nanovea.com/contact-sales-form/" id="button-quote">
						<span class="elementor-button-content-wrapper">
									<span class="elementor-button-text">OBTENHA UMA COTAÇÃO</span>
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					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-360d589" data-id="360d589" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-acb32da elementor-widget elementor-widget-text-editor" data-id="acb32da" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p>Além disso, o testador mecânico NANOVEA foi usado para realizar um teste de adesão de microarranhões para determinar a carga crítica da falha de adesão do revestimento de PTFE.</p>								</div>
				</div>
				<div class="elementor-element elementor-element-d163443 elementor-widget elementor-widget-image" data-id="d163443" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
																<a href="https://nanovea.com/instruments/pb1000/">
							<img loading="lazy" decoding="async" width="300" height="298" src="https://nanovea.com/wp-content/uploads/2023/06/NANOVEA-Scratch-Tester-amd-Nanoindentation.jpg" class="elementor-animation-grow attachment-medium size-medium wp-image-22859" alt="TESTADOR DE ARRANHÕES NANOVEA: TESTE DE DESGASTE DE REVESTIMENTO DE PTFE" />								</a>
															</div>
				</div>
				<div class="elementor-element elementor-element-000d5a3 elementor-widget elementor-widget-text-editor" data-id="000d5a3" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center; font-size: 18pt; color: black;">NANOVEA <span style="font-size: 18pt; color: #1b96cf;">PB1000 Plataforma Grande</span>
Testador Mecânico</p>								</div>
				</div>
				<div class="elementor-element elementor-element-7ee7f8d elementor-align-center homepage-button-brochure elementor-widget elementor-widget-button" data-id="7ee7f8d" data-element_type="widget" data-widget_type="button.default">
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://nanovea.com/pb1000-mechanical-tester-brochure-form/" id="button-brochure">
						<span class="elementor-button-content-wrapper">
									<span class="elementor-button-text">DOWNLOAD DO CATÁLOGO</span>
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				<div class="elementor-element elementor-element-1a60034 elementor-align-center button-quote elementor-widget elementor-widget-button" data-id="1a60034" data-element_type="widget" data-widget_type="button.default">
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://nanovea.com/contact-sales-form/" id="button-quote">
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									<span class="elementor-button-text">OBTENHA UMA COTAÇÃO</span>
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		</div>
					</div>
		</section>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-9be9abc elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="9be9abc" data-element_type="section">
						<div class="elementor-container elementor-column-gap-narrow">
					<div class="elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-b4ad12e" data-id="b4ad12e" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-cfda766 elementor-widget elementor-widget-heading" data-id="cfda766" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">PROCEDIMENTO DE TESTE</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-f8fab8d elementor-widget elementor-widget-heading" data-id="f8fab8d" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">TESTE DE GUERRA</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-782a69e elementor-widget elementor-widget-heading" data-id="782a69e" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">DESGASTE LINEAR RECIPROCANTE USANDO UM TRIBÔMETRO</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-56da828 elementor-widget elementor-widget-text-editor" data-id="56da828" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p>O comportamento tribológico da amostra de revestimento de PTFE, incluindo o coeficiente de atrito (COF) e resistência ao desgaste, foi avaliado usando o NANOVEA <a href="https://nanovea.com/tribometers/">Tribômetro </a>no modo recíproco linear. Uma ponta esférica de aço inoxidável 440 com diâmetro de 3 mm (Grau 100) foi usada contra o revestimento. O COF foi monitorado continuamente durante o teste de desgaste do revestimento de PTFE.</p><p> </p><p>A taxa de desgaste, K, foi calculada usando a fórmula K=V/(F×s)=A/(F×n), onde V representa o volume desgastado, F é a carga normal, s é a distância de deslizamento, A é a área da seção transversal da trilha de desgaste e n é o número de cursos. Os perfis de desgaste foram avaliados usando o NANOVEA <a href="https://nanovea.com/profilometers/">Perfilômetro Óptico</a>, e a morfologia da trilha de desgaste foi examinada usando um microscópio óptico.</p>								</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-7600025" data-id="7600025" data-element_type="column" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
			<div class="elementor-widget-wrap">
							</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-94e8004 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="94e8004" data-element_type="section">
						<div class="elementor-container elementor-column-gap-no">
					<div class="elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cf2d779" data-id="cf2d779" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-b24853d elementor-widget elementor-widget-heading" data-id="b24853d" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">PARÂMETROS DE TESTE DE DESGASTE</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-ab573c0 elementor-widget elementor-widget-text-editor" data-id="ab573c0" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 100%;">
<tbody>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARREGAR</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>30 N</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DURAÇÃO DO TESTE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>5 minutos</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TAXA DE DESLIZAMENTO</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>80 rpm</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">AMPLITUDE DA PISTA </strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>8mm</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">REVOLUÇÕES</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>300</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DIÂMETRO DA ESFERA</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>3 mm</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">MATERIAL DA ESFERA</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Aço inoxidável 440</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">LUBRICANTE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Nenhum</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">ATMOSPHERE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Ar</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TEMPERATURA </strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>230C (RT)</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">UMIDADE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>43%</strong></em></td>
</tr>
</tbody>
</table>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-e70ba4b elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="e70ba4b" data-element_type="section">
						<div class="elementor-container elementor-column-gap-narrow">
					<div class="elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-ef00b99" data-id="ef00b99" data-element_type="column" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-5abc2e8 elementor-widget__width-initial elementor-widget elementor-widget-spacer" data-id="5abc2e8" data-element_type="widget" data-widget_type="spacer.default">
				<div class="elementor-widget-container">
							<div class="elementor-spacer">
			<div class="elementor-spacer-inner"></div>
		</div>
						</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-07b77c1" data-id="07b77c1" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-5cf5562 elementor-widget elementor-widget-heading" data-id="5cf5562" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">PROCEDIMENTO DE TESTE</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-31df6ff elementor-widget elementor-widget-heading" data-id="31df6ff" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">TESTE DE SCRATCH</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-1dca591 elementor-widget elementor-widget-heading" data-id="1dca591" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">TESTE DE ADESÃO DE MICRO RISCOS USANDO TESTE MECÂNICO</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-3802982 elementor-widget elementor-widget-text-editor" data-id="3802982" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p>A medição da adesão ao risco de PTFE foi realizada usando o NANOVEA <a href="https://nanovea.com/mechanical-testers/">Testador Mecânico</a> com uma ponta de diamante Rockwell C 1200 (raio de 200 μm) no modo Micro Scratch Tester.</p><p><span style="color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-size: var( --e-global-typography-text-font-size ); font-weight: var( --e-global-typography-text-font-weight );">Para garantir a reprodutibilidade dos resultados, três testes foram realizados em condições de teste idênticas.</span></p>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-c60c719 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="c60c719" data-element_type="section">
						<div class="elementor-container elementor-column-gap-no">
					<div class="elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-83a58b4" data-id="83a58b4" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-643c444 elementor-widget elementor-widget-heading" data-id="643c444" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">PARÂMETROS DE TESTE DE ARRANHÕES</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-8f0178d elementor-widget elementor-widget-text-editor" data-id="8f0178d" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 100%;">
<tbody>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TIPO CARREGADO</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Progressivo</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARGA INICIAL </strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0,01 mN</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARGA FINAL</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>20 mN</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TAXA DE CARREGAMENTO</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>40mN/min</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">COMPRIMENTO DE SCRATCH</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>3 mm</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">VELOCIDADE DE REPRESENTAÇÃO, dx/dt</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>6,0 mm/min</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">GEOMETRIA INDENTER</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>120o Rockwell C</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">MATERIAL INDENTERIAL (dica)</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Diamante</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">RAIO DA PONTA INDENTADA </strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>200 μm</strong></em></td>
</tr>
</tbody>
</table>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-c8c9bdf elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="c8c9bdf" data-element_type="section">
						<div class="elementor-container elementor-column-gap-default">
					<div class="elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-724e51f" data-id="724e51f" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-ec6977f elementor-widget elementor-widget-heading" data-id="ec6977f" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS &amp; DISCUSSÃO</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-51ed2c5 elementor-widget elementor-widget-heading" data-id="51ed2c5" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">DESGASTE LINEAR RECIPROCANTE USANDO UM TRIBÔMETRO</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-dcde8ed elementor-widget elementor-widget-text-editor" data-id="dcde8ed" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p>O COF registrado in situ é mostrado na FIGURA 1. A amostra de teste exibiu um COF de ~0,18 durante as primeiras 130 rotações, devido à baixa pegajosidade do PTFE. No entanto, houve um aumento repentino no COF para ~1 quando o revestimento rompeu, revelando o substrato por baixo. Após os testes alternativos lineares, o perfil de desgaste foi medido usando o NANOVEA <a href="https://nanovea.com/profilometers/">Perfilômetro óptico sem contato</a>, conforme mostrado na FIGURA 2. A partir dos dados obtidos, a taxa de desgaste correspondente foi calculada como sendo ~2,78 × 10-3 mm3/Nm, enquanto a profundidade da trilha de desgaste foi determinada como sendo 44,94 µm.</p>								</div>
				</div>
				<div class="elementor-element elementor-element-ebeca8a elementor-widget elementor-widget-image" data-id="ebeca8a" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="600" height="343" src="https://nanovea.com/wp-content/uploads/2023/06/PTFE-tribological-testing-of-cookware-coatings.jpg" class="attachment-medium_large size-medium_large wp-image-22868" alt="ESTUDO DE DESGASTE DO REVESTIMENTO DE PTFE" />															</div>
				</div>
				<div class="elementor-element elementor-element-56fb15b elementor-widget elementor-widget-text-editor" data-id="56fb15b" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									Configuração do teste de desgaste do revestimento de PTFE no Tribômetro NANOVEA T50.								</div>
				</div>
				<div class="elementor-element elementor-element-7d46f96 elementor-widget elementor-widget-image" data-id="7d46f96" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="768" height="303" src="https://nanovea.com/wp-content/uploads/2023/06/PTFE-Coefficient-of-Friction-COF.jpg" class="attachment-medium_large size-medium_large wp-image-22863" alt="TEFLON COF" />															</div>
				</div>
				<div class="elementor-element elementor-element-0a82ff4 elementor-widget elementor-widget-text-editor" data-id="0a82ff4" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 1:</span><span class="fontstyle0" style="color: #000000;"> Evolução do COF durante o teste de desgaste do revestimento de PTFE.</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-bb143b0 elementor-widget elementor-widget-image" data-id="bb143b0" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="768" height="284" src="https://nanovea.com/wp-content/uploads/2023/06/PTFE-QC-Wear-Track.jpg" class="attachment-medium_large size-medium_large wp-image-22864" alt="TESTE DE DESGASTE DE PTFE" />															</div>
				</div>
				<div class="elementor-element elementor-element-e8eb8fa elementor-widget elementor-widget-text-editor" data-id="e8eb8fa" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Extração de perfil de pista de desgaste PTFE.</span></p>								</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-5af507a elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="5af507a" data-element_type="section">
						<div class="elementor-container elementor-column-gap-extended">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-ce74c3b" data-id="ce74c3b" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-43cc09b elementor-widget elementor-widget-heading" data-id="43cc09b" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">PTFE Antes da descoberta</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-d0f1ac7 elementor-widget elementor-widget-text-editor" data-id="d0f1ac7" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 100%;">
<tbody>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">COF máximo</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0.217</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">Mínimo COF</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0.125</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">COF médio</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0.177</strong></em></td>
</tr>
</tbody>
</table>								</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a891337" data-id="a891337" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-8866853 elementor-widget elementor-widget-heading" data-id="8866853" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">PTFE Após avanço</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-3484322 elementor-widget elementor-widget-text-editor" data-id="3484322" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 100%;">
<tbody>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">COF máximo</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0.217</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">Mínimo COF</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0.125</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">COF médio</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0.177</strong></em></td>
</tr>
</tbody>
</table>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<div class="elementor-element elementor-element-3455e16 elementor-widget elementor-widget-text-editor" data-id="3455e16" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 1:</span><span class="fontstyle0" style="color: #000000;"> COF antes e depois do rompimento durante o teste de desgaste.</span></p>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-d3e37f5 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="d3e37f5" data-element_type="section">
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				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS &amp; DISCUSSÃO</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-29d3f80 elementor-widget elementor-widget-heading" data-id="29d3f80" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">TESTE DE ADESÃO DE MICRO RISCOS USANDO TESTE MECÂNICO</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-380bdec elementor-widget elementor-widget-text-editor" data-id="380bdec" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p>A adesão do revestimento de PTFE ao substrato é medida usando testes de arranhão com uma ponta de diamante de 200 µm. A micrografia é mostrada na FIGURA 3 e FIGURA 4, Evolução do COF e profundidade de penetração na FIGURA 5. Os resultados do teste de arranhão do revestimento de PTFE estão resumidos na TABELA 4. À medida que a carga na ponta de diamante aumentou, ela penetrou progressivamente no revestimento, resultando em um aumento no COF. Quando uma carga de ~8,5 N foi atingida, o rompimento do revestimento e a exposição do substrato ocorreram sob alta pressão, levando a um alto COF de ~0,3. O St Dev baixo mostrado na TABELA 2 demonstra a repetibilidade do teste de arranhão do revestimento de PTFE conduzido usando o testador mecânico NANOVEA.</p>								</div>
				</div>
				<div class="elementor-element elementor-element-c5b6e9a elementor-widget elementor-widget-image" data-id="c5b6e9a" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="768" height="247" src="https://nanovea.com/wp-content/uploads/2023/06/PTFE-scratch-test.jpg" class="attachment-medium_large size-medium_large wp-image-22865" alt="TESTE DE REVESTIMENTO DE PTFE" />															</div>
				</div>
				<div class="elementor-element elementor-element-6c3284e elementor-widget elementor-widget-text-editor" data-id="6c3284e" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Micrografia do arranhão completo em PTFE (10X).</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-0300e3b elementor-widget elementor-widget-image" data-id="0300e3b" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="768" height="466" src="https://nanovea.com/wp-content/uploads/2023/06/PTFE-scratch-testing-NANOVEA.jpg" class="attachment-medium_large size-medium_large wp-image-22866" alt="TESTE DE ARRANHÃO DO REVESTIMENTO DE PTFE" />															</div>
				</div>
				<div class="elementor-element elementor-element-9d031a5 elementor-widget elementor-widget-text-editor" data-id="9d031a5" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 4:</span><span class="fontstyle0" style="color: #000000;"> Micrografia do arranhão completo em PTFE (10X).</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-61723a1 elementor-widget elementor-widget-image" data-id="61723a1" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="768" height="315" src="https://nanovea.com/wp-content/uploads/2023/06/PTFE-testing-critical-point-of-failure.jpg" class="attachment-medium_large size-medium_large wp-image-22867" alt="TESTE DE ATRITO DO REVESTIMENTO DE PTFE" />															</div>
				</div>
				<div class="elementor-element elementor-element-3fdb4a6 elementor-widget elementor-widget-text-editor" data-id="3fdb4a6" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 5:</span><span class="fontstyle0" style="color: #000000;"> Gráfico de atrito mostrando a linha do ponto crítico de falha do PTFE.</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-c7cfe10 elementor-widget elementor-widget-text-editor" data-id="c7cfe10" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 90.0426%; height: 216px;">
<tbody>
<tr style="height: 48px;">
<td style="width: 20%; height: 48px;"><b><i>ARRANHÃO</i></b></td>
<td style="width: 20%; height: 48px;"><b><i>Ponto de Falha [N]</i></b></td>
<td style="width: 20%; height: 48px;"><b><i>Força de Atrito [N]</i></b></td>
<td style="width: 20%; height: 48px;"><b><i>COF</i></b></td>
</tr>
<tr style="height: 24px;">
<td style="width: 20%; height: 24px;">1</td>
<td style="width: 20%; height: 24px;">0.335</td>
<td style="width: 20%; height: 24px;">0.124</td>
<td style="width: 20%; height: 24px;">0.285</td>
</tr>
<tr style="height: 24px;">
<td style="width: 20%; height: 24px;">2</td>
<td style="width: 20%; height: 24px;">0.337</td>
<td style="width: 20%; height: 24px;">0.207</td>
<td style="width: 20%; height: 24px;">0.310</td>
</tr>
<tr style="height: 24px;">
<td style="width: 20%; height: 24px;">3</td>
<td style="width: 20%; height: 24px;">0.380</td>
<td style="width: 20%; height: 24px;">0.229</td>
<td style="width: 20%; height: 24px;">0.295</td>
</tr>
<tr style="height: 24px;">
<td style="width: 20%; height: 24px;">Média</td>
<td style="width: 20%; height: 24px;">8.52</td>
<td style="width: 20%; height: 24px;">2.47</td>
<td style="width: 20%; height: 24px;">0.297</td>
</tr>
<tr style="height: 24px;">
<td style="width: 20%; height: 24px;">St dev</td>
<td style="width: 20%; height: 24px;">0.17</td>
<td style="width: 20%; height: 24px;">0.16</td>
<td style="width: 20%; height: 24px;">0.012</td>
</tr>
</tbody>
</table>								</div>
				</div>
				<div class="elementor-element elementor-element-cfdb718 elementor-widget elementor-widget-text-editor" data-id="cfdb718" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABELA 2:</span><span class="fontstyle0" style="color: #000000;"> Resumo da carga crítica, força de atrito e COF durante o teste de raspagem.</span></p>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-93e0d41 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="93e0d41" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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				<div class="elementor-element elementor-element-fedc4ac elementor-widget elementor-widget-text-editor" data-id="fedc4ac" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p>Neste estudo, realizamos uma simulação do processo de desgaste de um revestimento de PTFE para panelas antiaderentes usando o Tribômetro NANOVEA T50 no modo recíproco linear. O revestimento de PTFE exibiu um baixo COF de ~0,18, o revestimento experimentou um avanço em torno de 130 revoluções. A avaliação quantitativa da adesão do revestimento de PTFE ao substrato de metal foi realizada usando o NANOVEA Mechanical Tester, que determinou a carga crítica da falha de adesão do revestimento em ~8,5 N neste teste.</p><p> </p><p>Os tribômetros NANOVEA oferecem recursos de teste de atrito e desgaste precisos e repetíveis usando modos rotativos e lineares compatíveis com ISO e ASTM. Eles fornecem módulos opcionais para desgaste em alta temperatura, lubrificação e tribocorrosão, todos integrados em um único sistema. Essa versatilidade permite que os usuários simulem ambientes de aplicação do mundo real com mais precisão e compreendam melhor os mecanismos de desgaste e as propriedades tribológicas de diferentes materiais.</p><p> </p><p>Os Testadores Mecânicos NANOVEA oferecem módulos Nano, Micro e Macro, cada um dos quais inclui modos de teste de indentação, arranhão e desgaste compatíveis com ISO e ASTM, fornecendo a mais ampla e amigável gama de recursos de teste disponíveis em um único sistema.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/pt/teste-de-desgaste-de-revestimento-de-ptfe/">PTFE Coating Wear Test</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Mapeamento de desgaste progressivo de pisos usando tribômetro</title>
		<link>https://nanovea.com/pt/mapeamento-de-desgaste-progressivo-de-pisos-usando-tribometro/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=progressive-wear-mapping-of-flooring-using-tribometer</link>
					<comments>https://nanovea.com/pt/mapeamento-de-desgaste-progressivo-de-pisos-usando-tribometro/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Ter, 06 de junho de 2023 15:51:48 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Profilometry | Volume and Area]]></category>
		<category><![CDATA[Ring on Ring Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=22326</guid>

					<description><![CDATA[<p>Flooring Wear Testing Progressive Wear Mapping of Flooring using Tribometer with integrated Profilometer Preparado por FRANK LIU INTRODUÇÃO Os materiais dos pisos são projetados para serem duráveis, mas muitas vezes sofrem desgaste devido a atividades cotidianas, como movimento e uso de móveis. Para garantir sua longevidade, a maioria dos tipos de piso tem uma camada protetora de desgaste que [...]</p>
<p>The post <a href="https://nanovea.com/pt/mapeamento-de-desgaste-progressivo-de-pisos-usando-tribometro/">Progressive Wear Mapping of Flooring using Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="22326" class="elementor elementor-22326" data-elementor-post-type="post">
						<section class="elementor-section elementor-top-section elementor-element elementor-element-7ec3d48 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="7ec3d48" data-element_type="section">
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					<h1 class="elementor-heading-title elementor-size-default">Teste de desgaste do piso</h1>				</div>
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				<div class="elementor-element elementor-element-d107f9b elementor-widget elementor-widget-heading" data-id="d107f9b" data-element_type="widget" data-widget_type="heading.default">
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					<h2 class="elementor-heading-title elementor-size-default">Mapeamento progressivo do desgaste do piso usando tribômetro com perfilômetro integrado</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-73c118d elementor-widget elementor-widget-image" data-id="73c118d" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="768" height="217" src="https://nanovea.com/wp-content/uploads/2023/06/Floor-QC-Progressive-Wear-Testing-on-Flooring.jpg" class="attachment-medium_large size-medium_large wp-image-22330" alt="teste de desgaste do piso" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Preparado por</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">LIU FRANCA</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
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									<p>Os materiais do piso são projetados para serem duráveis, mas muitas vezes sofrem desgaste devido às atividades cotidianas, como movimento e uso de móveis. Para garantir sua longevidade, a maioria dos tipos de piso possui uma camada protetora contra desgaste que resiste a danos. No entanto, a espessura e a durabilidade da camada de desgaste variam dependendo do tipo de piso e do nível de tráfego de pedestres. Além disso, diferentes camadas dentro da estrutura do piso, como revestimentos UV, camadas decorativas e esmaltes, apresentam taxas de desgaste variadas. É aí que entra o mapeamento de desgaste progressivo. Usando o Tribômetro NANOVEA T2000 com um <a style="background-color: #ffffff;" href="https://nanovea.com/profilometers/">Perfilômetro 3D sem contato</a>, monitoramento preciso e análise do desempenho e longevidade dos materiais de piso podem ser feitos. Ao fornecer informações detalhadas sobre o comportamento de desgaste de vários materiais de piso, cientistas e profissionais técnicos podem tomar decisões mais informadas ao selecionar e projetar novos sistemas de piso.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTÂNCIA DO MAPEAMENTO DE DESGASTE PROGRESSIVO PARA PAINÉIS DE PISO</h3>				</div>
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									<p>Tradicionalmente, os testes de pisos têm se concentrado na taxa de desgaste de uma amostra para determinar sua durabilidade contra o desgaste. No entanto, o mapeamento de desgaste progressivo permite analisar a taxa de desgaste da amostra durante todo o teste, fornecendo informações valiosas sobre seu comportamento de desgaste. Essa análise aprofundada permite correlações entre os dados de atrito e a taxa de desgaste, o que pode identificar as causas principais do desgaste. Deve-se observar que as taxas de desgaste não são constantes durante os testes de desgaste. Portanto, observar a progressão do desgaste proporciona uma avaliação mais precisa do desgaste da amostra. Indo além dos métodos de teste tradicionais, a adoção do mapeamento de desgaste progressivo contribuiu para avanços significativos no campo de testes de pisos.</p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-0bfcde3 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="0bfcde3" data-element_type="section">
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									<div class="group w-full text-gray-800 dark:text-gray-100 border-b border-black/10 dark:border-gray-900/50 bg-gray-50 dark:bg-[#444654]"><div class="flex p-4 gap-4 text-base md:gap-6 md:max-w-2xl lg:max-w-xl xl:max-w-3xl md:py-6 lg:px-0 m-auto"><div class="relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]"><div class="flex flex-grow flex-col gap-3"><div class="min-h-[20px] flex flex-col items-start gap-4 whitespace-pre-wrap break-words"><div class="markdown prose w-full break-words dark:prose-invert light"><p>O Tribômetro NANOVEA T2000 com perfilômetro 3D sem contato integrado é uma solução inovadora para testes de desgaste e medições de perda de volume. Sua capacidade de se mover com precisão entre o pino e o perfilômetro garante a confiabilidade dos resultados, eliminando qualquer desvio no raio ou localização da trilha de desgaste. Mas isso não é tudo – os recursos avançados do perfilômetro sem contato 3D permitem medições de superfície em alta velocidade, reduzindo o tempo de digitalização para meros segundos. Com capacidade de aplicar cargas de até 2.000 N e atingir velocidades de fiação de até 5.000 rpm, a NANOVEA T2000 <a href="https://nanovea.com/tribometers/">Tribômetro</a> oferece versatilidade e precisão no processo de avaliação. Está claro que este equipamento desempenha um papel vital no mapeamento do desgaste progressivo.</p></div></div></div><div class="flex justify-between lg:block"><div class="text-gray-400 flex self-end lg:self-center justify-center mt-2 gap-2 md:gap-3 lg:gap-1 lg:absolute lg:top-0 lg:translate-x-full lg:right-0 lg:mt-0 lg:pl-2 visible"> </div></div></div></div></div>								</div>
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															<img loading="lazy" decoding="async" width="555" height="448" src="https://nanovea.com/wp-content/uploads/2023/06/Wear-Testing-Sample-Setup.jpg" class="attachment-large size-large wp-image-22347" alt="teste de desgaste do piso utilizando tribômetro" />															</div>
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															<img loading="lazy" decoding="async" width="458" height="446" src="https://nanovea.com/wp-content/uploads/2023/06/Post-wear-test-wear-track-profilometry.jpg" class="attachment-large size-large wp-image-22333" alt="teste de desgaste do piso utilizando perfilômetro" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 1:</span><span class="fontstyle0" style="color: #000000;"> Configuração da amostra antes do teste de desgaste
(esquerda) e profilometria da trilha de desgaste após o teste de desgaste (direita).</span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJETIVO DA MEDIÇÃO</h2>				</div>
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									<p>O teste de mapeamento de desgaste progressivo foi realizado em dois tipos de materiais de piso: pedra e madeira. Cada amostra foi submetida a um total de 7 ciclos de teste, com durações crescentes de 2, 4, 8, 20, 40, 60 e 120 s, permitindo uma comparação do desgaste ao longo do tempo. Após cada ciclo de teste, a trilha de desgaste foi perfilada usando o NANOVEA 3D Non-Contact Profilometer. A partir dos dados coletados pelo perfilômetro, o volume do furo e a taxa de desgaste podem ser analisados usando os recursos integrados do software NANOVEA Tribometer ou do nosso software de análise de superfície, Mountains.</p>								</div>
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									<p style="text-align: center; font-size: 20pt; color: black;">NANOVEA <span style="font-size: 20pt; color: #1b96cf;">T2000 Alta Carga</span><br />Tribômetro pneumático</p>								</div>
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																<a href="https://nanovea.com/instruments/t2000/">
							<img loading="lazy" decoding="async" width="591" height="579" src="https://nanovea.com/wp-content/uploads/2022/06/NANOVEA-Tribometer-T2000.png" class="elementor-animation-grow attachment-medium_large size-medium_large wp-image-20089" alt="Tribômetro pneumático de alta carga NANOVEA T2000" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">AS AMOSTRAS</h2>				</div>
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															<img loading="lazy" decoding="async" width="458" height="456" src="https://nanovea.com/wp-content/uploads/2023/06/Wood-Floor-and-Stone-Flooring-Wear-Test.jpg" class="attachment-medium_large size-medium_large wp-image-22348" alt="amostras de teste de mapeamento de desgaste de madeira e pedra" />															</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-94e8004 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="94e8004" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">PARÂMETROS DE TESTE DE MAPEAMENTO DE DESGASTE</h2>				</div>
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									<table style="border-collapse: collapse; width: 102.375%;"><tbody><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARREGAR</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>40 N</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DURAÇÃO DO TESTE</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>varia</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">SPEED</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>200 rpm</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">RADIUS</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>10 mm</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DISTÂNCIA</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>varia</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">MATERIAL DA ESFERA</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>Carbeto de tungstênio</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DIÂMETRO DA ESFERA</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>10 mm</strong></em></td></tr></tbody></table>								</div>
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									<p style="text-align: center;">A duração do teste usada nos 7 ciclos foi <span class="fontstyle0" style="color: #1b96cf;">2, 4, 8, 20, 40, 60 e 120 segundos</span>respectivamente.
As distâncias percorridas foram <span class="fontstyle0" style="color: #1b96cf;">0,40, 0,81, 1,66, 4,16, 8,36, 12,55 e 25,11 metros.</span></p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-f562115 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="f562115" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS DO MAPEAMENTO DE DESGASTE</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">Piso de madeira</h2>				</div>
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				<div class="elementor-element elementor-element-7871976 elementor-widget elementor-widget-text-editor" data-id="7871976" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 90.0426%; height: 216px;"><tbody><tr style="height: 48px;"><td style="width: 20%; height: 48px;"><b><i>Ciclo de teste</i></b></td><td style="width: 20%; height: 48px;"><b><i>COF máximo</i></b></td><td style="width: 20%; height: 48px;"><b><i>Mínimo COF</i></b></td><td style="width: 20%; height: 48px;"><b><i>Avg. COF</i></b></td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">1</td><td style="width: 20%; height: 24px;">0.335</td><td style="width: 20%; height: 24px;">0.124</td><td style="width: 20%; height: 24px;">0.275</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">2</td><td style="width: 20%; height: 24px;">0.337</td><td style="width: 20%; height: 24px;">0.207</td><td style="width: 20%; height: 24px;">0.295</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">3</td><td style="width: 20%; height: 24px;">0.380</td><td style="width: 20%; height: 24px;">0.229</td><td style="width: 20%; height: 24px;">0.329</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">4</td><td style="width: 20%; height: 24px;">0.393</td><td style="width: 20%; height: 24px;">0.265</td><td style="width: 20%; height: 24px;">0.354</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">5</td><td style="width: 20%; height: 24px;">0.352</td><td style="width: 20%; height: 24px;">0.205</td><td style="width: 20%; height: 24px;">0.314</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">6</td><td style="width: 20%; height: 24px;">0.345</td><td style="width: 20%; height: 24px;">0.199</td><td style="width: 20%; height: 24px;">0.312</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">7</td><td style="width: 20%; height: 24px;">0.315</td><td style="width: 20%; height: 24px;">0.211</td><td style="width: 20%; height: 24px;">0.293</td></tr></tbody></table><p><em><strong style="color: #1b96cf;"> </strong></em></p><p><em><strong style="color: #1b96cf;">ORIENTAÇÃO RADIAL</strong></em></p><table style="border-collapse: collapse; width: 98.7212%; height: 270px;"><tbody><tr style="height: 102px;"><td style="width: 20%; height: 102px;"><b><i>Ciclo de teste</i></b></td><td style="width: 20%; height: 102px;"><b><i>Perda de volume total (µm3)</i></b></td><td style="width: 20%; height: 102px;"><b><i>Distância total<br />Percorrida (m)</i></b></td><td style="width: 19.723%; height: 102px;"><b><i>Taxa de desgaste<br />(mm/Nm) x10<sup>-5</sup></i></b></td><td style="width: 19.3314%; height: 102px;"><b><i>Taxa de desgaste instantâneo<br />(mm/Nm) x10<sup>-5</sup></i></b></td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">1</td><td style="width: 20%; height: 24px;">296247687</td><td style="width: 20%; height: 24px;">0.40</td><td style="width: 19.723%; height: 24px;">1833.746</td><td style="width: 19.3314%; height: 24px;">1833.746</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">2</td><td style="width: 20%; height: 24px;">355245227</td><td style="width: 20%; height: 24px;">1.22</td><td style="width: 19.723%; height: 24px;">1093.260</td><td style="width: 19.3314%; height: 24px;">181.5637</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">3</td><td style="width: 20%; height: 24px;">596371326</td><td style="width: 20%; height: 24px;">2.88</td><td style="width: 19.723%; height: 24px;">898.242</td><td style="width: 19.3314%; height: 24px;">363.1791</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">4</td><td style="width: 20%; height: 24px;">883747767</td><td style="width: 20%; height: 24px;">7.04</td><td style="width: 19.723%; height: 24px;">530.629</td><td style="width: 19.3314%; height: 24px;">172.5496</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">5</td><td style="width: 20%; height: 24px;">1207179951</td><td style="width: 20%; height: 24px;">15.40</td><td style="width: 19.723%; height: 24px;">360.889</td><td style="width: 19.3314%; height: 24px;">96.69074</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">6</td><td style="width: 20%; height: 24px;">1472745318</td><td style="width: 20%; height: 24px;">27.95</td><td style="width: 19.723%; height: 24px;">293.329</td><td style="width: 19.3314%; height: 24px;">52.89311</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">7</td><td style="width: 20%; height: 24px;">1851319210</td><td style="width: 20%; height: 24px;">53.06</td><td style="width: 19.723%; height: 24px;">184.343</td><td style="width: 19.3314%; height: 24px;">37.69599</td></tr></tbody></table>								</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-641ab11 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="641ab11" data-element_type="section">
						<div class="elementor-container elementor-column-gap-default">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-bad4df2" data-id="bad4df2" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-fb0c784 elementor-widget elementor-widget-image" data-id="fb0c784" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="619" height="403" src="https://nanovea.com/wp-content/uploads/2023/06/Progressive-Tribology-Mapping-of-Flooring-21.jpg" class="attachment-large size-large wp-image-22334" alt="taxa de desgaste progressivo da madeira versus distância total" />															</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-af91e9d" data-id="af91e9d" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-dfb76d1 elementor-widget elementor-widget-image" data-id="dfb76d1" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="619" height="403" src="https://nanovea.com/wp-content/uploads/2023/06/Wood-Floor-Wear-Rate.jpg" class="attachment-large size-large wp-image-22350" alt="Taxa de desgaste do piso de madeira" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<div class="elementor-element elementor-element-143a125 elementor-widget elementor-widget-text-editor" data-id="143a125" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Taxa de desgaste versus distância total percorrida (esquerda)<br />e taxa de desgaste instantâneo versus ciclo de teste (direita) para pisos de madeira.</span></p>								</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-d103b46 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="d103b46" data-element_type="section">
						<div class="elementor-container elementor-column-gap-default">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-3a5b214" data-id="3a5b214" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-6ff3d30 elementor-widget elementor-widget-image" data-id="6ff3d30" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="595" height="347" src="https://nanovea.com/wp-content/uploads/2023/06/Wood-Flooring-Wear-Test-COF.jpg" class="attachment-large size-large wp-image-22352" alt="teste do coeficiente de atrito do piso" />															</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1cdc909" data-id="1cdc909" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-d57ad14 elementor-widget elementor-widget-image" data-id="d57ad14" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="585" height="387" src="https://nanovea.com/wp-content/uploads/2023/06/Wood-Floor-Wear-Track-Profilometer.jpg" class="attachment-large size-large wp-image-22351" alt="mapeamento do desgaste progressivo do piso de madeira" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<div class="elementor-element elementor-element-aa3cabd elementor-widget elementor-widget-text-editor" data-id="aa3cabd" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Gráfico COF e visualização 3D do rastro de desgaste do teste #7 em piso de madeira.</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-89ac0ae elementor-widget elementor-widget-image" data-id="89ac0ae" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="1024" height="172" src="https://nanovea.com/wp-content/uploads/2023/06/Wood-Floor-QC-Tribometer.jpg" class="attachment-large size-large wp-image-22349" alt="perfil extraído do mapeamento de desgaste" />															</div>
				</div>
				<div class="elementor-element elementor-element-192e2cf elementor-widget elementor-widget-image" data-id="192e2cf" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="1024" height="274" src="https://nanovea.com/wp-content/uploads/2023/06/Wood-Flooring-Wear-Tester.jpg" class="attachment-large size-large wp-image-22329" alt="resultados dos testes de desgaste do piso" />															</div>
				</div>
				<div class="elementor-element elementor-element-7ca0504 elementor-widget elementor-widget-image" data-id="7ca0504" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="1024" height="305" src="https://nanovea.com/wp-content/uploads/2023/06/Progressive-Tribology-Mapping-of-Flooring-27.jpg" class="attachment-large size-large wp-image-22335" alt="caracterização da superfície do piso" />															</div>
				</div>
				<div class="elementor-element elementor-element-56fb15b elementor-widget elementor-widget-text-editor" data-id="56fb15b" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 4:</span><span class="fontstyle0" style="color: #000000;"> Análise da seção transversal da trilha de desgaste de madeira do teste #7</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-3a5f744 elementor-widget elementor-widget-image" data-id="3a5f744" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="794" height="910" src="https://nanovea.com/wp-content/uploads/2023/06/Stone-Floor-Wear-Test-Volume-and-Area-Analysis.jpg" class="attachment-large size-large wp-image-22342" alt="mapeamento progressivo de desgaste análise de volume e área" />															</div>
				</div>
				<div class="elementor-element elementor-element-7a3d760 elementor-widget elementor-widget-text-editor" data-id="7a3d760" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 5:</span><span class="fontstyle0" style="color: #000000;"> Análise de volume e área da trilha de desgaste no teste de amostra de madeira #7.</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-dc3da62 elementor-widget elementor-widget-text-editor" data-id="dc3da62" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;">
  <a href="https://www.youtube.com/watch?v=iZ8zyF9MD5M">
    <span style="color: #1b96cf; font-size: 1.5em;">Para obter detalhes completos sobre os resultados, clique aqui.</span>
  </a>
</p>
								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-1df9a23 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="1df9a23" data-element_type="section">
						<div class="elementor-container elementor-column-gap-no">
					<div class="elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-971dc5c" data-id="971dc5c" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-c91d508 elementor-widget elementor-widget-heading" data-id="c91d508" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS DO MAPEAMENTO DE DESGASTE</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-eb8bfd6 elementor-widget elementor-widget-heading" data-id="eb8bfd6" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">Pavimento em pedra</h2>				</div>
				</div>
				<div class="elementor-element elementor-element-d6db219 elementor-widget elementor-widget-text-editor" data-id="d6db219" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 90.0426%; height: 216px;"><tbody><tr style="height: 48px;"><td style="width: 20%; height: 48px;"><b><i>Ciclo de teste</i></b></td><td style="width: 20%; height: 48px;"><b><i>COF máximo</i></b></td><td style="width: 20%; height: 48px;"><b><i>Mínimo COF</i></b></td><td style="width: 20%; height: 48px;"><b><i>Avg. COF</i></b></td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">1</td><td style="width: 20%; height: 24px;">0.249</td><td style="width: 20%; height: 24px;">0.035</td><td style="width: 20%; height: 24px;">0.186</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">2</td><td style="width: 20%; height: 24px;">0.349</td><td style="width: 20%; height: 24px;">0.197</td><td style="width: 20%; height: 24px;">0.275</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">3</td><td style="width: 20%; height: 24px;">0.294</td><td style="width: 20%; height: 24px;">0.154</td><td style="width: 20%; height: 24px;">0.221</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">4</td><td style="width: 20%; height: 24px;">0.503</td><td style="width: 20%; height: 24px;">0.124</td><td style="width: 20%; height: 24px;">0.273</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">5</td><td style="width: 20%; height: 24px;">0.548</td><td style="width: 20%; height: 24px;">0.106</td><td style="width: 20%; height: 24px;">0.390</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">6</td><td style="width: 20%; height: 24px;">0.510</td><td style="width: 20%; height: 24px;">0.129</td><td style="width: 20%; height: 24px;">0.434</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">7</td><td style="width: 20%; height: 24px;">0.527</td><td style="width: 20%; height: 24px;">0.181</td><td style="width: 20%; height: 24px;">0.472</td></tr></tbody></table><p><em><strong style="color: #1b96cf;"> </strong></em></p><p><em><strong style="color: #1b96cf;">ORIENTAÇÃO RADIAL</strong></em></p><table style="border-collapse: collapse; width: 98.7212%; height: 270px;"><tbody><tr style="height: 102px;"><td style="width: 20%; height: 102px;"><b><i>Ciclo de teste</i></b></td><td style="width: 20%; height: 102px;"><b><i>Perda de volume total (µm3)</i></b></td><td style="width: 20%; height: 102px;"><b><i>Distância total<br />Percorrida (m)</i></b></td><td style="width: 19.723%; height: 102px;"><b><i>Taxa de desgaste<br />(mm/Nm) x10<sup>-5</sup></i></b></td><td style="width: 19.3314%; height: 102px;"><b><i>Taxa de desgaste instantâneo<br />(mm/Nm) x10<sup>-5</sup></i></b></td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">1</td><td style="width: 20%; height: 24px;">96278846</td><td style="width: 20%; height: 24px;">0.40</td><td style="width: 19.723%; height: 24px;">595.957</td><td style="width: 19.3314%; height: 24px;">595.9573</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">2</td><td style="width: 20%; height: 24px;">804289731</td><td style="width: 20%; height: 24px;">1.22</td><td style="width: 19.723%; height: 24px;">2475.185</td><td style="width: 19.3314%; height: 24px;">2178.889</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">3</td><td style="width: 20%; height: 24px;">1316147855</td><td style="width: 20%; height: 24px;">2.88</td><td style="width: 19.723%; height: 24px;">1982.355</td><td style="width: 19.3314%; height: 24px;">770.9501</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">4</td><td style="width: 20%; height: 24px;">3136530215</td><td style="width: 20%; height: 24px;">7.04</td><td style="width: 19.723%; height: 24px;">1883.269</td><td style="width: 19.3314%; height: 24px;">1093.013</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">5</td><td style="width: 20%; height: 24px;">10821732180</td><td style="width: 20%; height: 24px;">15.40</td><td style="width: 19.723%; height: 24px;">3235.180</td><td style="width: 19.3314%; height: 24px;">2297.508</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">6</td><td style="width: 20%; height: 24px;">20174960343</td><td style="width: 20%; height: 24px;">27.95</td><td style="width: 19.723%; height: 24px;">4018.282</td><td style="width: 19.3314%; height: 24px;">1862.899</td></tr><tr style="height: 24px;"><td style="width: 20%; height: 24px;">7</td><td style="width: 20%; height: 24px;">42512063420</td><td style="width: 20%; height: 24px;">53.06</td><td style="width: 19.723%; height: 24px;">4233.081</td><td style="width: 19.3314%; height: 24px;">2224.187</td></tr></tbody></table>								</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-636f9cc elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="636f9cc" data-element_type="section">
						<div class="elementor-container elementor-column-gap-default">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a9b8323" data-id="a9b8323" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-300085f elementor-widget elementor-widget-image" data-id="300085f" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="608" height="401" src="https://nanovea.com/wp-content/uploads/2023/06/Stone-Flooring-Wear-Rate.jpg" class="attachment-large size-large wp-image-22345" alt="taxa de desgaste do piso de pedra versus distância" />															</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-00f4773" data-id="00f4773" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-83b9896 elementor-widget elementor-widget-image" data-id="83b9896" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="606" height="401" src="https://nanovea.com/wp-content/uploads/2023/06/Stone-Floor-Wear-Rate-Test.jpg" class="attachment-large size-large wp-image-22341" alt="Gráfico de taxa de desgaste instantâneo de pisos de pedra" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<div class="elementor-element elementor-element-402cd58 elementor-widget elementor-widget-text-editor" data-id="402cd58" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 6:</span><span class="fontstyle0" style="color: #000000;"> Taxa de desgaste versus distância total percorrida (esquerda)<br />e taxa de desgaste instantâneo versus ciclo de teste (direita) para pisos de pedra.</span></p>								</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-98a260b elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="98a260b" data-element_type="section">
						<div class="elementor-container elementor-column-gap-default">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-aa3e36e" data-id="aa3e36e" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-2fe2f63 elementor-widget elementor-widget-image" data-id="2fe2f63" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="579" height="325" src="https://nanovea.com/wp-content/uploads/2023/06/Stone-Flooring-Wear-Test-COF.jpg" class="attachment-large size-large wp-image-22346" alt="teste tribológico de desgaste do piso" />															</div>
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															<img loading="lazy" decoding="async" width="590" height="397" src="https://nanovea.com/wp-content/uploads/2023/06/Stone-Floor-QC-Wear-Track.jpg" class="attachment-large size-large wp-image-22340" alt="piso de pedra perfil 3d da pista de desgaste" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 7:</span><span class="fontstyle0" style="color: #000000;"> Gráfico COF e visualização 3D do rastro de desgaste do teste #7 em piso de pedra.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="1024" height="214" src="https://nanovea.com/wp-content/uploads/2023/06/Stone-Floor-Wear-Tester.jpg" class="attachment-large size-large wp-image-22343" alt="mapeamento de desgaste progressivo do piso de pedra extraído do perfil" />															</div>
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															<img loading="lazy" decoding="async" width="1024" height="277" src="https://nanovea.com/wp-content/uploads/2023/06/Stone-Flooring-QC-Testing.jpg" class="attachment-large size-large wp-image-22344" alt="perfil extraído do piso de pedra profundidade e altura máximas área do furo e do pico" />															</div>
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															<img loading="lazy" decoding="async" width="1024" height="306" src="https://nanovea.com/wp-content/uploads/2023/06/Progressive-Tribology-Mapping-of-Flooring-35.jpg" class="attachment-large size-large wp-image-22336" alt="teste tribológico de pisos" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 8:</span><span class="fontstyle0" style="color: #000000;"> Análise de seção transversal da trilha de desgaste de pedra do teste #7.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="824" height="929" src="https://nanovea.com/wp-content/uploads/2023/06/Progressive-Tribology-Mapping-of-Flooring-36.jpg" class="attachment-large size-large wp-image-22337" alt="Análise de volume de mapeamento de desgaste progressivo de pisos de madeira" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 9:</span><span class="fontstyle0" style="color: #000000;"> Análise de volume e área da trilha de desgaste no teste de amostra de pedra #7.</span></p>								</div>
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									<p style="text-align: center;"><a href="https://www.youtube.com/watch?v=3VW3AtMbzls"><br /><span style="color: #1b96cf; font-size: 1.5em;">Para obter detalhes completos sobre os resultados, clique aqui.</span><br /></a></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">DISCUSSÃO</h2>				</div>
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									A taxa de desgaste instantânea é calculada com a seguinte equação:
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															<img loading="lazy" decoding="async" width="150" height="44" src="https://nanovea.com/wp-content/uploads/2023/06/Progressive-Tribology-Mapping-of-Flooring-37.jpg" class="attachment-thumbnail size-thumbnail wp-image-22338" alt="mapeamento do desgaste progressivo da fórmula do piso" />															</div>
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									<p>Onde V é o volume de um furo, N é a carga e X é a distância total, essa equação descreve a taxa de desgaste entre os ciclos de teste. A taxa de desgaste instantânea pode ser usada para identificar melhor as alterações na taxa de desgaste durante o teste.</p><p>Ambas as amostras têm comportamentos de desgaste muito diferentes. Com o tempo, o piso de madeira começa com uma alta taxa de desgaste, mas cai rapidamente para um valor menor e estável. No caso do piso de pedra, a taxa de desgaste parece começar em um valor baixo e tende a um valor mais alto ao longo dos ciclos. A taxa de desgaste instantâneo também apresenta pouca consistência. Não se sabe ao certo o motivo específico da diferença, mas pode ser devido à estrutura das amostras. O piso de pedra parece consistir de partículas soltas semelhantes a grãos, que se desgastariam de forma diferente em comparação com a estrutura compacta da madeira. Testes e pesquisas adicionais seriam necessários para determinar a causa desse comportamento de desgaste.</p><p>Os dados do coeficiente de atrito (COF) parecem concordar com o comportamento de desgaste observado. O gráfico do COF do piso de madeira parece consistente ao longo dos ciclos, complementando sua taxa de desgaste constante. Para o piso de pedra, o COF médio aumenta ao longo dos ciclos, da mesma forma que a taxa de desgaste também aumenta com os ciclos. Também há mudanças aparentes na forma dos gráficos de atrito, sugerindo mudanças na forma como a bola está interagindo com a amostra de pedra. Isso é mais evidente no ciclo 2 e no ciclo 4.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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									<p>O tribômetro NANOVEA T2000 demonstra sua capacidade de realizar o mapeamento progressivo do desgaste, analisando a taxa de desgaste entre duas amostras diferentes de pisos. Pausar o teste de desgaste contínuo e escanear a superfície com o NANOVEA 3D Non-Contact Profilometer fornece informações valiosas sobre o comportamento de desgaste do material ao longo do tempo.</p><p>O tribômetro NANOVEA T2000 com o perfilômetro 3D sem contato integrado fornece uma ampla variedade de dados, incluindo dados de COF (coeficiente de atrito), medições de superfície, leituras de profundidade, visualização de superfície, perda de volume, taxa de desgaste e muito mais. Esse conjunto abrangente de informações permite que os usuários obtenham uma compreensão mais profunda das interações entre o sistema e a amostra. Com sua carga controlada, alta precisão, facilidade de uso, alta carga, ampla faixa de velocidade e módulos ambientais adicionais, o Tribômetro NANOVEA T2000 leva a tribologia para o próximo nível.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Tem um aplicativo semelhante?</h2>				</div>
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				</div><p>The post <a href="https://nanovea.com/pt/mapeamento-de-desgaste-progressivo-de-pisos-usando-tribometro/">Progressive Wear Mapping of Flooring using Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Análise mecânica dinâmica da cortiça usando nanoindentação</title>
		<link>https://nanovea.com/pt/analise-mecanica-dinamica-da-cortica-utilizando-nanoindentacao/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=dynamic-mechanical-analysis-of-cork-using-nanoindentation</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Quarta-feira, 17 de maio de 2023 14:15:13 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Indentation | Hardness and Elastic]]></category>
		<category><![CDATA[Indentation | Loss and Storage]]></category>
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		<guid ispermalink="false">https://nanovea.com/?p=22101</guid>

					<description><![CDATA[<p>ANÁLISE MECÂNICA DINÂMICA DA CORTIÇA USANDO NANOINDENTAÇÃO Preparado por FRANK LIU INTRODUÇÃO A Análise Mecânica Dinâmica (DMA) é uma técnica poderosa usada para investigar as propriedades mecânicas dos materiais. Nesta aplicação, nosso foco é a análise da cortiça, um material amplamente utilizado nos processos de vedação e envelhecimento do vinho. A cortiça, obtida da casca da árvore [...]</p>
<p>The post <a href="https://nanovea.com/pt/analise-mecanica-dinamica-da-cortica-utilizando-nanoindentacao/">Dynamic Mechanical Analysis of Cork Using Nanoindentation</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="22101" class="elementor elementor-22101" data-elementor-post-type="post">
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					<h1 class="elementor-heading-title elementor-size-default">ANÁLISE MECÂNICA DINÂMICA</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">DE CORTIÇA USANDO NANOINDENTAÇÃO
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															<img loading="lazy" decoding="async" width="768" height="217" src="https://nanovea.com/wp-content/uploads/2023/05/Dynamic-Mechanical-Analysis-of-Cork-with-Nanoindentation.jpg" class="attachment-medium_large size-medium_large wp-image-22111" alt="" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Preparado por</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">LIU FRANCA</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
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									<p>A Análise Mecânica Dinâmica (DMA) é uma técnica poderosa usada para investigar as propriedades mecânicas dos materiais. Nesta aplicação, nos concentramos na análise da cortiça, um material amplamente utilizado nos processos de vedação e envelhecimento do vinho. A cortiça, obtida da casca do carvalho Quercus suber, apresenta estruturas celulares distintas que proporcionam propriedades mecânicas semelhantes às dos polímeros sintéticos. Em um eixo, a cortiça tem estrutura de favo de mel. Os outros dois eixos são estruturados em múltiplos prismas retangulares. Isso confere à cortiça propriedades mecânicas diferentes, dependendo da orientação que está sendo testada.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">IMPORTÂNCIA DO TESTE DE ANÁLISE MECÂNICA DINÂMICA (DMA) NA AVALIAÇÃO DAS PROPRIEDADES MECÂNICAS DA CORTIÇA</h2>				</div>
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									<p>A qualidade das rolhas depende muito de suas propriedades mecânicas e físicas, que são cruciais para sua eficácia na vedação do vinho. Entre os principais fatores que determinam a qualidade da cortiça estão a flexibilidade, o isolamento, a resiliência e a impermeabilidade a gases e líquidos. Ao utilizar o teste de análise mecânica dinâmica (DMA), podemos avaliar quantitativamente as propriedades de flexibilidade e resiliência das rolhas, fornecendo um método confiável de avaliação.</p><p>O testador mecânico PB1000 da NANOVEA no <a href="https://nanovea.com/nano-indentation-tester/">Nanoindentação</a> O modo DMA permite a caracterização dessas propriedades, especificamente o módulo de Young, o módulo de armazenamento, o módulo de perda e o tan delta (tan (δ)). O teste de DMA também permite a coleta de dados valiosos sobre mudança de fase, dureza, tensão e deformação do material de cortiça. Por meio dessas análises abrangentes, obtemos insights mais profundos sobre o comportamento mecânico das rolhas e sua adequação para aplicações de vedação de vinhos.</p>								</div>
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									<p style="text-align: left;">OBJETIVO DA MEDIÇÃO</p>								</div>
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									<p>Neste estudo, realizamos uma análise dinâmico-mecânica (DMA) em quatro rolhas de cortiça usando o NANOVEA PB1000 Mechanical Tester no modo de nanoindentação. A qualidade das rolhas de cortiça é rotulada como: 1 - Flor, 2 - Primeira, 3 - Colmatada, 4 - Borracha sintética. Os testes de indentação DMA foram realizados nas direções axial e radial para cada rolha de cortiça. Ao analisar a resposta mecânica das rolhas de cortiça, nosso objetivo foi obter informações sobre seu comportamento dinâmico e avaliar seu desempenho sob diferentes orientações.</p>								</div>
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									<p style="text-align: left;">NANOVEA</p>								</div>
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									<p style="text-align: left;">PB1000</p>								</div>
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									<span class="elementor-button-text">SAIBA MAIS</span>
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																<a href="https://nanovea.com/instruments/pb1000/">
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					<h2 class="elementor-heading-title elementor-size-default">PARÂMETROS DE TESTE</h2>				</div>
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									<table style="border-collapse: collapse; width: 102.375%;"><tbody><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">FORÇA MÁXIMA</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>75 mN</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TAXA DE CARREGAMENTO</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>150 mN/min</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TAXA DE DESLOCAÇÃO</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>150 mN/min</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">AMPLITUDE</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>5 mN</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">FREQÜÊNCIA</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>1 Hz</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CREEP</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>60 s</strong></em></td></tr></tbody></table>								</div>
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									<p><span style="line-height: 1.2em; color: #ff; text-align: center; text-transform: uppercase; font-weight: bold; font-size: 1.2em; font-style: italic;">tipo indenter</span></p><p><span style="line-height: 1.2em; color: #1b96cf; text-align: center; font-weight: bold; font-size: 2em; font-style: italic;">Bola</span></p><p><span style="line-height: 1.2em; color: #1b96cf; text-align: center; font-weight: bold; font-size: 1.5em; font-style: italic;">51200 Aço</span></p><p><span style="line-height: 1.2em; color: #ff; text-align: center; font-weight: bold; background-color: #fff; font-size: 1.5em; font-style: italic;">3 mm de diâmetro</span></p>								</div>
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															<img loading="lazy" decoding="async" width="883" height="440" src="https://nanovea.com/wp-content/uploads/2023/05/Cork-Material-Testing.jpg" class="attachment-large size-large wp-image-22104" alt="" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS</h2>				</div>
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									<p style="text-align: left;">Nas tabelas e gráficos abaixo, o módulo de Young, o módulo de armazenamento, o módulo de perda e o tan delta são comparados entre cada amostra e orientação.</p><p style="text-align: left;"><b><i>Módulo de Young: </i></b>Stiﬀness; valores altos indicam stiﬀ, valores baixos indicam ﬂexible.</p><p style="text-align: left;"><b><i>Módulo de armazenamento: </i></b>Resposta elástica; energia armazenada no material.</p><p style="text-align: left;"><b><i>Módulo de perda: </i></b>Resposta viscosa; energia perdida devido ao calor.</p><p style="text-align: left;"><b><i>Tan (δ): </i></b>Amortecimento; valores altos indicam mais amortecimento.</p><p><em><strong style="color: #1b96cf;">ORIENTAÇÃO AXIAL</strong></em></p><table style="border-collapse: collapse; width: 98.7212%; height: 8px;"><tbody><tr><td style="width: 20%;"><b><i>Rolha</i></b></td><td style="width: 20%;"><b><i>MÓDULO DE YOUNG</i></b></td><td style="width: 20%;"><b><i>MÓDULO DE ARMAZENAMENTO</i></b></td><td style="width: 20%;"><b><i>MÓDULO PERDIDO</i></b></td><td style="width: 20%;"><b><i>TAN</i></b></td></tr><tr><td style="width: 20%;"><b><i>#</i></b></td><td style="width: 20%;"><b><i>(MPa)</i></b></td><td style="width: 20%;"><b><i>(MPa)</i></b></td><td style="width: 20%;"><b><i>(MPa)</i></b></td><td style="width: 20%;"><b><i>(δ)</i></b></td></tr><tr><td style="width: 20%;">1</td><td style="width: 20%;">22.5675</td><td style="width: 20%;">22.27209</td><td style="width: 20%;">3.624947</td><td style="width: 20%;">0.162964</td></tr><tr><td style="width: 20%;">2</td><td style="width: 20%;">18.54664</td><td style="width: 20%;">18.27153</td><td style="width: 20%;">3.162349</td><td style="width: 20%;">0.17409</td></tr><tr><td style="width: 20%;">3</td><td style="width: 20%;">23.75381</td><td style="width: 20%;">23.47267</td><td style="width: 20%;">3.617819</td><td style="width: 20%;">0.154592</td></tr><tr><td style="width: 20%;">4</td><td style="width: 20%;">23.6972</td><td style="width: 20%;">23.58064</td><td style="width: 20%;">2.347008</td><td style="width: 20%;">0.099539</td></tr></tbody></table><p><br /><br /><em><strong style="color: #1b96cf;">ORIENTAÇÃO RADIAL</strong></em></p><table style="border-collapse: collapse; width: 98.7212%; height: 8px;"><tbody><tr><td style="width: 20%;"><b><i>Rolha</i></b></td><td style="width: 20%;"><b><i>MÓDULO DE YOUNG</i></b></td><td style="width: 20%;"><b><i>MÓDULO DE ARMAZENAMENTO</i></b></td><td style="width: 20%;"><b><i>MÓDULO PERDIDO</i></b></td><td style="width: 19.0544%;"><b><i>TAN</i></b></td></tr><tr><td style="width: 20%;"><b><i>#</i></b></td><td style="width: 20%;"><b><i>(MPa)</i></b></td><td style="width: 20%;"><b><i>(MPa)</i></b></td><td style="width: 20%;"><b><i>(MPa)</i></b></td><td style="width: 19.0544%;"><b><i>(δ)</i></b></td></tr><tr><td style="width: 20%;">1</td><td style="width: 20%;">24.78863</td><td style="width: 20%;">24.56542</td><td style="width: 20%;">3.308224</td><td style="width: 19.0544%;">0.134865</td></tr><tr><td style="width: 20%;">2</td><td style="width: 20%;">26.66614</td><td style="width: 20%;">26.31739</td><td style="width: 20%;">4.286216</td><td style="width: 19.0544%;">0.163006</td></tr><tr><td style="width: 20%;">3</td><td style="width: 20%;">44.07867</td><td style="width: 20%;">43.61426</td><td style="width: 20%;">6.365979</td><td style="width: 19.0544%;">0.146033</td></tr><tr><td style="width: 20%;">4</td><td style="width: 20%;">28.04751</td><td style="width: 20%;">27.94148</td><td style="width: 20%;">2.435978</td><td style="width: 19.0544%;">0.087173</td></tr></tbody></table>								</div>
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									<p>MÓDULO DE YOUNG</p>								</div>
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															<img loading="lazy" decoding="async" width="681" height="329" src="https://nanovea.com/wp-content/uploads/2023/05/Cork-Testing-Youngs-Modulus.jpg" class="attachment-large size-large wp-image-22108" alt="" />															</div>
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									<p>MÓDULO DE ARMAZENAMENTO</p>								</div>
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															<img loading="lazy" decoding="async" width="681" height="329" src="https://nanovea.com/wp-content/uploads/2023/05/Cork-Testing-Storage-Modulus.jpg" class="attachment-large size-large wp-image-22106" alt="" />															</div>
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									<p>MÓDULO PERDIDO</p>								</div>
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															<img loading="lazy" decoding="async" width="681" height="329" src="https://nanovea.com/wp-content/uploads/2023/05/Cork-Testing-Loss-Modulus.jpg" class="attachment-large size-large wp-image-22105" alt="" />															</div>
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									<p>TAN DELTA</p>								</div>
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															<img loading="lazy" decoding="async" width="681" height="329" src="https://nanovea.com/wp-content/uploads/2023/05/Cork-Testing-Tan-Delta.jpg" class="attachment-large size-large wp-image-22107" alt="" />															</div>
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									<p>Entre as rolhas de cortiça, o módulo de Young não é muito diferente quando testado na orientação axial. Apenas as rolhas #2 e #3 apresentaram uma diferença aparente no módulo de Young entre as direções radial e axial. Como resultado, o módulo de armazenamento e o módulo de perda também serão maiores na direção radial do que na direção axial. A rolha #4 apresenta características semelhantes às das rolhas de cortiça natural, exceto no módulo de perda. Isso é bastante interessante, pois significa que a cortiça natural tem uma propriedade mais viscosa do que o material de borracha sintética.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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									<p>A NANOVEA <a href="https://nanovea.com/mechanical-testers/">Testador Mecânico</a> no modo Nano Scratch Tester permite a simulação de muitas falhas reais de revestimentos de pintura e revestimentos duros. Ao aplicar cargas crescentes de forma controlada e monitorada de perto, o instrumento permite identificar em que carga ocorrem falhas. Isso pode então ser usado como uma forma de determinar valores quantitativos de resistência a arranhões. Sabe-se que o revestimento testado, sem desgaste, apresenta uma primeira fissura a cerca de 22 mN. Com valores mais próximos de 5 mN, fica claro que a volta de 7 anos degradou a pintura.</p>
<p>A compensação do perfil original permite obter a profundidade corrigida durante o arranhão e também medir a profundidade residual após o arranhão. Isso fornece informações adicionais sobre o comportamento plástico versus elástico do revestimento sob carga crescente. Tanto as rachaduras quanto as informações sobre deformação podem ser de grande utilidade para melhorar o revestimento duro. Os desvios padrão muito pequenos também demonstram a reprodutibilidade da técnica do instrumento, o que pode ajudar os fabricantes a melhorar a qualidade de seu revestimento/pintura e a estudar os efeitos das intempéries.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Tem um aplicativo semelhante?</h2>				</div>
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									<span class="elementor-button-text">CONVERSE COM UM ESPECIALISTA AGORA</span>
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									<span class="elementor-button-text">OBTENHA PREÇOS E DETALHES RAPIDAMENTE</span>
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				</div><p>The post <a href="https://nanovea.com/pt/analise-mecanica-dinamica-da-cortica-utilizando-nanoindentacao/">Dynamic Mechanical Analysis of Cork Using Nanoindentation</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Teste Nano Scratch &amp; Mar de tinta em substrato de metal</title>
		<link>https://nanovea.com/pt/ensaio-de-nano-risco-mar-de-dor-num-substrato-metalico/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=nano-scratch-mar-testing-of-paint-on-metal-substrate</link>
					<comments>https://nanovea.com/pt/ensaio-de-nano-risco-mar-de-dor-num-substrato-metalico/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Ter, 02 de maio de 2023 15:12:43 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Adhesive Failure]]></category>
		<category><![CDATA[Scratch Testing | Cohesive Failure]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=22041</guid>

					<description><![CDATA[<p>Nano Scratch &amp; Mar Testing of Paint on Metal Substrate Preparado por SUSANA CABELLO INTRODUÇÃO A tinta com ou sem revestimento duro é um dos revestimentos mais comumente usados. Nós a vemos em carros, paredes, eletrodomésticos e em praticamente qualquer coisa que precise de algum revestimento protetor ou simplesmente para fins estéticos. As tintas que são [...]</p>
<p>The post <a href="https://nanovea.com/pt/ensaio-de-nano-risco-mar-de-dor-num-substrato-metalico/">Nano Scratch &#038; Mar Testing of Paint on Metal Substrate</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="22041" class="elementor elementor-22041" data-elementor-post-type="post">
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					<h1 class="elementor-heading-title elementor-size-default">Teste Nano Scratch &amp; Mar</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">de tinta em substrato metálico</h2>				</div>
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															<img loading="lazy" decoding="async" width="768" height="217" src="https://nanovea.com/wp-content/uploads/2023/05/Nano-Scratch-Testing-of-Paint.jpg" class="attachment-medium_large size-medium_large wp-image-22051" alt="" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Preparado por</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">SUSANA CABELLO</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
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									<p>A tinta com ou sem revestimento duro é um dos revestimentos mais comumente usados. Nós a vemos em carros, paredes, eletrodomésticos e em praticamente qualquer coisa que precise de algum revestimento protetor ou simplesmente para fins estéticos. As tintas destinadas à proteção do substrato subjacente geralmente contêm produtos químicos que evitam que a tinta pegue fogo ou simplesmente que ela perca a cor ou rache. Muitas vezes, a tinta usada para fins estéticos vem em várias cores, mas pode não ser necessariamente destinada à proteção do substrato ou a uma longa vida útil.</p><p>No entanto, toda tinta sofre algum desgaste com o tempo. O desgaste da tinta muitas vezes pode alterar as propriedades que os fabricantes pretendiam que ela tivesse. Ela pode lascar mais rapidamente, descascar com o calor, perder a cor ou rachar. As diferentes mudanças de propriedade da tinta ao longo do tempo são a razão pela qual os fabricantes oferecem uma seleção tão ampla. As tintas são feitas sob medida para atender a diferentes requisitos de clientes individuais.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">IMPORTÂNCIA DO TESTE DE NANO-RISCOS PARA O CONTROLE DE QUALIDADE</h2>				</div>
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									<p>Uma das principais preocupações dos fabricantes de tintas é a capacidade do produto de resistir a rachaduras. Quando a tinta começa a rachar, ela deixa de proteger o substrato em que foi aplicada e, portanto, não satisfaz o cliente. Por exemplo, se um galho atingir a lateral de um carro e imediatamente depois a tinta começar a lascar, os fabricantes da tinta perderão o negócio devido à má qualidade da tinta. A qualidade da tinta é muito importante porque, se o metal sob a tinta ficar exposto, ele pode começar a enferrujar ou corroer devido à nova exposição.</p><p> </p><p>Razões como essa se aplicam a vários outros espectros, como suprimentos domésticos e de escritório e eletrônicos, brinquedos, ferramentas de pesquisa e muito mais. Embora a tinta possa ser resistente a rachaduras quando aplicada pela primeira vez em revestimentos de metal, as propriedades podem mudar com o tempo, quando ocorre algum desgaste na amostra. Por isso, é muito importante que as amostras de tinta sejam testadas em seu estágio de intemperismo. Embora as rachaduras sob alta carga de estresse possam ser inevitáveis, o fabricante deve prever o grau de enfraquecimento das mudanças ao longo do tempo e a profundidade do arranhão afetado para oferecer aos consumidores os melhores produtos possíveis.</p>								</div>
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									<p style="text-align: left;">OBJETIVO DA MEDIÇÃO</p>								</div>
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									<p>Devemos simular o processo de arranhar de forma controlada e monitorada para observar os efeitos do comportamento da amostra. Nesse aplicativo, o testador mecânico NANOVEA PB1000 no modo Nano Scratch Testing é usado para medir a carga necessária para causar falha em uma amostra de tinta de 30-50 μm de espessura com aproximadamente 7 anos de idade em um substrato de metal.</p>								</div>
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									<p><em>Um estilete com ponta de diamante de 2 μm é usado em uma carga progressiva que varia de 0,015 mN a 20,00 mN para riscar o revestimento. Realizamos uma varredura antes e depois da pintura com carga de 0,2 mN para determinar o valor da profundidade real do arranhão. A profundidade real analisa a deformação plástica e elástica da amostra durante o teste, enquanto a varredura posterior analisa apenas a deformação plástica do arranhão. O ponto em que o revestimento falha por rachadura é considerado o ponto de falha. Usamos a ASTMD7187 como guia para determinar nossos parâmetros de teste.</em></p><p><em> </em></p><p><em>Podemos concluir que o fato de termos usado uma amostra desgastada, portanto, testando uma amostra de tinta em seu estágio mais fraco, nos apresentou pontos de falha menores.</em></p><p><em> </em></p><p><em>Cinco testes foram realizados nessa amostra para</em></p><p><em>determinar as cargas críticas de falha exatas.</em></p>								</div>
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									<p style="text-align: left;">NANOVEA</p>								</div>
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									<p style="text-align: left;">PB1000</p>								</div>
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									<span class="elementor-button-text">SAIBA MAIS</span>
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																<a href="https://nanovea.com/instruments/pb1000/">
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					<h2 class="elementor-heading-title elementor-size-default">PARÂMETROS DE TESTE</h2>				</div>
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									<p style="text-align: center;"><b><i>seguintes</i></b><b><i> ASTM D7027</i></b></p>								</div>
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									<p style="text-align: left;">A superfície de um padrão de rugosidade foi escaneada usando um NANOVEA ST400 equipado com um sensor de alta velocidade que gera uma linha brilhante de 192 pontos, conforme mostrado na FIGURA 1. Esses 192 pontos escaneiam a superfície da amostra ao mesmo tempo, o que resulta em um aumento significativo da velocidade de escaneamento.</p>								</div>
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				<div class="elementor-widget-container">
									<table style="border-collapse: collapse; width: 102.375%;">
<tbody>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TIPO CARREGADO</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Progressivo</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARGA INICIAL</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0,015 mN</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARGA FINAL</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>20 mN</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TAXA DE CARREGAMENTO</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>20 mN/min</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">COMPRIMENTO DE SCRATCH</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>1,6 mm</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">VELOCIDADE DE RASTREAMENTO, dx/dt</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>1.601 mm/min</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARREGAMENTO DE PRÉ-ESCANEAMENTO</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0,2 mN</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CARGA PÓS-SCAN</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0,2 mN</strong></em></td>
</tr>
</tbody>
</table>								</div>
				</div>
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				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="778" height="650" src="https://nanovea.com/wp-content/uploads/2023/05/Nano-Scrach-Harndess-Tester.jpg" class="attachment-large size-large wp-image-22072" alt="Indenter cônico 90° Cone 2 µm de raio de ponta" />															</div>
				</div>
					</div>
		</div>
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			<div class="elementor-widget-wrap elementor-element-populated">
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				<div class="elementor-widget-container">
									<p><span style="line-height: 1.2em; color: #ff; text-align: center; text-transform: uppercase; font-weight: bold; font-size: 1.2em; font-style: italic;">tipo indenter</span><br /><br /><span style="line-height: 1.2em; color: #1b96cf; text-align: center; font-weight: bold; font-size: 2em; font-style: italic;">Cônico</span><br /><br /><span style="line-height: 1.2em; color: #1b96cf; text-align: center; font-weight: bold; font-size: 1.5em; font-style: italic;">Cone de diamante 90°</span><br /><br /><span style="line-height: 1.2em; color: #ff; text-align: center; font-weight: bold; background-color: #fff; font-size: 1.5em; font-style: italic;">Raio da ponta de 2 µm</span></p>								</div>
				</div>
					</div>
		</div>
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			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-034a2a2 elementor-widget elementor-widget-image" data-id="034a2a2" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="301" height="301" src="https://nanovea.com/wp-content/uploads/2023/05/Nano-Scratch-on-Paint-Testing.jpg" class="attachment-large size-large wp-image-22047" alt="Indenter cônico Cone de 90° de diamante Raio da ponta de 2 µm" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-f562115 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="f562115" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS</h2>				</div>
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									<p style="text-align: left;">Esta seção apresenta os dados coletados sobre as falhas durante o teste de arranhão. A primeira seção descreve as falhas observadas no teste de arranhão e define as cargas críticas que foram relatadas. A próxima parte contém uma tabela de resumo das cargas críticas para todas as amostras e uma representação gráfica. A última parte apresenta resultados detalhados para cada amostra: as cargas críticas para cada arranhão, micrografias de cada falha e o gráfico do teste.</p>								</div>
				</div>
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									<p><strong><em>FALHAS OBSERVADAS E DEFINIÇÃO DE CARGAS CRÍTICAS</em></strong></p>								</div>
				</div>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-94a28d2 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="94a28d2" data-element_type="section">
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									<p><strong><em>FALHA CRÍTICA:</em></strong></p>								</div>
				</div>
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									<p><strong><em>DANOS INICIAIS</em></strong></p>								</div>
				</div>
				<div class="elementor-element elementor-element-d9ded9d elementor-widget elementor-widget-text-editor" data-id="d9ded9d" data-element_type="widget" data-widget_type="text-editor.default">
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									<p>Esse é o primeiro ponto em que o dano é observado ao longo da trilha de arranhões.</p>								</div>
				</div>
					</div>
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				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-db7cc34" data-id="db7cc34" data-element_type="column">
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				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="297" height="238" src="https://nanovea.com/wp-content/uploads/2023/05/Nanoscratch-Testing-NANOVEA.jpg" class="attachment-large size-large wp-image-22042" alt="nano arranhão falha crítica dano inicial" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-inner-section elementor-element elementor-element-6a3b44c elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="6a3b44c" data-element_type="section">
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						<div class="elementor-element elementor-element-84ab3b3 elementor-widget elementor-widget-text-editor" data-id="84ab3b3" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p><strong><em>FALHA CRÍTICA:</em></strong></p>								</div>
				</div>
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									<p><strong><em>DANO TOTAL</em></strong></p>								</div>
				</div>
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				<div class="elementor-widget-container">
									<p>Nesse ponto, o dano é mais significativo, onde a pintura está lascando e rachando ao longo da trilha de arranhões.</p>								</div>
				</div>
					</div>
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				<div class="elementor-widget-container">
															<img loading="lazy" decoding="async" width="297" height="266" src="https://nanovea.com/wp-content/uploads/2023/05/Nano-Scratch-Testing-NANOVEA.jpg" class="attachment-large size-large wp-image-22050" alt="nano arranhão falha crítica dano completo" />															</div>
				</div>
					</div>
		</div>
					</div>
		</section>
					</div>
		</div>
					</div>
		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-5f1efa4 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="5f1efa4" data-element_type="section">
						<div class="elementor-container elementor-column-gap-no">
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									<p><strong><em>RESULTADOS DETALHADOS</em></strong></p>								</div>
				</div>
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									<p><strong><em>* Valores de falha obtidos no ponto de rachadura do substrato.</em></strong></p>								</div>
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									<table style="border-collapse: collapse; width: 104.762%; height: 228px;">
<tbody>
<tr style="height: 36px;">
<td style="width: 101.482%; text-align: center; font-size: 1.5em; height: 36px;" colspan="3"><em><strong style="color: #1b96cf;">CARGAS CRÍTICAS</strong></em></td>
</tr>
<tr style="height: 72px;">
<td style="width: 23.333%;  text-align: center; height: 72px;"><em><strong style="color: #1b96cf;">SCRATCH</strong></em></td>
<td style="width: 33.3333%; text-align: CENTER; height: 72px;"><em><strong style="color: #1b96cf;">DANO INICIAL [mN]</strong></em></td>
<td style="width: 44.8155%; text-align: CENTER; height: 72px;"><em><strong style="color: #1b96cf;">DANO COMPLETO [µm]</strong></em></td>
</tr>
<tr style="height: 24px;">
<td style="width: 23.333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">1</strong></em></td>
<td style="width: 33.3333%;  text-align: center;; height: 24px;"><em><strong style="color: #ff;">14.513</strong></em></td>
<td style="width: 43.3333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">4.932</strong></em></td>
</tr>
<tr style="height: 24px;">
<td style="width: 23.333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">2</strong></em></td>
<td style="width: 33.3333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">3.895</strong></em></td>
<td style="width: 43.3333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">4.838</strong></em></td>
</tr>
<tr style="height: 24px;">
<td style="width: 23.333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">3</strong></em></td>
<td style="width: 33.3333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">3.917</strong></em></td>
<td style="width: 43.3333%; text-align: center; height: 24px;"><em><strong style="color: #ff;">4.930</strong></em></td>
</tr>
<tr>
<td></td>
</tr>
<tr style="height: 24px;">
<td style="width: 23.333%;  text-align: center; height: 24px;"><em><strong style="color: #1b96cf;">MÉDIA</strong></em></td>
<td style="width: 33.3333%; text-align: center; height: 24px;"><em><strong style="color: #1b96cf;">3.988</strong></em></td>
<td style="width: 44.8155%; text-align: center; height: 24px;"><em><strong style="color: #1b96cf;">4.900</strong></em></td>
</tr>
<tr style="height: 24px;">
<td style="width: 23.333%; text-align: center; height: 24px;"><em><strong style="color: #1b96cf;">STD DEV</strong></em></td>
<td style="width: 33.3333%; text-align: center; height: 24px;"><em><strong style="color: #1b96cf;">0.143</strong></em></td>
<td style="width: 44.8155%; text-align: center; height: 24px;"><em><strong style="color: #1b96cf;">0.054</strong></em></td>
</tr>
</tbody>
</table>								</div>
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															<img loading="lazy" decoding="async" width="1024" height="59" src="https://nanovea.com/wp-content/uploads/2023/05/Micrograph-of-Full-Scratch-Testing.jpg" class="attachment-large size-large wp-image-22070" alt="Micrografia de arranhão total do teste de nano arranhão (ampliação de 1000x)." />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Micrografia do arranhão completo (ampliação de 1000x).</span></p>								</div>
				</div>
					</div>
		</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-0350dcd elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="0350dcd" data-element_type="section">
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						<section class="elementor-section elementor-inner-section elementor-element elementor-element-8633537 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="8633537" data-element_type="section">
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															<img loading="lazy" decoding="async" width="583" height="439" src="https://nanovea.com/wp-content/uploads/2023/05/Nano-Scratch-Tester.jpg" class="attachment-large size-large wp-image-22049" alt="Micrografia do dano inicial do teste de nanoarranhões (ampliação de 1000x)" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Micrografia do dano inicial (ampliação de 1000x).</span></p>								</div>
				</div>
					</div>
		</div>
				<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a1d8def" data-id="a1d8def" data-element_type="column">
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						<div class="elementor-element elementor-element-4fcb6be elementor-widget elementor-widget-image" data-id="4fcb6be" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="586" height="439" src="https://nanovea.com/wp-content/uploads/2023/05/Nano-Scratch-Tester-NANOVEA.jpg" class="attachment-large size-large wp-image-22048" alt="Micrografia de dano completo do teste de nanoarranhões (ampliação de 1000x)." />															</div>
				</div>
				<div class="elementor-element elementor-element-3532980 elementor-widget elementor-widget-text-editor" data-id="3532980" data-element_type="widget" data-widget_type="text-editor.default">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 4:</span><span class="fontstyle0" style="color: #000000;"> Micrografia de dano completo (ampliação de 1000x).</span></p>								</div>
				</div>
					</div>
		</div>
					</div>
		</section>
				<div class="elementor-element elementor-element-eb03769 elementor-widget elementor-widget-image" data-id="eb03769" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="955" height="434" src="https://nanovea.com/wp-content/uploads/2023/05/Friction-Force-and-Coefficient-of-Friction-NANOVEA.jpg" class="attachment-large size-large wp-image-22043" alt="Força de atrito e coeficiente de atrito do teste de nanoarranhões lineares" />															</div>
				</div>
				<div class="elementor-element elementor-element-83822d2 elementor-widget elementor-widget-text-editor" data-id="83822d2" data-element_type="widget" data-widget_type="text-editor.default">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 5:</span><span class="fontstyle0" style="color: #000000;"> Força de atrito e coeficiente de atrito.</span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-da3c0d0 elementor-widget elementor-widget-image" data-id="da3c0d0" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="916" height="424" src="https://nanovea.com/wp-content/uploads/2023/05/Friction-Force-and-COF-on-Paint.jpg" class="attachment-large size-large wp-image-22044" alt="Perfil de superfície de nano arranhões lineares" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 6:</span><span class="fontstyle0" style="color: #000000;"> Perfil da superfície.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="916" height="424" src="https://nanovea.com/wp-content/uploads/2023/05/Nano-Scratch-True-Depth-Residual-Depth.jpg" class="attachment-large size-large wp-image-22071" alt="Profundidade real e profundidade residual do teste de nanoarranhões lineares" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 7:</span><span class="fontstyle0" style="color: #000000;"> Profundidade real e profundidade residual.</span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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									<p>A NANOVEA <a href="https://nanovea.com/mechanical-testers/">Testador Mecânico</a> no <a href="https://nanovea.com/scratch-tester/">Nano Scratch Tester</a> permite a simulação de muitas falhas reais de revestimentos de tinta e revestimentos duros. Ao aplicar cargas crescentes de forma controlada e monitorada de perto, o instrumento permite identificar em que carga ocorrem as falhas. Isso pode ser usado como uma forma de determinar valores quantitativos para a resistência a arranhões. O revestimento testado, sem intempéries, é conhecido por ter uma primeira rachadura em cerca de 22 mN. Com valores mais próximos de 5 mN, fica claro que a pintura foi degradada pela passagem de 7 anos.</p><p>A compensação do perfil original permite obter a profundidade corrigida durante o arranhão e medir a profundidade residual após o arranhão. Isso fornece informações adicionais sobre o comportamento plástico versus elástico do revestimento sob carga crescente. Tanto as rachaduras quanto as informações sobre deformação podem ser de grande utilidade para melhorar o revestimento duro. Os desvios padrão muito pequenos também demonstram a reprodutibilidade da técnica do instrumento, o que pode ajudar os fabricantes a melhorar a qualidade de seu revestimento/pintura e a estudar os efeitos das intempéries.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/pt/ensaio-de-nano-risco-mar-de-dor-num-substrato-metalico/">Nano Scratch &#038; Mar Testing of Paint on Metal Substrate</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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