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	<title>Laboratory Testing Application Notes - NANOVEA : Profilomètres, tribomètres, nanoindeurs et testeurs de rayures avancés pour les essais de matériaux</title>
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	<title>Laboratory Testing Application Notes - NANOVEA : Profilomètres, tribomètres, nanoindeurs et testeurs de rayures avancés pour les essais de matériaux</title>
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		<title>Stent Coating Adhesion and Delamination Analysis Using Nano Scratch Testing</title>
		<link>https://nanovea.com/fr/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/fr/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/fr/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/fr">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">Research &amp; Experimental Testing</p>				</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">Introduction</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"> En savoir plus sur <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/">NANOVEA PB1000 Essai mécanique</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;">Testeur Méchanique</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Conditions d'essai</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>Progressif</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>Conique</td></tr><tr><td>Indenter material (tip)</td><td>Diamant</td></tr><tr><td>Rayon de la pointe du pénétrateur</td><td>20 µm</td></tr><tr><td>Température</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;">Tableau 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>Progressif</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>Taux de chargement</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>Diamant</td>
</tr>
<tr>
<td>Rayon de la pointe du pénétrateur</td>
<td>5 µm</td>
</tr>
</tbody>
</table>
</div>								</div>
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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">Résultats et discussion</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>
				</div>
				<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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				<div class="elementor-element elementor-element-31f605b elementor-widget elementor-widget-text-editor" data-id="31f605b" 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;">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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				<div class="elementor-element elementor-element-8c1a0ec elementor-widget elementor-widget-text-editor" data-id="8c1a0ec" data-element_type="widget" data-widget_type="text-editor.default">
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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">Conclusion</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">Références</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/fr/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/fr">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/fr/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/fr/dental-surface-roughness-measurement-3d-tooth-topography/">Dental Surface Roughness Measurement &#038; 3D Tooth Topography</a> appeared first on <a href="https://nanovea.com/fr">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">Préparé par</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">Introduction</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"> En savoir plus sur <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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		</section>
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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">Dans cette application, le <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 />Profilomètre optique</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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									<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">Paramètres de mesure</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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									<div class="measurement-table-wrapper"><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></tr><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>Average (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><tr><td>Acquisition Mode</td><td>Single Frequency</td><td>Single Frequency</td><td>Double 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></div>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Optical Profilometry Results</h2>				</div>
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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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															<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>Hauteur racine carrée moyenne</td></tr><tr><td class="param-code">Ssk</td><td>-0.102</td><td> </td><td>Skewness</td></tr><tr><td class="param-code">UGS</td><td>3.715</td><td> </td><td>Kurtosis</td></tr><tr><td class="param-code">Sp</td><td>18.861</td><td>µm</td><td>Hauteur maximale du pic</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>Hauteur maximale</td></tr><tr><td class="param-code">Sa</td><td>1.888</td><td>µm</td><td>Hauteur moyenne arithmétique</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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					<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> Aucun</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> Aucun</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="elementor-element elementor-element-7829cdd elementor-widget elementor-widget-text-editor" data-id="7829cdd" data-element_type="widget" data-widget_type="text-editor.default">
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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> Aucun</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> Aucun</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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				<section class="elementor-section elementor-top-section elementor-element elementor-element-683f81e elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="683f81e" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">Conclusion</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">Références</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>
				</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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				</div><p>The post <a href="https://nanovea.com/fr/dental-surface-roughness-measurement-3d-tooth-topography/">Dental Surface Roughness Measurement &#038; 3D Tooth Topography</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Test de résistance aux rayures des protections d'écran de téléphone</title>
		<link>https://nanovea.com/fr/test-de-resistance-aux-rayures-des-protections-decran-de-telephone/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=scratch-resistance-testing-of-phone-screen-protectors</link>
					<comments>https://nanovea.com/fr/test-de-resistance-aux-rayures-des-protections-decran-de-telephone/#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>Test de résistance aux rayures des protections d'écran de téléphone Préparé par Stacey Pereira, Jocelyn Esparza et Pierre Leroux Comprendre la résistance aux rayures des protections d'écran de téléphone Les revêtements de protection des écrans de téléphone jouent un rôle essentiel dans la résistance aux rayures, la force d'adhérence et la durabilité à long terme. Avec le temps, les rayures, les microfissures et la délamination du revêtement peuvent réduire la clarté optique et la fiabilité, en particulier [...]</p>
<p>The post <a href="https://nanovea.com/fr/test-de-resistance-aux-rayures-des-protections-decran-de-telephone/">Scratch Resistance Testing of Phone Screen Protectors</a> appeared first on <a href="https://nanovea.com/fr">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">
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					<h1 class="elementor-heading-title elementor-size-default">Test de résistance aux rayures des protections d'écran de téléphone</h1>				</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">Préparé par</p>				</div>
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				<div class="elementor-widget-container">
					<p class="elementor-heading-title elementor-size-default">Stacey Pereira, Jocelyn Esparza et Pierre Leroux</p>				</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">Comprendre la résistance aux rayures des protecteurs d'écran de téléphone</h2>				</div>
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									<p data-start="327" data-end="820">Les revêtements protecteurs des écrans de téléphone jouent un rôle essentiel dans la résistance aux rayures, la force d'adhérence et la durabilité à long terme. Au fil du temps, les rayures, les microfissures et la délamination du revêtement peuvent réduire la clarté optique et la fiabilité, en particulier dans les environnements à usage intensif. Pour évaluer la résistance aux dommages mécaniques des différentes protections d'écran, des tests de rayures instrumentés fournissent des informations quantifiables sur les mécanismes de défaillance du revêtement, y compris l'adhérence, la cohésion et le comportement de rupture.</p><p data-start="822" data-end="1136">Dans cette étude, <a href="https://nanovea.com/instruments/pb1000/">NANOVEA PB1000 Essai mécanique</a> est utilisé pour comparer les protections d'écran en TPU et en verre trempé sous une charge progressive contrôlée. Grâce à une détection précise des émissions acoustiques, nous identifions les charges de rupture critiques et caractérisons la façon dont chaque matériau réagit à l'augmentation de la contrainte mécanique.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Pourquoi les tests de résistance aux rayures sont-ils importants pour les protecteurs d'écran ?</h2>				</div>
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									<p data-start="1228" data-end="1620">De nombreux utilisateurs supposent que les protecteurs plus épais ou plus durs sont automatiquement plus performants, mais la durabilité réelle dépend de la manière dont le matériau se comporte sous l'effet d'une charge progressive, d'une déformation de la surface et d'une contrainte localisée. Les essais de rayures instrumentés permettent aux ingénieurs de mesurer l'adhérence du revêtement, la force de cohésion, la résistance à l'usure de la surface et les charges exactes auxquelles les défaillances se déclenchent ou se propagent.</p><p data-start="1622" data-end="1964">En analysant les points d'initiation des fissures, le comportement de délamination et les modes de défaillance, les fabricants peuvent valider les performances des protecteurs d'écran à des fins de R&amp;D, de contrôle de la qualité ou d'analyse comparative. Les tests de nano-rayures et de micro-rayures offrent un aperçu reproductible et fondé sur des données de la durabilité dans le monde réel, bien au-delà des indices de dureté traditionnels.</p>								</div>
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									<p>ℹ️<em data-start="1410" data-end="1468"> En savoir plus sur <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">services d'essais de rayures et d'adhérence pour les revêtements et les protections d'écran.</a></em></p>								</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">Scratch Testing Objectif : <br>Mesure des charges de rupture dans les protecteurs d'écran</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">L'objectif de cette étude est de démontrer comment le testeur mécanique NANOVEA PB1000 réalise des essais répétables et normalisés de résistance aux rayures sur des protections d'écran en polymère et en verre. En augmentant progressivement la charge appliquée, le système détecte les charges critiques pour la rupture de la cohésion et de l'adhésivité, capture les signaux d'émission acoustique et établit une corrélation entre ces événements et la profondeur de la rayure, la force de frottement et la déformation de la surface.</p><p data-start="2146" data-end="2656">Cette méthodologie fournit un profil mécanique complet de chaque revêtement protecteur, permettant aux fabricants et aux équipes de R&amp;D d'évaluer les formulations des matériaux, la force d'adhérence du revêtement, la durabilité de la surface et l'épaisseur optimale du revêtement pour améliorer les performances du produit. Ces évaluations de la rayure font partie de la suite plus large d'études de NANOVEA sur les propriétés mécaniques des revêtements de protection. <a href="https://nanovea.com/mechanical-testers/">solutions d'essais mécaniques</a> utilisé pour caractériser les revêtements, les films et les substrats dans les environnements de R&amp;D, de contrôle de la qualité et de production.</p>								</div>
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									<p style="text-align: center; font-size: 18pt; color: black;">NANOVEA <span style="font-size: 18pt; color: #1b96cf;">PB1000 Grande plate-forme</span><br />Testeur Méchanique</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="NANOVEA SCRATCH TESTER : TEST D&#039;USURE DU REVÊTEMENT PTFE" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">Paramètres du test de grattage et configuration de l'instrument</h2>				</div>
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									<p data-start="1228" data-end="1620">L'évaluation de la résistance aux rayures des protecteurs d'écran en TPU et en verre trempé a été réalisée dans des conditions contrôlées afin de garantir la répétabilité et la précision de la détection de la charge de rupture. Les paramètres suivants définissent la configuration de l'essai de résistance aux rayures à charge progressive utilisé sur le testeur mécanique NANOVEA PB1000.</p>								</div>
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<tbody>
<tr>
<td style="width: 50.0898%; padding: 6px 8px; color: #1b96cf; font-weight: bold; text-align: left;">TYPE DE CHARGE</td>
<td style="width: 49.9102%; padding: 6px 8px; font-weight: bold; text-align: right;">PROGRESSIF</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">CHARGE INITIALE</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;">CHARGE FINALE</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;">VITESSE DE GLISSEMENT</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;">DISTANCE DE GLISSEMENT</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;">GÉOMÉTRIE DU PÉNÉTRATEUR</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">ROCKWELL (CÔNE DE 120°)</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">MATÉRIAU DU PÉNÉTRATEUR (POINTE)</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">DIAMANT</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">RAYON DE LA POINTE DU PÉNÉTRATEUR</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;">ATMOSPHÈRE</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">AIR</td>
</tr>
<tr>
<td style="padding: 6px 8px; color: #1b96cf; font-weight: bold; width: 50.0898%; text-align: left;">TEMPÉRATURE</td>
<td style="padding: 6px 8px; font-weight: bold; width: 49.9102%; text-align: right;">24 °C (TEMPÉRATURE AMBIANTE)</td>
</tr>
</tbody>
</table>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABLEAU 1 :</span><span class="fontstyle0" style="color: #000000;"> <span class="fontstyle0">Paramètres d'essai utilisés pour les essais de rayures</span> <br /></span></p>								</div>
				</div>
				<div class="elementor-element elementor-element-ebcc74a elementor-widget elementor-widget-image" data-id="ebcc74a" data-element_type="widget" data-widget_type="image.default">
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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="Échantillon de protection d&#039;écran soumis à un test de rayures sur le testeur mécanique NANOVEA PB1000" />															</div>
				</div>
				<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>Échantillon de protection d'écran monté sur le testeur mécanique NANOVEA PB1000 pendant la mesure de la rayure à charge progressive.</p>								</div>
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				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">Échantillons de protecteurs d'écran utilisés pour les tests de résistance aux rayures</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">Deux matériaux de protection d'écran disponibles dans le commerce ont été sélectionnés pour comparer les différences de résistance aux rayures, de comportement en cas de défaillance et de durabilité mécanique. Les deux échantillons ont été montés solidement sur le testeur mécanique NANOVEA PB1000 et évalués dans des conditions identiques de charge progressive afin de garantir une comparaison cohérente et impartiale.</p><p data-start="688" data-end="1108">Le protecteur d'écran en TPU est un film polymère souple doté d'une grande élasticité mais d'une faible résistance à l'abrasion, tandis que le protecteur en verre trempé est un matériau rigide et cassant conçu pour une grande dureté et une meilleure protection contre les chocs. Le test des deux matériaux sous le même profil de charge permet d'évaluer clairement l'influence de la composition, de l'élasticité et de la dureté du matériau sur les modes de défaillance des rayures.</p>								</div>
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									<p>Protecteur d'écran TPU</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-tpu-screen-protector-sample-scratch-test.jpg" class="attachment-medium size-medium wp-image-25234" alt="" />															</div>
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									<p>Verre trempé</p>								</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;">FIGURE 1:</span><span class="fontstyle0" style="color: #000000;"> Les protections d'écran en TPU et en verre trempé sont préparées pour les tests de résistance aux rayures.<br /></span></p>								</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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					<h2 class="elementor-heading-title elementor-size-default">Résultats des tests de rayures : Modes de défaillance des protecteurs d'écran en TPU et en verre trempé</h2>				</div>
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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;">TYPE DE PROTECTEUR D'ÉCRAN</td><td style="padding: 8px;">CHARGE CRITIQUE #1 (N)</td><td style="padding: 8px;">CHARGE CRITIQUE #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;">s/o</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;">VERRE TEMPÉRÉ</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>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABLEAU 2 :</span><span class="fontstyle0" style="color: #000000;"> Résumé des charges critiques pour chaque échantillon de protection d'écran.</span></p>								</div>
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									<p data-start="548" data-end="837">Les protecteurs d'écran en TPU et en verre trempé ayant des propriétés mécaniques fondamentalement différentes, chaque échantillon a présenté des modes de défaillance et des seuils de charge critique distincts lors des essais de rayure à charge progressive. Le tableau 2 résume les charges critiques mesurées pour chaque matériau.</p><p data-start="839" data-end="1181">La charge critique #1 représente le premier point observable de rupture cohésive au microscope optique, tel que l'apparition d'une fissure ou d'une rupture radiale.</p><p data-start="839" data-end="1181">La charge critique #2 correspond au premier événement majeur détecté par la surveillance des émissions acoustiques (AE), représentant généralement une défaillance structurelle plus importante ou un événement de pénétration.</p><h3 data-start="1188" data-end="1246"><strong data-start="1192" data-end="1244">Protection d'écran TPU - Comportement polymère flexible</strong></h3><p data-start="1247" data-end="1487">Le protecteur d'écran TPU n'a présenté qu'un seul événement critique significatif (charge critique #2). Cette charge correspond au point de la piste de rayure où le film commence à se soulever, à se décoller ou à se délaminer de la surface de l'écran du téléphone.</p><p data-start="1489" data-end="1789">Une fois la charge critique #2 (≈2,00 N) dépassée, le pénétrateur a pénétré suffisamment pour provoquer une rayure visible directement sur l'écran du téléphone pendant le reste du test. Aucun événement distinct de charge critique #1 n'a été détecté, ce qui est cohérent avec la grande élasticité du matériau et sa faible résistance à la cohésion.</p><h3 data-start="1796" data-end="1864"><strong data-start="1800" data-end="1862">Protecteur d'écran en verre trempé - Comportement de rupture fragile</strong></h3><p data-start="1865" data-end="1977">Le protecteur d'écran en verre trempé présentait deux charges critiques distinctes, caractéristiques des matériaux fragiles :</p><ul data-start="1979" data-end="2284"><li data-start="1979" data-end="2142"><p data-start="1981" data-end="2142">Charge critique #1 (≈3,61 N) : Des fractures radiales et des amorces de fissures ont été observées au microscope, indiquant une rupture cohésive précoce de la couche de verre.</p></li><li data-start="2143" data-end="2284"><p data-start="2145" data-end="2284">Charge critique #2 (≈7,44 N) : Un pic AE important et une forte augmentation de la profondeur de rayure indiquent une pénétration du protecteur à des charges plus élevées.</p></li></ul><p data-start="2286" data-end="2495">Bien que l'amplitude de l'EI soit supérieure à celle du TPU, aucun dommage n'a été transféré à l'écran du téléphone, ce qui démontre la capacité du protecteur en verre trempé à absorber et à répartir la charge avant une défaillance catastrophique.</p><p data-start="2497" data-end="2665">Dans les deux matériaux, la charge critique #2 correspondait au moment où le pénétrateur a traversé le protecteur d'écran, confirmant la limite de protection de chaque échantillon.</p>								</div>
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		</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">Protecteur d'écran TPU : Données des essais de rayures et analyse des défaillances</h3>				</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;">RAYURE</td><td style="padding: 8px;">CHARGE CRITIQUE #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;">MOYENNE</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;">ÉCART-TYPE</td><td style="padding: 6px 8px; text-align: center; font-weight: bold;">0.052</td></tr></tbody></table>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABLEAU 3 :</span><span class="fontstyle0" style="color: #000000;"> Charges critiques mesurées lors des essais de rayures du protecteur d'écran TPU.</span></p>								</div>
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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="Graphique montrant la friction, la force normale, les émissions acoustiques et la profondeur en fonction de la longueur de la rayure pour le protecteur d&#039;écran TPU testé sur le testeur mécanique NANOVEA." />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 2 :</span><span class="fontstyle0" style="color: #000000;"> Force de friction, charge normale, émission acoustique (AE) et profondeur de la rayure en fonction de la longueur de la rayure pour le protecteur d'écran TPU. <span class="fontstyle0">(B) Charge critique #2</span><br /></span></p>								</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;">FIGURE 3 :</span><span class="fontstyle0" style="color: #000000;"> Image au microscope optique du protecteur d'écran TPU à la charge critique #2 (grossissement 5× ; largeur de l'image 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>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 4 :</span><span class="fontstyle0" style="color: #000000;"> Image pleine longueur de la protection d'écran TPU montrant la trace complète de la rayure après un test de charge progressive.</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">Protecteur d'écran en verre trempé : Données de charge critique et comportement à la rupture</h3>				</div>
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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;">RAYURE</td>
<td style="padding: 8px;">CHARGE CRITIQUE #1 (N)</td>
<td style="padding: 8px;">CHARGE CRITIQUE #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;">MOYENNE</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;">ÉCART-TYPE</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>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABLEAU 4 :</span><span class="fontstyle0" style="color: #000000;"> Charges critiques mesurées lors d'essais de rayures de protecteurs d'écran en verre trempé.</span></p>								</div>
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									<p>ℹ️<em data-start="1410" data-end="1468"> Pour une comparaison avec les revêtements polymères non silicatés, voir notre étude sur les <a href="https://nanovea.com/ptfe-coating-wear-test/">Essai d'usure du revêtement PTFE</a>, qui met en évidence le comportement de rupture des films polymères à faible friction dans des conditions de charge progressive similaires.</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;">FIGURE 5 :</span><span class="fontstyle0" style="color: #000000;"> Force de friction, charge normale, émission acoustique (AE) et profondeur de la rayure en fonction de la longueur de la rayure pour le protecteur d'écran en verre trempé. <span class="fontstyle0">(A) Charge critique #1 (B) Charge critique #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="Images de microscopie optique montrant les points de rupture de la charge critique #1 et de la charge critique #2 sur le protecteur d&#039;écran en verre trempé lors d&#039;un essai de rayure à un grossissement de 5x à l&#039;aide du testeur mécanique NANOVEA." />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 6 :</span><span class="fontstyle0" style="color: #000000;"> Images de microscopie optique montrant les points de rupture pour la charge critique #1 (à gauche) et la charge critique #2 (à droite) à un grossissement de 5× (largeur de l'image : 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;">FIGURE 7 :</span><span class="fontstyle0" style="color: #000000;"> Image de microscopie optique de la piste de rayure en verre trempé après l'essai, mettant en évidence l'initiation de la fracture (CL#1) et la zone de pénétration finale (CL#2) à la suite d'un essai de charge progressive.<br /></span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Conclusion : Comparaison des performances des protecteurs d'écran en TPU et en verre trempé en matière de rayures</h2>				</div>
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									<p data-start="414" data-end="843">Cette étude démontre comment le testeur mécanique NANOVEA PB1000 fournit des mesures contrôlées, répétables et très sensibles de la résistance aux rayures en utilisant un chargement progressif et la détection des émissions acoustiques (AE). En capturant avec précision les événements de rupture cohésive et adhésive, le système permet une comparaison claire du comportement des protecteurs d'écran en TPU et en verre trempé sous l'effet d'une contrainte mécanique croissante.</p><p data-start="845" data-end="1188">Les résultats expérimentaux confirment que le verre trempé présente des charges critiques nettement plus élevées que le TPU, offrant une résistance supérieure aux rayures, une initiation retardée de la fracture et une protection fiable contre la pénétration d'un pénétrateur. La force de cohésion plus faible du TPU et sa délamination plus précoce mettent en évidence ses limites dans les environnements soumis à de fortes contraintes.</p><p data-start="845" data-end="1188">Après avoir identifié les charges de rupture, les traces de rayures qui en résultent peuvent également être analysées à l'aide d'un logiciel d'analyse. <a href="https://nanovea.com/profilometers/">profilomètre optique 3D sans contact</a> pour mesurer la profondeur des rainures, la déformation résiduelle et la topographie après rayage. Cela permet de compléter le profil mécanique de chaque matériau.</p><p data-start="1190" data-end="1564">Le testeur mécanique NANOVEA est conçu pour des essais d'indentation, de rayure et d'usure précis et répétables, et prend en charge les nano et micro-modules conformes aux normes ISO et ASTM. Sa polyvalence en fait une solution idéale pour évaluer le profil mécanique complet des films minces, des revêtements, des polymères, des verres et des substrats dans les domaines de la R&amp;D, de la production et du contrôle qualité.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Questions fréquemment posées <br> À propos des essais de résistance aux rayures</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">Qu'est-ce qu'un test de résistance aux rayures ?</h3>				</div>
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									<p data-start="168" data-end="494">L'essai de résistance à la rayure évalue la façon dont un matériau ou un revêtement réagit lorsqu'un stylet en diamant applique une charge progressivement croissante. Le test identifie les charges critiques où se produisent les défaillances de cohésion ou d'adhésion, fournissant une mesure quantifiable de la durabilité, de la force d'adhésion et de la résistance aux dommages de surface.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Quelle est la différence entre une défaillance cohésive et une défaillance adhésive ?</h3>				</div>
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									<p data-start="168" data-end="494">Défaillance de la cohésion <em data-start="840" data-end="848">à l'intérieur</em> le revêtement ou le matériau, comme la fissuration, la déchirure ou la fracture interne.<br data-start="921" data-end="924" />La défaillance de l'adhésif se produit lorsque le revêtement se détache du substrat, ce qui indique que la force d'adhérence est insuffisante.</p><p data-start="168" data-end="494">Le NANOVEA PB1000 détecte les deux en utilisant la surveillance synchronisée des émissions acoustiques, le suivi de la profondeur des rayures et l'analyse du frottement.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Pourquoi utiliser un testeur mécanique plutôt que des méthodes manuelles ?</h3>				</div>
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									<p data-start="168" data-end="494">Un testeur mécanique comme le NANOVEA PB1000 fournit des mesures précises, répétables et normalisées, garantissant des données fiables pour la R&amp;D, la validation de la production et le contrôle de la qualité. Il offre également des fonctions avancées, telles que la détection des émissions acoustiques et la surveillance de la profondeur en temps réel, que les méthodes manuelles ne peuvent pas offrir.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Besoin d'un test de rayures fiable pour vos matériaux ?</h2>				</div>
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				</div><p>The post <a href="https://nanovea.com/fr/test-de-resistance-aux-rayures-des-protections-decran-de-telephone/">Scratch Resistance Testing of Phone Screen Protectors</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Essai d'abrasivité des roches avec le tribomètre NANOVEA</title>
		<link>https://nanovea.com/fr/essais-dabrasivite-des-roches/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=rock-abrasivity-testing</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Mercredi 13 septembre 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>TRIBOLOGIE DES ROCHETTES : TESTS D'ABRASIVITE DES ROCHETTES A L'AIDE D'UN TRIBOMETRE NANOVEA Préparé par DUANJIE LI, PhD INTRODUCTION Les roches sont composées de grains de minéraux. Le type et l'abondance de ces minéraux, ainsi que la force de liaison chimique entre les grains minéraux, déterminent les propriétés mécaniques et tribologiques des roches. Selon les cycles géologiques, les roches peuvent [...]</p>
<p>The post <a href="https://nanovea.com/fr/essais-dabrasivite-des-roches/">Rock Abrasivity Testing with NANOVEA Tribometer</a> appeared first on <a href="https://nanovea.com/fr">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="23217" class="elementor elementor-23217" data-elementor-post-type="post">
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									<h1 style="text-align: center; font-style: italic; font-weight: bold;"><span style="font-size: 80px; color: #1b96cf; display: block;">TRIBOLOGIE DES ROCHES :</span><span style="font-size: 32px; color: #000;">TEST D'ABRASIVITÉ DES ROCHES À L'AIDE D'UN TRIBOMÈTRE 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="TRIBOLOGIE DES ROCHES : Essai d&#039;abrasivité des roches à l&#039;aide du tribomètre NANOVEA" loading="lazy" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Préparé par</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">INTRODUCTION</h2>				</div>
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									Les roches sont composées de grains de minéraux. Le type et l&#039;abondance de ces minéraux, ainsi que la force de liaison chimique entre les grains minéraux, déterminent les propriétés mécaniques et tribologiques des roches. En fonction des cycles géologiques des roches, les roches peuvent subir des transformations et sont généralement classées en trois grands types : ignées, sédimentaires et métamorphiques. Ces roches présentent différentes compositions minérales et chimiques, perméabilités et tailles de particules, et ces caractéristiques contribuent à leur résistance à l&#039;usure variée. La tribologie des roches explore les comportements d&#039;usure et de friction des roches dans diverses conditions géologiques et environnementales.								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTANCE DES ESSAIS D'ABRASION DES ROCHES</h3>				</div>
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									<p>Divers types d&#039;usure des roches, notamment l&#039;abrasion et la friction, se produisent pendant le processus de forage des puits, entraînant d&#039;importantes pertes directes et consécutives attribuées à la réparation et au remplacement des trépans et des outils de coupe. Par conséquent, l’étude de la forabilité, de la forabilité, de la découpabilité et de l’abrasivité des roches est essentielle dans les industries pétrolière, gazière et minière. La recherche en tribologie des roches joue un rôle central dans la sélection des stratégies de forage les plus efficaces et les plus rentables, améliorant ainsi l&#039;efficacité globale et contribuant à la conservation des matériaux, de l&#039;énergie et de l&#039;environnement. De plus, minimiser le frottement de surface est très avantageux pour réduire l&#039;interaction entre le trépan de forage et la roche, ce qui entraîne une diminution de l&#039;usure de l&#039;outil et une efficacité de forage/coupe améliorée.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJECTIF DE MESURE</h2>				</div>
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									<p>Dans cette étude, nous avons simulé et comparé les propriétés tribologiques de deux types de roches afin de mettre en évidence la capacité de la technologie de l'eau. <a href="https://nanovea.com/instruments/t50/">Tribomètre NANOVEA T50</a> en mesurant le coefficient de frottement et le taux d&#039;usure des roches de manière contrôlée et surveillée.</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 Compact</span><br>Tribomètre à poids libre</p>								</div>
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							<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="NANOVEA TRIBOMETRE : Essai d&#039;abrasivité du calcaire et du marbre" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">LES ÉCHANTILLONS</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="essais d&#039;usure et de frottement du marbre et du calcaire - tribologie des roches" loading="lazy" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">PROCÉDURE DE TEST</h2>				</div>
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									<p>Le coefficient de frottement, COF et la résistance à l&#039;usure de deux échantillons de roche ont été évalués par le tribomètre NANOVEA T50 à l&#039;aide du module d&#039;usure Pin-on-Disc. Une bille d&#039;Al2O3 (diamètre 6 mm) a été utilisée comme contre-matériau. La trace d&#039;usure a été examinée à l&#039;aide du profilomètre sans contact NANOVEA après les tests. Les paramètres de test sont résumés ci-dessous.</p><p>Le taux d&#039;usure, K, a été évalué à l&#039;aide de la formule K=V/(F×s)=A/(F×n), où V est le volume usé, F est la charge normale, s est la distance de glissement, A est la surface de la section transversale de la piste d&#039;usure, et n est le nombre de tours. La rugosité de la surface et les profils des traces d&#039;usure ont été évalués avec le profilomètre optique NANOVEA, et la morphologie des traces d&#039;usure a été examinée à l&#039;aide d&#039;un microscope optique.</p><p>Veuillez noter que la bille Al2O3 comme matériau de comptoir a été utilisée comme exemple dans cette étude. N&#039;importe quel matériau solide de formes différentes peut être appliqué à l&#039;aide d&#039;un dispositif personnalisé pour simuler la situation réelle de l&#039;application.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">PARAMÈTRES D'ESSAI</h2>				</div>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">ÉCHANTILLONS</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Calcaire, Marbre</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">RAYON DE L&#039;ANNEAU D&#039;USURE </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;">FORCE NORMALE</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;">DURÉE DU TEST</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>10 minutes</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">VITESSE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>100 tr/min</strong></em></td>
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					<h2 class="elementor-heading-title elementor-size-default">RÉSULTATS ET DISCUSSION</h2>				</div>
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									<p>La dureté (H) et le module élastique (E) des échantillons de calcaire et de marbre sont comparés dans la FIGURE 1, en utilisant le module Micro Indentation du testeur mécanique NANOVEA. L&#039;échantillon de calcaire présentait des valeurs H et E inférieures, mesurant respectivement 0,53 et 25,9 GPa, contrairement au marbre, qui enregistrait des valeurs de 1,07 pour H et 49,6 GPa pour E. La variabilité relativement plus élevée des valeurs H et E observée dans le L&#039;échantillon de calcaire peut être attribué à sa plus grande inhomogénéité de surface, provenant de ses caractéristiques granulées et poreuses.</p><p>L&#039;évolution du COF lors des essais d&#039;usure des deux échantillons de roche est représentée dans la FIGURE 2. Le calcaire connaît initialement une augmentation rapide du COF jusqu&#039;à environ 0,8 au début de l&#039;essai d&#039;usure, maintenant cette valeur pendant toute la durée de l&#039;essai. Ce changement brusque du COF peut être attribué à la pénétration de la bille d&#039;Al2O3 dans l&#039;échantillon de roche, résultant d&#039;un processus rapide d&#039;usure et de rugosité se produisant au niveau de la face de contact à l&#039;intérieur de la piste d&#039;usure. En revanche, l’échantillon de marbre présente une augmentation notable du COF jusqu’à des valeurs plus élevées après environ 5 mètres de distance de glissement, ce qui signifie sa résistance à l’usure supérieure à celle du calcaire.</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="Essai de dureté de la roche" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 1:</span><span class="fontstyle0" style="color: #000000;"> Comparaison de la dureté et du module d'Young entre les échantillons de calcaire et de marbre.</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="Évolution du coefficient de frottement (COF) dans des échantillons de calcaire et de marbre au cours d&#039;essais d&#039;usure" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 2 :</span><span class="fontstyle0" style="color: #000000;"> Evolution du Coefficient de Friction (COF) dans des échantillons de calcaire et de marbre lors d&#039;essais d&#039;usure.</span></p>								</div>
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									La FIGURE 3 compare les profils en coupe transversale des échantillons de calcaire et de marbre après les tests d&#039;usure, et le tableau 1 résume les résultats de l&#039;analyse des traces d&#039;usure. La FIGURE 4 montre les traces d&#039;usure des échantillons au microscope optique. L&#039;évaluation de la trace d&#039;usure s&#039;aligne sur l&#039;observation de l&#039;évolution du COF : l&#039;échantillon de marbre, qui maintient un faible COF pendant une période plus longue, présente un taux d&#039;usure inférieur de 0,0046 mm³/N·m, contre 0,0353 mm³/N·m pour le calcaire. Les propriétés mécaniques supérieures du marbre contribuent à sa meilleure résistance à l’usure que le calcaire.								</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/09/rock-wear-tester.jpg" title="" alt="TEST D&#039;ABRASIVITÉ DES ROCHES À L&#039;AIDE D&#039;UN TRIBOMÈTRE NANOVEA" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 3 :</span><span class="fontstyle0" style="color: #000000;"> Profils en coupe des traces d&#039;usure.</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;">TABLEAU 1 :</span><span class="fontstyle0" style="color: #000000;"> Résumé des résultats de l’analyse des traces d’usure.</span></p>								</div>
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				<div class="elementor-element elementor-element-a1688e7 elementor-widget elementor-widget-image" data-id="a1688e7" data-element_type="widget" data-widget_type="image.default">
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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;">FIGURE 4 :</span><span class="fontstyle0" style="color: #000000;"> Traces d'usure au microscope optique.</span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSION</h2>				</div>
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									<p>Dans cette étude, nous avons présenté la capacité du tribomètre NANOVEA à évaluer le coefficient de frottement et la résistance à l&#039;usure de deux échantillons de roche, à savoir le marbre et le calcaire, de manière contrôlée et surveillée. Les propriétés mécaniques supérieures du marbre contribuent à sa résistance exceptionnelle à l’usure. Cette propriété rend difficile le forage ou la coupe dans l’industrie pétrolière et gazière. À l’inverse, il prolonge considérablement sa durée de vie lorsqu’il est utilisé comme matériau de construction de haute qualité, comme les carreaux de sol.</p><p>Les tribomètres NANOVEA offrent des capacités de test d&#039;usure et de friction précises et reproductibles, conformes aux normes ISO et ASTM en modes rotatif et linéaire. De plus, il fournit des modules optionnels pour l&#039;usure à haute température, la lubrification et la tribocorrosion, le tout parfaitement intégré dans un seul système. La gamme inégalée de NANOVEA est une solution idéale pour déterminer la gamme complète des propriétés tribologiques des revêtements, films, substrats fins ou épais, souples ou durs, et de la tribologie des roches.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/fr/essais-dabrasivite-des-roches/">Rock Abrasivity Testing with NANOVEA Tribometer</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Analyse de surface grenaillée</title>
		<link>https://nanovea.com/fr/analyse-de-surface-grenaillee/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=shot-peened-surface-analysis</link>
					<comments>https://nanovea.com/fr/analyse-de-surface-grenaillee/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Mer 16 août 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>SHOT PEENED SURFACE ANALYSIS USING 3D NON-CONTACT PROFILOMETER Prepared by CRAIG LEISING INTRODUCTION Shot peening is a process in which a substrate is bombarded with spherical metal, glass, or ceramic beads—commonly referred to as &#8220;shot&#8221;—at a force intended to induce plasticity on the surface. Analyzing the characteristics before and after peening provides crucial insights for [&#8230;]</p>
<p>The post <a href="https://nanovea.com/fr/analyse-de-surface-grenaillee/">Shot Peened Surface Analysis</a> appeared first on <a href="https://nanovea.com/fr">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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					<h1 class="elementor-heading-title elementor-size-default">ANALYSE DE SURFACE GRAPPEE</h1>				</div>
				</div>
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					<h2 class="elementor-heading-title elementor-size-default">UTILISATION DU PROFILOMÈTRE 3D SANS CONTACT</h2>				</div>
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															<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>
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					<p class="elementor-heading-title elementor-size-default">Préparé par</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">CRAIG LEISING</p>				</div>
				</div>
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		</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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					<h2 class="elementor-heading-title elementor-size-default">INTRODUCTION</h2>				</div>
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									<p>Le grenaillage est un processus dans lequel un substrat est bombardé avec des billes sphériques de métal, de verre ou de céramique - communément appelées &quot;grenaille&quot; - à une force destinée à induire une plasticité sur la surface. L&#039;analyse des caractéristiques avant et après le grenaillage fournit des informations cruciales pour améliorer la compréhension et le contrôle du processus. La rugosité de la surface et la zone de couverture des fossettes laissées par le tir sont des aspects particulièrement intéressants.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">Importance du profilomètre 3D sans contact pour l&#039;analyse de surface grenaillée</h3>				</div>
				</div>
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									<p>Contrairement aux profilomètres à contact traditionnels, traditionnellement utilisés pour l&#039;analyse des surfaces grenaillées, la mesure 3D sans contact fournit une image 3D complète pour offrir une compréhension plus complète de la zone de couverture et de la topographie de la surface. Sans fonctionnalités 3D, une inspection s’appuiera uniquement sur des informations 2D, insuffisantes pour caractériser une surface. Comprendre la topographie, la zone de couverture et la rugosité en 3D constitue la meilleure approche pour contrôler ou améliorer le processus de grenaillage. NANOVEA <a href="https://nanovea.com/profilometers/">Profilomètres 3D sans contact</a> utilise la technologie Chromatic Light avec une capacité unique à mesurer les angles abrupts trouvés sur les surfaces usinées et martelées. De plus, lorsque d&#039;autres techniques ne parviennent pas à fournir des données fiables en raison du contact de la sonde, de la variation de la surface, de l&#039;angle ou de la réflectivité, les profilomètres NANOVEA réussissent.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJECTIF DE MESURE</h2>				</div>
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									<p>Dans cette application, le profilomètre sans contact NANOVEA ST400 est utilisé pour mesurer la matière première et deux surfaces martelées différemment pour un examen comparatif. Il existe une liste interminable de paramètres de surface qui peuvent être calculés automatiquement après le scan de surface 3D. Ici, nous examinerons la surface 3D et sélectionnerons les zones d&#039;intérêt pour une analyse plus approfondie, y compris la quantification et l&#039;étude de la rugosité, des fossettes et de la surface.</p>								</div>
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									<p style="text-align: center; font-size: 20pt; color: black;">NANOVEA <span style="font-size: 20pt; color: #1b96cf;">ST400 Standard</span><br />Profilomètre optique 3D</p>								</div>
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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="Profilomètre 3D NANOVEA ST500" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">L&#039;ÉCHANTILLON</h2>				</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="Essai sur surface grenaillée" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">RÉSULTATS</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">SURFACE EN ACIER</h3>				</div>
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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="Rugosité de surface grenaillée" />															</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="Caractérisation des surfaces grenaillées" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">ISO 25178</span><span class="fontstyle0" style="color: #000000;"> PARAMÈTRES DE RUGOSITÉ 3D</span></p>								</div>
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<tr>
<td>SA</td>
<td>0,399 μm</td>
<td>Rugosité moyenne</td>
</tr>
<tr>
<td>Sq</td>
<td>0,516 μm</td>
<td>Rugosité RMS</td>
</tr>
<tr>
<td>Sz</td>
<td>5,686 μm</td>
<td>Pic à vallée maximum</td>
</tr>
<tr>
<td>Sp</td>
<td>2,976 μm</td>
<td>Hauteur maximale du pic</td>
</tr>
<tr>
<td>Sv</td>
<td>2,711 μm</td>
<td>Profondeur maximale de la fosse</td>
</tr>
<tr>
<td>UGS</td>
<td>3.9344</td>
<td>Kurtosis</td>
</tr>
<tr>
<td>Ssk</td>
<td>-0.0113</td>
<td>Skewness</td>
</tr>
<tr>
<td>Sal</td>
<td>0,0028 millimètres</td>
<td>Longueur d&#039;auto-corrélation</td>
</tr>
<tr>
<td>Str</td>
<td>0.0613</td>
<td>Rapport d&#039;aspect des textures</td>
</tr>
<tr>
<td>Sdar</td>
<td>26,539 mm²</td>
<td>Superficie</td>
</tr>
<tr>
<td>Svk</td>
<td>0,589 μm</td>
<td>Profondeur réduite de la vallée</td>
</tr>
</tbody>
</table>
&nbsp;								</div>
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					<h2 class="elementor-heading-title elementor-size-default">RÉSULTATS</h2>				</div>
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					<h3 class="elementor-heading-title elementor-size-default">SURFACE MARTELÉE 1</h3>				</div>
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				<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="Profil de surface grenaillé" />															</div>
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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="Profilométrie de surface grenaillée" />															</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;">SURFACE COUVERTE </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="Étude des surfaces grenaillées" />															</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;"> PARAMÈTRES DE RUGOSITÉ 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">
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    <style>
        table {
            border-collapse: collapse;
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        }

        th, td {
            border: 1px solid black;
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        th {
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<body>

<table>
    <tr>
        <td>Sa</td>
        <td>4.102 μm</td>
        <td>Rugosité moyenne</td>
    </tr>
    <tr>
        <td>Sq</td>
        <td>5,153 μm</td>
        <td>Rugosité RMS</td>
    </tr>
    <tr>
        <td>Sz</td>
        <td>44,975 μm</td>
        <td>Pic à vallée maximum</td>
    </tr>
    <tr>
        <td>Sp</td>
        <td>24,332 μm</td>
        <td>Hauteur maximale du pic</td>
    </tr>
    <tr>
        <td>Sv</td>
        <td>20,644 μm</td>
        <td>Profondeur maximale de la fosse</td>
    </tr>
    <tr>
        <td>UGS</td>
        <td>3.0187</td>
        <td>Kurtosis</td>
    </tr>
    <tr>
        <td>Ssk</td>
        <td>0.0625</td>
        <td>Skewness</td>
    </tr>
    <tr>
        <td>Sal</td>
        <td>0,0976 mm</td>
        <td>Longueur d&#039;auto-corrélation</td>
    </tr>
    <tr>
        <td>Str</td>
        <td>0.9278</td>
        <td>Rapport d&#039;aspect des textures</td>
    </tr>
    <tr>
        <td>Sdar</td>
        <td>29,451 mm²</td>
        <td>Superficie</td>
    </tr>
    <tr>
        <td>Svk</td>
        <td>5,008 μm</td>
        <td>Profondeur réduite de la vallée</td>
    </tr>
</table>

</body>
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				</div>
					</div>
		</div>
					</div>
		</section>
					</div>
		</div>
					</div>
		</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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						<div class="elementor-element elementor-element-44e7973 elementor-widget elementor-widget-heading" data-id="44e7973" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default">RÉSULTATS</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">SURFACE MARTELÉE 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">
						<div class="elementor-container elementor-column-gap-narrow">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-4c7d136" data-id="4c7d136" data-element_type="column">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-8af2d8f elementor-widget elementor-widget-image" data-id="8af2d8f" data-element_type="widget" data-widget_type="image.default">
				<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="Essai sur surface grenaillée" />															</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">
			<div class="elementor-widget-wrap elementor-element-populated">
						<div class="elementor-element elementor-element-4123bb8 elementor-widget elementor-widget-image" data-id="4123bb8" data-element_type="widget" data-widget_type="image.default">
				<div class="elementor-widget-container">
															<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="Analyse d&#039;une surface grenaillée" />															</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">
					<div class="elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-8f73d6a" data-id="8f73d6a" data-element_type="column">
			<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;">SURFACE COUVERTE</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="Métrologie des surfaces grenaillées" />															</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;"> PARAMÈTRES DE RUGOSITÉ 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;
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</head>
<body>

<table>
    <tr>
        <td>Sa</td>
        <td>4.330 μm</td>
        <td>Rugosité moyenne</td>
    </tr>
    <tr>
        <td>Sq</td>
        <td>5,455 μm</td>
        <td>Rugosité RMS</td>
    </tr>
    <tr>
        <td>Sz</td>
        <td>54,013 μm</td>
        <td>Pic à vallée maximum</td>
    </tr>
    <tr>
        <td>Sp</td>
        <td>25,908 μm</td>
        <td>Hauteur maximale du pic</td>
    </tr>
    <tr>
        <td>Sv</td>
        <td>28.105 μm</td>
        <td>Profondeur maximale de la fosse</td>
    </tr>
    <tr>
        <td>UGS</td>
        <td>3.0642</td>
        <td>Kurtosis</td>
    </tr>
    <tr>
        <td>Ssk</td>
        <td>0.1108</td>
        <td>Skewness</td>
    </tr>
    <tr>
        <td>Sal</td>
        <td>0,1034 mm</td>
        <td>Longueur d&#039;auto-corrélation</td>
    </tr>
    <tr>
        <td>Str</td>
        <td>0.9733</td>
        <td>Rapport d&#039;aspect des textures</td>
    </tr>
    <tr>
        <td>Sdar</td>
        <td>29,623 mm²</td>
        <td>Superficie</td>
    </tr>
    <tr>
        <td>Svk</td>
        <td>5,167 μm</td>
        <td>Profondeur réduite de la vallée</td>
    </tr>
</table>
</body>
</html>
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				</div>
					</div>
		</div>
					</div>
		</section>
					</div>
		</div>
					</div>
		</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">CONCLUSION</h2>				</div>
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				<div class="elementor-element elementor-element-ff1e3df elementor-widget elementor-widget-text-editor" data-id="ff1e3df" data-element_type="widget" data-widget_type="text-editor.default">
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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>Dans cette application d&#039;analyse de surface grenaillée, nous avons démontré comment le profileur 3D sans contact NANOVEA ST400 caractérise précisément à la fois la topographie et les détails nanométriques d&#039;une surface grenaillée. Il est évident que la Surface 1 et la Surface 2 ont un impact significatif sur tous les paramètres rapportés ici par rapport à la matière première. Un simple examen visuel des images révèle les différences entre les surfaces. Ceci est encore confirmé en observant la zone de couverture et les paramètres énumérés. Par rapport à la surface 2, la surface 1 présente une rugosité moyenne inférieure (Sa), des bosses moins profondes (Sv) et une surface réduite (Sdar), mais une zone de couverture légèrement supérieure.</p><p>À partir de ces mesures de surface 3D, les zones d&#039;intérêt peuvent être facilement identifiées et soumises à une gamme complète de mesures, y compris la rugosité, la finition, la texture, la forme, la topographie, la planéité, le gauchissement, la planéité, le volume, la hauteur de marche et autres. Une coupe 2D peut être rapidement choisie pour une analyse détaillée. Ces informations permettent une étude complète des surfaces grenaillées, en utilisant une gamme complète de ressources de mesure de surface. Des domaines d&#039;intérêt spécifiques pourraient être examinés plus en détail avec un module AFM intégré. Les profilomètres 3D NANOVEA offrent des vitesses allant jusqu&#039;à 200 mm/s. Ils peuvent être personnalisés en termes de taille, de vitesse, de capacités de numérisation et peuvent même être conformes aux normes de salle blanche de classe 1. Des options telles que le convoyeur d&#039;indexation et l&#039;intégration pour une utilisation en ligne ou en ligne sont également disponibles.</p></div></div></div></div></div></div>								</div>
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									<p><span class="fontstyle0">Nous remercions tout particulièrement M. Hayden, de l'IMF, pour nous avoir fourni l'échantillon présenté dans cette note. Industrial Metal Finishing Inc. |  indmetfin.com</span></p>								</div>
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				</div><p>The post <a href="https://nanovea.com/fr/analyse-de-surface-grenaillee/">Shot Peened Surface Analysis</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Morphologie de la surface de la peinture</title>
		<link>https://nanovea.com/fr/morphologie-surface-peinture/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=paint-surface-morphology</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Vendredi 4 août 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>PAINT SURFACE MORPHOLOGY AUTOMATED REAL-TIME EVOLUTION MONITORINGUSING NANOVEA 3D PROFILOMETER Prepared by DUANJIE LI, PhD INTRODUCTION Protective and decorative properties of paint play a significant role in a variety of industries, including automotive, marine, military, and construction. To achieve desired properties, such as corrosion resistance, UV protection, and abrasion resistance, paint formulas and architectures are [&#8230;]</p>
<p>The post <a href="https://nanovea.com/fr/morphologie-surface-peinture/">Paint Surface Morphology</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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					<h1 class="elementor-heading-title elementor-size-default">MORPHOLOGIE DE LA SURFACE DE PEINTURE</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">SUIVI AUTOMATISÉ DE L&#039;ÉVOLUTION EN TEMPS RÉEL<br>UTILISATION DU PROFILOMÈTRE 3D NANOVEA</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="Morphologie de la surface de la peinture" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Préparé par</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">INTRODUCTION</h2>				</div>
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									<p>Les propriétés protectrices et décoratives de la peinture jouent un rôle important dans une variété d&#039;industries, y compris l&#039;automobile, la marine, l&#039;armée et la construction. Pour obtenir les propriétés souhaitées, telles que la résistance à la corrosion, la protection contre les UV et la résistance à l&#039;abrasion, les formules et les architectures de peinture sont soigneusement analysées, modifiées et optimisées.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTANCE DU PROFILOMÈTRE 3D SANS CONTACT POUR L&#039;ANALYSE DE LA MORPHOLOGIE DE LA SURFACE DE LA PEINTURE SÉCHANTE</h3>				</div>
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									<p>La peinture est généralement appliquée sous forme liquide et subit un processus de séchage, qui implique l&#039;évaporation des solvants et la transformation de la peinture liquide en un film solide. Au cours du processus de séchage, la surface de la peinture change progressivement de forme et de texture. Différentes finitions et textures de surface peuvent être développées en utilisant des additifs pour modifier la tension de surface et les propriétés d&#039;écoulement de la peinture. Cependant, dans le cas d&#039;une recette de peinture mal formulée ou d&#039;un traitement de surface inapproprié, des défaillances indésirables de la surface de peinture peuvent se produire.</p>
<p>Une surveillance précise in situ de la morphologie de la surface de la peinture pendant la période de séchage peut fournir un aperçu direct du mécanisme de séchage. De plus, l’évolution en temps réel des morphologies de surface constitue une information très utile dans diverses applications, comme l’impression 3D. La NANOVÉA <a href="https://nanovea.com/profilometers/">Profilomètres 3D sans contact</a> mesurer la morphologie de la surface de la peinture des matériaux sans toucher l&#039;échantillon, en évitant toute altération de forme qui pourrait être provoquée par des technologies de contact telles qu&#039;un stylet coulissant.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJECTIF DE MESURE</h2>				</div>
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									<p>Dans cette application, le profilomètre sans contact NANOVEA ST500, équipé d&#039;un capteur optique de ligne à grande vitesse, est utilisé pour surveiller la morphologie de la surface de la peinture pendant sa période de séchage d&#039;une heure. Nous présentons la capacité du profilomètre sans contact NANOVEA à fournir une mesure de profil 3D automatisée en temps réel des matériaux avec un changement de forme continu.</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 Grande surface</span><br>
  Profilomètre optique 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="Profilomètre 3D NANOVEA ST500" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">RÉSULTATS ET DISCUSSION</h2>				</div>
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									<p>La peinture a été appliquée sur la surface d&#039;une tôle, suivie immédiatement de mesures automatisées de l&#039;évolution morphologique de la peinture en séchage in situ à l&#039;aide du profilomètre sans contact NANOVEA ST500 équipé d&#039;un capteur de ligne à grande vitesse. Une macro avait été programmée pour mesurer et enregistrer automatiquement la morphologie de la surface 3D à des intervalles de temps spécifiques : 0, 5, 10, 20, 30, 40, 50 et 60 min. Cette procédure d&#039;analyse automatisée permet aux utilisateurs d&#039;effectuer automatiquement des tâches d&#039;analyse en exécutant des procédures définies dans l&#039;ordre, ce qui réduit considérablement les efforts, le temps et les éventuelles erreurs de l&#039;utilisateur par rapport aux tests manuels ou aux analyses répétées. Cette automatisation s&#039;avère extrêmement utile pour les mesures à long terme impliquant plusieurs balayages à différents intervalles de temps.</p><p>Le capteur de ligne optique génère une ligne lumineuse composée de 192 points, comme illustré à la FIGURE 1. Ces 192 points lumineux balayent simultanément la surface de l&#039;échantillon, ce qui augmente considérablement la vitesse de balayage. Cela garantit que chaque scan 3D est terminé rapidement pour éviter des changements de surface substantiels lors de chaque scan individuel.</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="Analyse des revêtements de peinture à l&#039;aide d&#039;un profilomètre 3D" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 1:</span><span class="fontstyle0" style="color: #000000;"> Capteur de ligne optique balayant la surface de la peinture en cours de séchage.</span></p>								</div>
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									<p>La vue en fausses couleurs, la vue 3D et le profil 2D de la topographie de la peinture de séchage à des moments représentatifs sont illustrés sur la FIGURE 2, la FIGURE 3 et la FIGURE 4, respectivement. La fausse couleur dans les images facilite la détection de caractéristiques qui ne sont pas facilement discernables. Différentes couleurs représentent les variations de hauteur sur différentes zones de la surface de l&#039;échantillon. La vue 3D offre aux utilisateurs un outil idéal pour observer la surface de la peinture sous différents angles. Au cours des 30 premières minutes du test, les fausses couleurs sur la surface de la peinture passent progressivement de tons plus chauds à des tons plus froids, indiquant une diminution progressive de la hauteur au fil du temps au cours de cette période. Ce processus ralentit, comme le montre le léger changement de couleur lors de la comparaison de la peinture à 30 et 60 minutes.</p><p>La hauteur moyenne de l&#039;échantillon et les valeurs de rugosité Sa en fonction du temps de séchage de la peinture sont tracées à la FIGURE 5. L&#039;analyse complète de la rugosité de la peinture après 0, 30 et 60 min de temps de séchage est répertoriée dans le TABLEAU 1. On peut observer que la hauteur moyenne de la surface de la peinture diminue rapidement de 471 à 329 µm au cours des 30 premières minutes de temps de séchage. La texture de surface se développe en même temps que le solvant se vaporise, conduisant à une augmentation de la valeur de rugosité Sa de 7,19 à 22,6 µm. Le processus de séchage de la peinture ralentit par la suite, entraînant une diminution progressive de la hauteur de l&#039;échantillon et de la valeur Sa à 317 µm et 19,6 µm, respectivement, à 60 min.</p><p>Cette étude met en évidence les capacités du profilomètre 3D sans contact NANOVEA à surveiller les changements de surface 3D de la peinture en cours de séchage en temps réel, fournissant des informations précieuses sur le processus de séchage de la peinture. En mesurant la morphologie de la surface sans toucher l&#039;échantillon, le profilomètre évite d&#039;introduire des altérations de forme dans la peinture non séchée, ce qui peut se produire avec des technologies de contact comme le stylet coulissant. Cette approche sans contact garantit une analyse précise et fiable de la morphologie de la surface de séchage de la peinture.</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="Morphologie de la surface de la peinture" />															</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="Morphologie des revêtements de peinture" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 2 :</span><span class="fontstyle0" style="color: #000000;"> Évolution de la morphologie de la surface de séchage de la peinture à différents moments.</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="Caractérisation de la surface des peintures" />															</div>
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															<img decoding="async" src="https://nanovea.com/wp-content/uploads/2023/08/Drying-Paint-Surface-QC.jpg" title="" alt="Profil de la surface de la peinture" 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="Analyse de la surface des peintures" loading="lazy" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 3 :</span><span class="fontstyle0" style="color: #000000;"> Vue 3D de l&#039;évolution de la surface de la peinture à différents temps de séchage.</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="Profilométrie de la surface de la peinture" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 4 :</span><span class="fontstyle0" style="color: #000000;"> Profil 2D sur l&#039;échantillon de peinture après différents temps de séchage.</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="Étude de la surface de la peinture" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 5 :</span><span class="fontstyle0" style="color: #000000;"> Évolution de la hauteur moyenne de l&#039;échantillon et de la valeur de rugosité Sa en fonction du temps de séchage de la peinture.</span></p>								</div>
				</div>
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					<h3 class="elementor-heading-title elementor-size-default">ISO 25178 - Paramètres de texture de surface</h3>				</div>
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									<table class="alignright" style="width: 100%;">
<tbody>
<tr>
<td><em><b>Temps de séchage (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>Carré (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>UGS</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;">Carré –</span><span class="fontstyle0" style="color: #000000;"> Hauteur racine carrée moyenne </span><span class="fontstyle0" style="color: #1b96cf;"> | UGS –</span><span class="fontstyle0" style="color: #000000;"> Kurtosis </span><span class="fontstyle0" style="color: #1b96cf;"> | Sp-</span><span class="fontstyle0" style="color: #000000;"> Hauteur maximale du pic</span><span class="fontstyle0" style="color: #1b96cf;"> | Sv-</span><span class="fontstyle0" style="color: #000000;"> Hauteur maximale de la fosse</span><span class="fontstyle0" style="color: #1b96cf;"> | Sz-</span><span class="fontstyle0" style="color: #000000;"> Hauteur maximale</span><span class="fontstyle0" style="color: #1b96cf;"> | Sv-</span><span class="fontstyle0" style="color: #000000;"> Hauteur moyenne arithmétique</span></p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABLEAU 1 :</span><span class="fontstyle0" style="color: #000000;"> <span class="fontstyle0">Rugosité de la peinture à différents temps de séchage.</span> <br /></span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSION</h2>				</div>
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<p>Dans cette application, nous avons présenté les capacités du profilomètre 3D sans contact NANOVEA ST500 pour surveiller l&#039;évolution de la morphologie de la surface de la peinture pendant le processus de séchage. Le capteur de ligne optique à grande vitesse, générant une ligne avec 192 points lumineux qui balayent simultanément la surface de l&#039;échantillon, a rendu l&#039;étude rapide tout en garantissant une précision inégalée.</p>
<p>La fonction macro du logiciel d&#039;acquisition permet de programmer des mesures automatisées de la morphologie de surface 3D in situ, ce qui la rend particulièrement utile pour les mesures à long terme impliquant plusieurs balayages à des intervalles de temps cibles spécifiques. Cela réduit considérablement le temps, les efforts et le potentiel d&#039;erreurs de l&#039;utilisateur. Les changements progressifs de la morphologie de la surface sont surveillés en continu et enregistrés en temps réel au fur et à mesure que la peinture sèche, fournissant des informations précieuses sur le mécanisme de séchage de la peinture.</p>
<p>Les données présentées ici ne représentent qu&#039;une fraction des calculs disponibles dans le logiciel d&#039;analyse. Les profilomètres NANOVEA sont capables de mesurer pratiquement n&#039;importe quelle surface, qu&#039;elle soit transparente, sombre, réfléchissante ou opaque.</p></div></div></div>
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				</div><p>The post <a href="https://nanovea.com/fr/morphologie-surface-peinture/">Paint Surface Morphology</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Test d&#039;usure du revêtement PTFE</title>
		<link>https://nanovea.com/fr/test-dusure-du-revetement-ptfe/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=ptfe-coating-wear-test</link>
					<comments>https://nanovea.com/fr/test-dusure-du-revetement-ptfe/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Jeu. 22 juin 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>PTFE COATING WEAR TEST USING TRIBOMETER AND MECHANICAL TESTER Prepared by DUANJIE LI, PhD INTRODUCTION Polytetrafluoroethylene (PTFE), commonly known as Teflon, is a polymer with an exceptionally low coefficient of friction (COF) and excellent wear resistance, depending on the applied loads. PTFE exhibits superior chemical inertness, high melting point of 327°C (620°F), and maintains high [&#8230;]</p>
<p>The post <a href="https://nanovea.com/fr/test-dusure-du-revetement-ptfe/">PTFE Coating Wear Test</a> appeared first on <a href="https://nanovea.com/fr">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">TEST D&#039;USURE DU REVÊTEMENT PTFE</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">UTILISATION DU TRIBOMETRE ET DU TESTEUR MECANIQUE</h2>				</div>
				</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="ESSAI D&#039;USURE DU REVÊTEMENT PTFE" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Préparé par</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">INTRODUCTION</h2>				</div>
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									<p><span class="fontstyle0">Le polytétrafluoroéthylène (PTFE), communément appelé Téflon, est un polymère doté d&#039;un coefficient de frottement (COF) exceptionnellement bas et d&#039;une excellente résistance à l&#039;usure, en fonction des charges appliquées. Le PTFE présente une inertie chimique supérieure, un point de fusion élevé de 327 °C (620 °F) et maintient une résistance, une ténacité et une autolubrification élevées à basses températures. La résistance exceptionnelle à l&#039;usure des revêtements PTFE les rend très recherchés dans un large éventail d&#039;applications industrielles, telles que l&#039;automobile, l&#039;aérospatiale, le médical et, notamment, les ustensiles de cuisine.</span></p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTANCE DE L&#039;ÉVALUATION QUANTITATIVE DES REVÊTEMENTS PTFE</h3>				</div>
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									<p>La combinaison d&#039;un très faible coefficient de frottement (COF), d&#039;une excellente résistance à l&#039;usure et d&#039;une inertie chimique exceptionnelle à des températures élevées fait du PTFE un choix idéal pour les revêtements de casseroles antiadhésifs. Pour améliorer encore ses processus mécaniques pendant la R&amp;D, ainsi que pour assurer un contrôle optimal de la prévention des dysfonctionnements et des mesures de sécurité dans le processus de contrôle qualité, il est crucial de disposer d&#039;une technique fiable d&#039;évaluation quantitative des processus tribomécaniques des revêtements PTFE. Un contrôle précis du frottement de surface, de l&#039;usure et de l&#039;adhérence des revêtements est essentiel pour garantir les performances prévues.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJECTIF DE MESURE</h2>				</div>
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									<p>Dans cette application, le processus d&#039;usure d&#039;un revêtement PTFE pour une poêle antiadhésive est simulé à l&#039;aide du tribomètre NANOVEA en mode linéaire alternatif.</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="NANOVEA TRIBOMETRE : Essai d&#039;abrasivité du calcaire et du marbre" />								</a>
															</div>
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				<div class="elementor-element elementor-element-7625a79 elementor-widget elementor-widget-text-editor" data-id="7625a79" 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;">T50 Compact</span> <br>
Tribomètre à poids libre</p>								</div>
				</div>
				<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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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://nanovea.com/t50-tribometer-brochure-form/" id="button-brochure">
						<span class="elementor-button-content-wrapper">
									<span class="elementor-button-text">TÉLÉCHARGER LA BROCHURE</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">OBTENIR UN DEVIS</span>
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				</div>
					</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>De plus, le testeur mécanique NANOVEA a été utilisé pour effectuer un test d&#039;adhérence aux micro-rayures afin de déterminer la charge critique de la défaillance de l&#039;adhérence du revêtement 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="NANOVEA SCRATCH TESTER : TEST D&#039;USURE DU REVÊTEMENT 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 Grande plate-forme</span>
Testeur Méchanique</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">
				<div class="elementor-widget-container">
									<div class="elementor-button-wrapper">
					<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">TÉLÉCHARGER LA BROCHURE</span>
					</span>
					</a>
				</div>
								</div>
				</div>
				<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">OBTENIR UN DEVIS</span>
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				</div>
					</div>
		</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">PROCÉDURE DE TEST</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">TEST D'USURE</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">USURE LINÉAIRE ALTERNATIVE À L&#039;AIDE D&#039;UN TRIBOMÈTRE</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>Le comportement tribologique de l&#039;échantillon de revêtement PTFE, y compris le coefficient de frottement (COF) et la résistance à l&#039;usure, a été évalué à l&#039;aide du test NANOVEA. <a href="https://nanovea.com/tribometers/">Tribomètre </a>en mode alternatif linéaire. Une pointe sphérique en acier inoxydable 440 d&#039;un diamètre de 3 mm (grade 100) a été utilisée contre le revêtement. Le COF a été surveillé en permanence pendant le test d&#039;usure du revêtement PTFE.</p><p> </p><p>Le taux d&#039;usure, K, a été calculé à l&#039;aide de la formule K=V/(F×s)=A/(F×n), où V représente le volume usé, F est la charge normale, s est la distance de glissement, A est la surface de la section transversale de la piste d&#039;usure, et n est le nombre de courses. Les profils de traces d&#039;usure ont été évalués à l&#039;aide du NANOVEA <a href="https://nanovea.com/profilometers/">Profilomètre optique</a>, et la morphologie des traces d&#039;usure a été examinée à l&#039;aide d&#039;un microscope optique.</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">PARAMÈTRES DES ESSAIS D'USURE</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;">CHARGE</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;">DURÉE DU TEST</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>5 minutes</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TAUX GLISSANT</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>80 tr/min</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">AMPLITUDE DE PISTE </strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>8 millimètres</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">RÉVOLUTIONS</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;">DIAMÈTRE DE LA BOULE</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;">MATÉRIAU DE LA BOULE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Acier inoxydable 440</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">LUBRIFIANT</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Aucun</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">ATMOSPHÈRE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Air</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TEMPÉRATURE </strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>230C (TA)</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">HUMIDITÉ</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">PROCÉDURE DE TEST</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">TEST D'ÉRAFLURE</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">TEST D&#039;ADHÉRENCE MICRO SCRATCH À L&#039;AIDE D&#039;UN TESTEUR MÉCANIQUE</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>La mesure de l&#039;adhérence des rayures du PTFE a été réalisée à l&#039;aide du NANOVEA <a href="https://nanovea.com/mechanical-testers/">Testeur Méchanique</a> avec un stylet diamant 1200 Rockwell C (rayon de 200 μm) en mode 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 );">Afin d&#039;assurer la reproductibilité des résultats, trois tests ont été réalisés dans des conditions de test identiques.</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">PARAMÈTRES DE L'ESSAI DE GRATTAGE</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;">TYPE DE CHARGE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Progressif</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CHARGE INITIALE </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;">CHARGE FINALE</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;">TAUX DE CHARGEMENT</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>40 mN/min</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">LONGUEUR DU GRATTAGE</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;">VITESSE DE SCRATCHAGE, 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;">GÉOMÉTRIE DU PÉNÉTRATEUR</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;">MATÉRIAU DE L'INDENTATEUR (pointe)</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Diamant</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">RAYON DE LA POINTE DU PÉNÉTRATEUR </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">RÉSULTATS ET DISCUSSION</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">USURE LINÉAIRE ALTERNATIVE À L&#039;AIDE D&#039;UN TRIBOMÈTRE</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>Le COF enregistré in situ est présenté dans la FIGURE 1. L&#039;échantillon de test présentait un COF d&#039;environ 0,18 au cours des 130 premiers tours, en raison de la faible adhérence du PTFE. Cependant, il y a eu une augmentation soudaine du COF jusqu’à environ 1 une fois que le revêtement a percé, révélant le substrat situé en dessous. Suite aux essais linéaires alternatifs, le profil de la trace d&#039;usure a été mesuré à l&#039;aide du NANOVEA <a href="https://nanovea.com/profilometers/">Profilomètre optique sans contact</a>, comme le montre la FIGURE 2. À partir des données obtenues, le taux d&#039;usure correspondant a été calculé comme étant d&#039;environ 2,78 × 10-3 mm3/Nm, tandis que la profondeur de la trace d&#039;usure a été déterminée comme étant de 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="ÉTUDE DE L&#039;USURE DU REVÊTEMENT 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">
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									Configuration du test d&#039;usure du revêtement PTFE sur le tribomètre 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">
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															<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">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 1:</span><span class="fontstyle0" style="color: #000000;"> Évolution du COF lors du test d&#039;usure du revêtement 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="PTFE WEAR TEST" />															</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;">FIGURE 2 :</span><span class="fontstyle0" style="color: #000000;"> Extraction de proﬁl de piste d&#039;usure 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 Avant percée</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;">Max COF</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;">Min 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;">CAF moyen</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">
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				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">PTFE Après percée</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;">Max COF</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;">Min 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;">CAF moyen</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>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABLEAU 1 :</span><span class="fontstyle0" style="color: #000000;"> COF avant et après percée lors du test d&#039;usure.</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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					<h2 class="elementor-heading-title elementor-size-default">RÉSULTATS ET DISCUSSION</h2>				</div>
				</div>
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				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">TEST D&#039;ADHÉRENCE MICRO SCRATCH À L&#039;AIDE D&#039;UN TESTEUR MÉCANIQUE</h3>				</div>
				</div>
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									<p>L&#039;adhérence du revêtement PTFE au substrat est mesurée à l&#039;aide de tests de rayure avec un stylet en diamant de 200 µm. La micrographie est illustrée à la FIGURE 3 et à la FIGURE 4, Évolution du COF et de la profondeur de pénétration à la FIGURE 5. Les résultats du test de rayure du revêtement PTFE sont résumés dans le TABLEAU 4. Au fur et à mesure que la charge sur le stylet en diamant augmentait, il pénétrait progressivement dans le revêtement, entraînant une augmentation du COF. Lorsqu&#039;une charge d&#039;environ 8,5 N a été atteinte, la percée du revêtement et l&#039;exposition du substrat se sont produites sous haute pression, conduisant à un COF élevé d&#039;environ 0,3. Le faible St Dev indiqué dans le TABLEAU 2 démontre la répétabilité du test de rayure du revêtement PTFE effectué à l&#039;aide du testeur mécanique 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="TEST DE REVÊTEMENT 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">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 3 :</span><span class="fontstyle0" style="color: #000000;"> Micrographie de la rayure complète sur 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">
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															<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="ESSAI DE RAYURE DU REVÊTEMENT 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">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 4 :</span><span class="fontstyle0" style="color: #000000;"> Micrographie de la rayure complète sur 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="ESSAI DE FROTTEMENT DU REVÊTEMENT 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">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 5 :</span><span class="fontstyle0" style="color: #000000;"> Graphique de frottement montrant la ligne du point de rupture critique pour le 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>Test de rayure.</i></b></td>
<td style="width: 20%; height: 48px;"><b><i>Point de défaillance [N]</i></b></td>
<td style="width: 20%; height: 48px;"><b><i>Force de frottement [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;">Moyenne</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">
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">TABLEAU 2 :</span><span class="fontstyle0" style="color: #000000;"> Résumé de la charge critique, de la force de friction et du COF lors du test de rayure.</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">CONCLUSION</h2>				</div>
				</div>
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									<p>Dans cette étude, nous avons réalisé une simulation du processus d&#039;usure d&#039;un revêtement PTFE pour casseroles antiadhésives à l&#039;aide du tribomètre NANOVEA T50 en mode linéaire alternatif. Le revêtement PTFE présentait un faible COF d&#039;environ 0,18, le revêtement a connu une percée à environ 130 tours. L&#039;évaluation quantitative de l&#039;adhérence du revêtement PTFE au substrat métallique a été réalisée à l&#039;aide du testeur mécanique NANOVEA qui a déterminé que la charge critique de l&#039;échec de l&#039;adhérence du revêtement était d&#039;environ 8,5 N dans ce test.</p><p> </p><p>Les tribomètres NANOVEA offrent des capacités de test d&#039;usure et de frottement précises et reproductibles en utilisant les modes rotatifs et linéaires conformes aux normes ISO et ASTM. Ils fournissent des modules optionnels pour l&#039;usure à haute température, la lubrification et la tribocorrosion, tous intégrés dans un système unique. Cette polyvalence permet aux utilisateurs de simuler avec plus de précision des environnements d&#039;application réels et de mieux comprendre les mécanismes d&#039;usure et les propriétés tribologiques de diﬀérents matériaux.</p><p> </p><p>Les testeurs mécaniques NANOVEA proposent des modules Nano, Micro et Macro, chacun comprenant des modes de test d&#039;indentation, de rayure et d&#039;usure conformes aux normes ISO et ASTM, offrant la gamme de capacités de test la plus large et la plus conviviale disponible dans un seul système.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/fr/test-dusure-du-revetement-ptfe/">PTFE Coating Wear Test</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Cartographie de l'usure progressive des revêtements de sol à l'aide d'un tribomètre</title>
		<link>https://nanovea.com/fr/cartographie-de-lusure-progressive-des-revetements-de-sol-a-laide-du-tribometre/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=progressive-wear-mapping-of-flooring-using-tribometer</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>mar. 06 juin 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 Prepared by FRANK LIU INTRODUCTION Flooring materials are designed to be durable, but they often suﬀer wear and tear from everyday activities such as movement and furniture use. To ensure their longevity, most types of ﬂooring have a protective wear layer that [&#8230;]</p>
<p>The post <a href="https://nanovea.com/fr/cartographie-de-lusure-progressive-des-revetements-de-sol-a-laide-du-tribometre/">Progressive Wear Mapping of Flooring using Tribometer</a> appeared first on <a href="https://nanovea.com/fr">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">Essai d'usure des revêtements de sol</h1>				</div>
				</div>
				<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">Cartographie progressive de l'usure des revêtements de sol à l'aide d'un tribomètre avec profilomètre intégré</h2>				</div>
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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="test d&#039;usure des revêtements de sol" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Préparé par</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">FRANK LIU</h2>				</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-9e6921f elementor-section-content-middle elementor-reverse-mobile elementor-reverse-tablet elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="9e6921f" 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">INTRODUCTION</h2>				</div>
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									<p>Les matériaux de revêtement de sol sont conçus pour être durables, mais ils subissent souvent l&#039;usure due aux activités quotidiennes telles que les déplacements et l&#039;utilisation des meubles. Pour garantir leur longévité, la plupart des types de revêtements de sol sont dotés d&#039;une couche d&#039;usure protectrice qui résiste aux dommages. Cependant, l&#039;épaisseur et la durabilité de la couche d&#039;usure varient en fonction du type de revêtement de sol et du niveau de circulation piétonnière. De plus, les différentes couches de la structure du revêtement de sol, telles que les revêtements UV, les couches décoratives et les vernis, ont des taux d&#039;usure variables. C&#039;est là qu&#039;intervient la cartographie de l&#039;usure progressive. En utilisant le tribomètre NANOVEA T2000 avec un <a style="background-color: #ffffff;" href="https://nanovea.com/profilometers/">Profilomètre 3D sans contact</a>, une surveillance et une analyse précises des performances et de la longévité des matériaux de revêtement de sol peuvent être effectuées. En fournissant des informations détaillées sur le comportement à l&#039;usure de divers matériaux de revêtement de sol, les scientifiques et les professionnels techniques peuvent prendre des décisions plus éclairées lors de la sélection et de la conception de nouveaux systèmes de revêtement de sol.</p>								</div>
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					<h3 class="elementor-heading-title elementor-size-default">IMPORTANCE DE LA CARTOGRAPHIE DE L'USURE PROGRESSIVE POUR LES PANNEAUX DE SOL</h3>				</div>
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									<p>Les essais de revêtements de sol sont traditionnellement axés sur le taux d'usure d'un échantillon pour déterminer sa résistance à l'usure. Cependant, la cartographie de l'usure progressive permet d'analyser le taux d'usure de l'échantillon tout au long du test, ce qui fournit des informations précieuses sur le comportement de l'échantillon face à l'usure. Cette analyse approfondie permet d'établir des corrélations entre les données de frottement et le taux d'usure, ce qui permet d'identifier les causes profondes de l'usure. Il convient de noter que les taux d'usure ne sont pas constants tout au long des essais d'usure. Ainsi, l'observation de la progression de l'usure donne une évaluation plus précise de l'usure de l'échantillon. Dépassant les méthodes d'essai traditionnelles, l'adoption de la cartographie de l'usure progressive a contribué à des avancées significatives dans le domaine des essais de revêtements de sol.</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>Le tribomètre NANOVEA T2000 avec profilomètre 3D sans contact intégré est une solution révolutionnaire pour les tests d&#039;usure et les mesures de perte de volume. Sa capacité à se déplacer avec précision entre la goupille et le profilomètre garantit la fiabilité des résultats en éliminant tout écart de rayon ou d&#039;emplacement des traces d&#039;usure. Mais ce n&#039;est pas tout : les capacités avancées du profilomètre 3D sans contact permettent des mesures de surface à grande vitesse, réduisant le temps de numérisation à quelques secondes seulement. Avec la capacité d&#039;appliquer des charges allant jusqu&#039;à 2 000 N et d&#039;atteindre des vitesses d&#039;essorage allant jusqu&#039;à 5 000 tr/min, le NANOVEA T2000 <a href="https://nanovea.com/tribometers/">Tribomètre</a> offre polyvalence et précision dans le processus d’évaluation. Il est clair que cet équipement joue un rôle essentiel dans la cartographie de l&#039;usure progressive.</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="Essai d&#039;usure des revêtements de sol à l&#039;aide d&#039;un tribomètre" />															</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="Essai d&#039;usure des revêtements de sol à l&#039;aide d&#039;un profilomètre" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 1:</span><span class="fontstyle0" style="color: #000000;"> Montage de l'échantillon avant l'essai d'usure
(à gauche) et profilométrie de la piste d'usure après l'essai d'usure (à droite).</span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">OBJECTIF DE MESURE</h2>				</div>
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									<p>Des tests de cartographie d'usure progressive ont été réalisés sur deux types de revêtements de sol : la pierre et le bois. Chaque échantillon a subi un total de 7 cycles de test, avec des durées de test croissantes de 2, 4, 8, 20, 40, 60 et 120 s, permettant une comparaison de l'usure dans le temps. Après chaque cycle d'essai, la piste d'usure a été profilée à l'aide du profilomètre sans contact NANOVEA 3D. À partir des données recueillies par le profileur, le volume du trou et le taux d'usure peuvent être analysés à l'aide des fonctions intégrées dans le logiciel NANOVEA Tribometer ou dans notre logiciel d'analyse de surface, Mountains.</p>								</div>
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				<section class="elementor-section elementor-inner-section elementor-element elementor-element-70c1928 elementor-reverse-mobile elementor-section-full_width elementor-reverse-tablet elementor-section-height-default elementor-section-height-default" data-id="70c1928" data-element_type="section">
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									<p style="text-align: center; font-size: 20pt; color: black;">NANOVEA <span style="font-size: 20pt; color: #1b96cf;">T2000 Haute charge</span><br />Tribomètre pneumatique</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="Tribomètre pneumatique à haute charge NANOVEA T2000" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">LES ÉCHANTILLONS</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="échantillons de test de cartographie d&#039;usure pour le bois et la pierre" />															</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">PARAMÈTRES DE L'ESSAI DE CARTOGRAPHIE DE L'USURE</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;">CHARGE</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;">DURÉE DU TEST</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>varie</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">VITESSE</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>200 tr/min</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;">DISTANCE</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>varie</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">MATÉRIAU DE LA BOULE</strong></em></td><td style="width: 52.497%; text-align: right;"><em><strong>Carbure de tungstène</strong></em></td></tr><tr><td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DIAMÈTRE DE LA BOULE</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;">Les durées d'essai utilisées au cours des 7 cycles étaient les suivantes <span class="fontstyle0" style="color: #1b96cf;">2, 4, 8, 20, 40, 60 et 120 secondes</span>respectivement.
Les distances parcourues étaient les suivantes <span class="fontstyle0" style="color: #1b96cf;">0,40, 0,81, 1,66, 4,16, 8,36, 12,55 et 25,11 mètres.</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">RÉSULTATS DE LA CARTOGRAPHIE DE L'USURE</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">Parquet</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">
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									<table style="border-collapse: collapse; width: 90.0426%; height: 216px;"><tbody><tr style="height: 48px;"><td style="width: 20%; height: 48px;"><b><i>Cycle d'essai</i></b></td><td style="width: 20%; height: 48px;"><b><i>Max COF</i></b></td><td style="width: 20%; height: 48px;"><b><i>Min 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;">ORIENTATION RADIALE</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>Cycle d'essai</i></b></td><td style="width: 20%; height: 102px;"><b><i>Perte totale de volume (µm3)</i></b></td><td style="width: 20%; height: 102px;"><b><i>Distance totale<br />Parcouru (m)</i></b></td><td style="width: 19.723%; height: 102px;"><b><i>Taux d'usure<br />(mm/Nm) x10<sup>-5</sup></i></b></td><td style="width: 19.3314%; height: 102px;"><b><i>Taux d'usure instantané<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="taux d&#039;usure progressive du bois par rapport à la distance totale" />															</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="Taux d&#039;usure des planchers en bois" />															</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;">FIGURE 2 :</span><span class="fontstyle0" style="color: #000000;"> Taux d'usure en fonction de la distance totale parcourue (gauche)<br />et taux d'usure instantanée en fonction du cycle d'essai (à droite) pour les revêtements de sol en bois.</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="Essai du coefficient de frottement des revêtements de sol" />															</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="cartographie de l&#039;usure progressive des sols en bois" />															</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;">FIGURE 3 :</span><span class="fontstyle0" style="color: #000000;"> Graphique COF et vue 3D de la trace d'usure de l'essai #7 sur un revêtement de sol en bois.</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="cartographie de l&#039;usure profil extrait" />															</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="résultats des essais d&#039;usure des revêtements de sol" />															</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="caractérisation de la surface du revêtement de sol" />															</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;">FIGURE 4 :</span><span class="fontstyle0" style="color: #000000;"> Analyse transversale de la piste d'usure en bois de l'essai #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="cartographie de l&#039;usure progressive analyse du volume et de la surface" />															</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;">FIGURE 5 :</span><span class="fontstyle0" style="color: #000000;"> Analyse du volume et de la surface de la trace d'usure sur l'échantillon de bois Test #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;">Pour connaître tous les résultats, cliquez ici.</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">RÉSULTATS DE LA CARTOGRAPHIE DE L'USURE</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">Sol en pierre</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>Cycle d'essai</i></b></td><td style="width: 20%; height: 48px;"><b><i>Max COF</i></b></td><td style="width: 20%; height: 48px;"><b><i>Min 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;">ORIENTATION RADIALE</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>Cycle d'essai</i></b></td><td style="width: 20%; height: 102px;"><b><i>Perte totale de volume (µm3)</i></b></td><td style="width: 20%; height: 102px;"><b><i>Distance totale<br />Parcouru (m)</i></b></td><td style="width: 19.723%; height: 102px;"><b><i>Taux d'usure<br />(mm/Nm) x10<sup>-5</sup></i></b></td><td style="width: 19.3314%; height: 102px;"><b><i>Taux d'usure instantané<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="taux d&#039;usure des revêtements de sol en pierre par rapport à la distance" />															</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="tableau du taux d&#039;usure instantanée des revêtements de sol en pierre" />															</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;">FIGURE 6 :</span><span class="fontstyle0" style="color: #000000;"> Taux d'usure en fonction de la distance totale parcourue (gauche)<br />et taux d'usure instantané en fonction du cycle d'essai (à droite) pour un revêtement de sol en pierre.</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">
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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="Essais tribologiques sur l&#039;usure des revêtements de sol" />															</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="sol en pierre profil 3d de la piste d&#039;usure" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 7 :</span><span class="fontstyle0" style="color: #000000;"> Graphique COF et vue 3D de la piste d'usure de l'essai #7 sur un revêtement de sol en pierre.</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="profil extrait de la cartographie de l&#039;usure progressive du sol en pierre" />															</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="revêtement de sol en pierre profil extrait profondeur et hauteur maximales surface du trou et du sommet" />															</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="Essais tribologiques sur les revêtements de sol" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 8 :</span><span class="fontstyle0" style="color: #000000;"> Analyse transversale de la piste d'usure en pierre de l'essai #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="analyse du volume de la cartographie de l&#039;usure progressive des sols en bois" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 9 :</span><span class="fontstyle0" style="color: #000000;"> Analyse du volume et de la surface des traces d'usure sur l'échantillon de pierre #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;">Pour connaître tous les résultats, cliquez ici.</span><br /></a></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">DISCUSSION</h2>				</div>
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									Le taux d'usure instantané est calculé à l'aide de l'équation suivante :
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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="cartographie de l&#039;usure progressive de la formule de revêtement de sol" />															</div>
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									<p>Où V est le volume d'un trou, N est la charge et X est la distance totale, cette équation décrit le taux d'usure entre les cycles d'essai. Le taux d'usure instantané peut être utilisé pour mieux identifier les changements du taux d'usure tout au long de l'essai.</p><p>Les deux échantillons ont des comportements d'usure très différents. Au fil du temps, le revêtement de sol en bois commence par présenter un taux d'usure élevé, mais diminue rapidement pour atteindre une valeur plus faible et stable. Pour le revêtement de sol en pierre, le taux d'usure semble commencer par une valeur faible et tendre vers une valeur plus élevée au fil des cycles. Le taux d'usure instantané est également peu cohérent. La raison spécifique de cette différence n'est pas certaine, mais elle peut être due à la structure des échantillons. Le revêtement de sol en pierre semble être constitué de particules lâches ressemblant à des grains, qui s'useraient différemment par rapport à la structure compacte du bois. Des tests et des recherches supplémentaires seraient nécessaires pour déterminer la cause de ce comportement d'usure.</p><p>Les données relatives au coefficient de frottement (COF) semblent correspondre au comportement d'usure observé. Le graphique du COF pour le revêtement de sol en bois semble cohérent tout au long des cycles, complétant son taux d'usure régulier. Pour le revêtement de sol en pierre, le COF moyen augmente tout au long des cycles, de la même manière que le taux d'usure augmente également avec les cycles. On observe également des changements apparents dans la forme des graphiques de frottement, ce qui suggère des changements dans la manière dont la bille interagit avec l'échantillon de pierre. Ces changements sont particulièrement visibles dans les cycles 2 et 4.</p>								</div>
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									<p>Le tribomètre NANOVEA T2000 démontre sa capacité à réaliser une cartographie de l'usure progressive en analysant le taux d'usure entre deux échantillons de revêtements de sol différents. La pause du test d'usure continue et le balayage de la surface avec le profilomètre sans contact NANOVEA 3D fournissent des informations précieuses sur le comportement d'usure du matériau au fil du temps.</p><p>Le tribomètre NANOVEA T2000 avec le profilomètre 3D sans contact intégré fournit une grande variété de données, y compris les données COF (coefficient de frottement), les mesures de surface, les relevés de profondeur, la visualisation de la surface, la perte de volume, le taux d'usure, et bien plus encore. Cet ensemble complet d'informations permet aux utilisateurs de mieux comprendre les interactions entre le système et l'échantillon. Avec son chargement contrôlé, sa haute précision, sa facilité d'utilisation, son chargement élevé, sa large plage de vitesse et ses modules environnementaux supplémentaires, le tribomètre NANOVEA T2000 fait passer la tribologie au niveau supérieur.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/fr/cartographie-de-lusure-progressive-des-revetements-de-sol-a-laide-du-tribometre/">Progressive Wear Mapping of Flooring using Tribometer</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Analyse mécanique dynamique du liège par nanoindentation</title>
		<link>https://nanovea.com/fr/analyse-mecanique-dynamique-du-liege-par-nanoindentation/?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>mer. 17 mai 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>
		<category><![CDATA[Laboratory Testing]]></category>
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		<guid ispermalink="false">https://nanovea.com/?p=22101</guid>

					<description><![CDATA[<p>DYNAMIC MECHANICAL ANALYSIS OF CORK USING NANOINDENTATION Prepared by FRANK LIU INTRODUCTION Dynamic Mechanical Analysis (DMA) is a powerful technique used to investigate the mechanical properties of materials. In this application, we focus on the analysis of cork, a widely used material in wine sealing and aging processes. Cork, obtained from the bark of the [&#8230;]</p>
<p>The post <a href="https://nanovea.com/fr/analyse-mecanique-dynamique-du-liege-par-nanoindentation/">Dynamic Mechanical Analysis of Cork Using Nanoindentation</a> appeared first on <a href="https://nanovea.com/fr">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">ANALYSE MÉCANIQUE DYNAMIQUE</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">DU LIÈGE PAR NANOINDENTATION
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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">Préparé par</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">FRANK LIU</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUCTION</h2>				</div>
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									<p>L'analyse mécanique dynamique (DMA) est une technique puissante utilisée pour étudier les propriétés mécaniques des matériaux. Dans cette application, nous nous concentrons sur l'analyse du liège, un matériau largement utilisé dans les processus de scellage et de vieillissement du vin. Le liège, obtenu à partir de l'écorce du chêne Quercus suber, présente des structures cellulaires distinctes qui lui confèrent des propriétés mécaniques semblables à celles des polymères synthétiques. Dans un axe, le liège a une structure en nid d'abeille. Les deux autres axes sont structurés en de multiples prismes rectangulaires. Cela confère au liège des propriétés mécaniques diﬀérentes en fonction de l'orientation testée.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">IMPORTANCE DES ESSAIS D'ANALYSE MÉCANIQUE DYNAMIQUE (AMD) DANS L'ÉVALUATION DES PROPRIÉTÉS MÉCANIQUES DU LIÈGE</h2>				</div>
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									<p>La qualité des bouchons dépend en grande partie de leurs propriétés mécaniques et physiques, qui sont cruciales pour leur eﬀectivité dans le bouchage du vin. Les facteurs clés qui déterminent la qualité du liège sont la ﬂexibilité, l'isolation, la résilience et l'imperméabilité aux gaz et aux liquides. En utilisant l'analyse mécanique dynamique (DMA), nous pouvons évaluer quantitativement les propriétés de ﬂexibilité et de résilience des bouchons, fournissant ainsi une méthode d'évaluation fiable.</p><p>L'appareil d'essai mécanique NANOVEA PB1000 dans le secteur de l'agriculture et de l'élevage. <a href="https://nanovea.com/nano-indentation-tester/">Nanoindentation</a> permet de caractériser ces propriétés, en particulier le module de Young, le module de stockage, le module de perte et le tan delta (tan (δ)). Les essais DMA permettent également de recueillir des données précieuses sur le déphasage, la dureté, la contrainte et la déformation du matériau liège. Ces analyses complètes nous permettent de mieux comprendre le comportement mécanique des bouchons et leur adéquation aux applications de bouchage du vin.</p>								</div>
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									<p style="text-align: left;">OBJECTIF DE MESURE</p>								</div>
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									<p>Dans cette étude, nous avons effectué une analyse mécanique dynamique (DMA) sur quatre bouchons de liège en utilisant le testeur mécanique NANOVEA PB1000 en mode nanoindentation. La qualité des bouchons de liège est étiquetée comme suit : 1 - Flor, 2 - First, 3 - Colm : 1 - Flor, 2 - Premier, 3 - Colmaté, 4 - Caoutchouc synthétique. Des tests d'indentation DMA ont été effectués dans les directions axiale et radiale pour chaque bouchon de liège. En analysant la réponse mécanique des bouchons de liège, nous avons cherché à comprendre leur comportement dynamique et à évaluer leurs performances dans des orientations différentes.</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">EN SAVOIR PLUS</span>
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																<a href="https://nanovea.com/instruments/pb1000/">
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					<h2 class="elementor-heading-title elementor-size-default">PARAMÈTRES D'ESSAI</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;">FORCE MAXIMALE</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;">TAUX DE CHARGEMENT</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;">TAUX DE DÉCHARGEMENT</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;">FRÉQUENCE</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;">type de pénétrateur</span></p><p><span style="line-height: 1.2em; color: #1b96cf; text-align: center; font-weight: bold; font-size: 2em; font-style: italic;">Boule</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 Acier</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 diamètre</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">RÉSULTATS</h2>				</div>
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									<p style="text-align: left;">Dans les tableaux et les graphiques ci-dessous, le module de Young, le module de stockage, le module de perte et le tan delta sont comparés entre chaque échantillon et chaque orientation.</p><p style="text-align: left;"><b><i>Module d'Young : </i></b>Stiﬀness ; des valeurs élevées indiquent la stiﬀ, des valeurs faibles indiquent la ﬂexibilité.</p><p style="text-align: left;"><b><i>Module de stockage : </i></b>Réponse élastique ; énergie stockée dans le matériau.</p><p style="text-align: left;"><b><i>Module de perte : </i></b>Réponse visqueuse ; perte d'énergie due à la chaleur.</p><p style="text-align: left;"><b><i>Tan (δ) : </i></b>Amortissement ; des valeurs élevées indiquent un amortissement plus important.</p><p><em><strong style="color: #1b96cf;">ORIENTATION AXIALE</strong></em></p><table style="border-collapse: collapse; width: 98.7212%; height: 8px;"><tbody><tr><td style="width: 20%;"><b><i>Bouchon</i></b></td><td style="width: 20%;"><b><i>MODULE DE YOUNG</i></b></td><td style="width: 20%;"><b><i>MODULE DE STOCKAGE</i></b></td><td style="width: 20%;"><b><i>MODULE DE PERTE</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;">ORIENTATION RADIALE</strong></em></p><table style="border-collapse: collapse; width: 98.7212%; height: 8px;"><tbody><tr><td style="width: 20%;"><b><i>Bouchon</i></b></td><td style="width: 20%;"><b><i>MODULE DE YOUNG</i></b></td><td style="width: 20%;"><b><i>MODULE DE STOCKAGE</i></b></td><td style="width: 20%;"><b><i>MODULE DE PERTE</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>MODULE 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>MODULE DE STOCKAGE</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>MODULE DE PERTE</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 les bouchons, le module de Young n'est pas très différent lorsqu'il est testé dans l'orientation axiale. Seuls les bouchons #2 et #3 présentent une différence apparente de module d'Young entre la direction radiale et la direction axiale. Par conséquent, le module de stockage et le module de perte seront également plus élevés dans la direction radiale que dans la direction axiale. Le bouchon #4 présente des caractéristiques similaires à celles des bouchons en liège naturel, à l'exception du module de perte. Ceci est très intéressant car cela signifie que le liège naturel a une propriété plus visqueuse que le caoutchouc synthétique.</p>								</div>
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									<p>La NANOVÉA <a href="https://nanovea.com/mechanical-testers/">Testeur Méchanique</a> en mode Nano Scratch Tester, il permet de simuler de nombreuses défaillances réelles des revêtements de peinture et des couches dures. En appliquant des charges croissantes de manière contrôlée et étroitement surveillée, l&#039;instrument permet d&#039;identifier à quel moment les défaillances de charge se produisent. Cela peut ensuite être utilisé pour déterminer des valeurs quantitatives de résistance aux rayures. Le revêtement testé, sans altération, est connu pour présenter une première fissure vers 22 mN. Avec des valeurs plus proches de 5 mN, il est clair que le passage de 7 ans a dégradé la peinture.</p>
<p>La compensation du profil original permet d'obtenir une profondeur corrigée pendant la rayure et de mesurer la profondeur résiduelle après la rayure. Cela donne des informations supplémentaires sur le comportement plastique ou élastique du revêtement sous l'effet d'une charge croissante. La fissuration et les informations sur la déformation peuvent être très utiles pour améliorer la couche dure. Les écarts types très faibles montrent également la reproductibilité de la technique de l'instrument, ce qui peut aider les fabricants à améliorer la qualité de leur couche dure/peinture et à étudier les eﬀets des intempéries.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/fr/analyse-mecanique-dynamique-du-liege-par-nanoindentation/">Dynamic Mechanical Analysis of Cork Using Nanoindentation</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Nano Scratch &amp; Mar Testing of Paint on Metal Substrate (Essais de rayures et de marques sur des substrats métalliques)</title>
		<link>https://nanovea.com/fr/test-nano-scratch-mar-de-la-peinture-sur-un-substrat-metallique/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=nano-scratch-mar-testing-of-paint-on-metal-substrate</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>mar. 2 mai 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 &#38; Mar Testing of Paint on Metal Substrate Prepared by SUSANA CABELLO INTRODUCTION Paint with or without hard coat is one of the most commonly used coatings. We see it on cars, on walls, on appliances and virtually anything that needs some protective coatings or simply for aesthetic purposes. The paints that are [&#8230;]</p>
<p>The post <a href="https://nanovea.com/fr/test-nano-scratch-mar-de-la-peinture-sur-un-substrat-metallique/">Nano Scratch &#038; Mar Testing of Paint on Metal Substrate</a> appeared first on <a href="https://nanovea.com/fr">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">Nano Scratch &amp; Mar Testing</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">de la peinture sur le substrat métallique</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">Préparé par</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">INTRODUCTION</h2>				</div>
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									<p>La peinture, avec ou sans couche dure, est l'un des revêtements les plus couramment utilisés. On la trouve sur les voitures, les murs, les appareils électroménagers et pratiquement tout ce qui a besoin d'un revêtement protecteur ou simplement à des fins esthétiques. Les peintures destinées à protéger le support sous-jacent contiennent souvent des produits chimiques qui empêchent la peinture de s'enflammer ou simplement de perdre sa couleur ou de se craqueler. Souvent, la peinture utilisée à des fins esthétiques est disponible en différentes couleurs, mais elle n'est pas nécessairement destinée à la protection du support ou à une longue durée de vie.</p><p>Néanmoins, toutes les peintures subissent des altérations au fil du temps. Les intempéries peuvent souvent modifier les propriétés de la peinture par rapport à ce que les fabricants avaient prévu. Elle peut s'écailler plus rapidement, se décoller à la chaleur, perdre sa couleur ou se fissurer. Les diﬀérents changements de propriétés de la peinture au fil du temps expliquent pourquoi les fabricants oﬀrent un si large choix. Les peintures sont conçues pour répondre aux différentes exigences des clients.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">L'IMPORTANCE DES ESSAIS PAR NANO-RAYURES POUR LE CONTRÔLE DE LA QUALITÉ</h2>				</div>
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									<p>L'une des principales préoccupations des fabricants de peinture est la capacité de leur produit à résister aux craquelures. Lorsque la peinture commence à se craqueler, elle ne protège plus le support sur lequel elle a été appliquée et ne satisfait donc plus le client. Par exemple, si une branche frappe le côté d'une voiture et que la peinture commence immédiatement à s'écailler, les fabricants de peinture perdront des clients en raison de la mauvaise qualité de leur peinture. La qualité de la peinture est très importante car si le métal sous la peinture est exposé, il peut commencer à rouiller ou à se corroder en raison de cette nouvelle exposition.</p><p> </p><p>Ces raisons s'appliquent à plusieurs autres domaines tels que les articles ménagers et de bureau, l'électronique, les jouets, les outils de recherche et bien d'autres encore. Bien que la peinture puisse être résistante à la fissuration lorsqu'elle est appliquée pour la première fois sur des revêtements métalliques, ses propriétés peuvent changer au fil du temps lorsque l'échantillon a subi des intempéries. C'est pourquoi il est très important de tester les échantillons de peinture à leur stade d'altération. Bien que la fissuration sous une forte contrainte soit inévitable, le fabricant doit prévoir à quel point les changements peuvent s'affaiblir avec le temps et quelle doit être la profondeur de la rayure d'aﬀectation afin de fournir à ses consommateurs les meilleurs produits possibles.</p>								</div>
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									<p style="text-align: left;">OBJECTIF DE MESURE</p>								</div>
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									<p>Nous devons simuler le processus de grattage de manière contrôlée et surveillée pour observer les eﬀets du comportement de l'échantillon. Dans cette application, le testeur mécanique NANOVEA PB1000 en mode Nano Scratch Testing est utilisé pour mesurer la charge nécessaire pour provoquer la rupture d'un échantillon de peinture de 30 à 50 μm d'épaisseur sur un substrat métallique, vieux d'environ 7 ans.</p>								</div>
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									<p><em>Un stylet à pointe diamantée de 2 μm est utilisé avec une charge progressive allant de 0,015 mN à 20,00 mN pour rayer le revêtement. Nous avons effectué un balayage préalable et postérieur de la peinture avec une charge de 0,2 mN afin de déterminer la valeur de la profondeur réelle de la rayure. La profondeur réelle analyse la déformation plastique et élastique de l'échantillon pendant l'essai, tandis que le balayage a posteriori n'analyse que la déformation plastique de la rayure. Le point où le revêtement se fissure est considéré comme le point de rupture. Nous avons utilisé l'ASTMD7187 comme guide pour déterminer nos paramètres d'essai.</em></p><p><em> </em></p><p><em>Nous pouvons conclure que le fait d'avoir utilisé un échantillon altéré, et donc d'avoir testé un échantillon de peinture à son stade le plus faible, nous a permis d'obtenir des points de défaillance moins élevés.</em></p><p><em> </em></p><p><em>Cinq tests ont été effectués sur cet échantillon afin de</em></p><p><em>déterminer les charges critiques de rupture exactes.</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">EN SAVOIR PLUS</span>
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																<a href="https://nanovea.com/instruments/pb1000/">
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					<h2 class="elementor-heading-title elementor-size-default">PARAMÈTRES D'ESSAI</h2>				</div>
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									<p style="text-align: center;"><b><i>suivants</i></b><b><i> ASTM D7027</i></b></p>								</div>
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									<p style="text-align: left;">La surface d'un étalon de rugosité a été scannée à l'aide d'un NANOVEA ST400 équipé d'un capteur à grande vitesse qui génère une ligne lumineuse de 192 points, comme le montre la FIGURE 1. Ces 192 points balayent la surface de l'échantillon en même temps, ce qui augmente considérablement la vitesse de balayage.</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;">TYPE DE CHARGE</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>Progressif</strong></em></td>
</tr>
<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">CHARGE INITIALE</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;">CHARGE FINALE</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;">TAUX DE CHARGEMENT</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;">LONGUEUR DU GRATTAGE</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;">VITESSE DE RACHAT, 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;">PRE-SCAN LOAD</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;">CHARGEMENT POST-SCAN</strong></em></td>
<td style="width: 52.497%; text-align: right;"><em><strong>0,2 mN</strong></em></td>
</tr>
</tbody>
</table>								</div>
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															<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="Pénétrateur conique 90° Cône 2 µm rayon de la pointe" />															</div>
				</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;">type de pénétrateur</span><br /><br /><span style="line-height: 1.2em; color: #1b96cf; text-align: center; font-weight: bold; font-size: 2em; font-style: italic;">Conique</span><br /><br /><span style="line-height: 1.2em; color: #1b96cf; text-align: center; font-weight: bold; font-size: 1.5em; font-style: italic;">Cône 90° diamant</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;">2 µm rayon de la pointe</span></p>								</div>
				</div>
					</div>
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															<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="Pénétrateur conique Diamond 90° Cone 2 µm rayon de la pointe" />															</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">RÉSULTATS</h2>				</div>
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									<p style="text-align: left;">Cette section présente les données recueillies sur les défaillances au cours de l'essai de rayage. La première section décrit les défaillances observées lors de l'essai de rayage et définit les charges critiques qui ont été signalées. La partie suivante contient un tableau récapitulatif des charges critiques pour tous les échantillons, ainsi qu'une représentation graphique. La dernière partie présente les résultats détaillés pour chaque échantillon : les charges critiques pour chaque rayure, les micrographies de chaque défaillance et le graphique du test.</p>								</div>
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									<p><strong><em>DÉFAILLANCES OBSERVÉES ET DÉFINITION DES CHARGES CRITIQUES</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>L'ÉCHEC CRITIQUE :</em></strong></p>								</div>
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									<p><strong><em>DOMMAGES INITIAUX</em></strong></p>								</div>
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									<p>C'est le premier point où les dommages sont observés le long de la piste de grattage.</p>								</div>
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															<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 rayure défaillance critique dommage initial" />															</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">
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									<p><strong><em>L'ÉCHEC CRITIQUE :</em></strong></p>								</div>
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									<p><strong><em>DOMMAGE COMPLET</em></strong></p>								</div>
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									<p>À ce stade, les dégâts sont plus importants : la peinture s'écaille et se fissure le long de la ligne de démarcation.</p>								</div>
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															<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 rayure défaillance critique dommage complet" />															</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">
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									<p><strong><em>RÉSULTATS DÉTAILLÉS</em></strong></p>								</div>
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									<p><strong><em>* Les valeurs de rupture sont prises au point de fissuration du substrat.</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;">CHARGES CRITIQUES</strong></em></td>
</tr>
<tr style="height: 72px;">
<td style="width: 23.333%;  text-align: center; height: 72px;"><em><strong style="color: #1b96cf;">RAYURE</strong></em></td>
<td style="width: 33.3333%; text-align: CENTER; height: 72px;"><em><strong style="color: #1b96cf;">Dommage initial [mN]</strong></em></td>
<td style="width: 44.8155%; text-align: CENTER; height: 72px;"><em><strong style="color: #1b96cf;">DOMMAGE COMPLET [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;">MOYENNE</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="Micrographie de l&#039;éraflure complète du test de l&#039;éraflure nanométrique (magniﬁcation 1000x)." />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 2 :</span><span class="fontstyle0" style="color: #000000;"> Micrographie d'une rayure complète (magniﬁcation 1000x).</span></p>								</div>
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					</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="Micrographie des dommages initiaux causés par le test de rayure nanométrique (magniﬁcation 1000x)" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 3 :</span><span class="fontstyle0" style="color: #000000;"> Micrographie des dommages initiaux (magniﬁcation 1000x).</span></p>								</div>
				</div>
					</div>
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				<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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															<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="Micrographie des dommages complets causés par le test de rayure nanométrique (magniﬁcation 1000x)." />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 4 :</span><span class="fontstyle0" style="color: #000000;"> Micrographie d'un dommage complet (magniﬁcation 1000x).</span></p>								</div>
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		</section>
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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="Force de frottement et Coeﬃcient de frottement de l&#039;essai de grattage nano linéaire" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 5 :</span><span class="fontstyle0" style="color: #000000;"> Force de frottement et Coeﬃcient de frottement.</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/Friction-Force-and-COF-on-Paint.jpg" class="attachment-large size-large wp-image-22044" alt="Profil de la surface de grattage nanométrique linéaire" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 6 :</span><span class="fontstyle0" style="color: #000000;"> Profil de surface.</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="Linear Nano Scratch Test True Depth and Residual Depth (profondeur réelle et résiduelle)" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURE 7 :</span><span class="fontstyle0" style="color: #000000;"> Profondeur réelle et profondeur résiduelle.</span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSION</h2>				</div>
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									<p>La NANOVÉA <a href="https://nanovea.com/mechanical-testers/">Testeur Méchanique</a> dans le <a href="https://nanovea.com/scratch-tester/">Testeur de rayures Nano</a> permet de simuler de nombreuses défaillances réelles de revêtements de peinture et de couches dures. En appliquant des charges croissantes de manière contrôlée et étroitement surveillée, l'instrument permet d'identifier à quelle charge les défaillances se produisent. Cela permet ensuite de déterminer des valeurs quantitatives pour la résistance aux rayures. On sait que le revêtement testé, sans altération, présente une première fissure à environ 22 mN. Avec des valeurs plus proches de 5 mN, il est clair que les 7 années de recouvrement ont dégradé la peinture.</p><p>La compensation du profil original permet d'obtenir la profondeur corrigée pendant la rayure et de mesurer la profondeur résiduelle après la rayure. Cela permet d'obtenir des informations supplémentaires sur le comportement plastique ou élastique du revêtement sous l'effet d'une charge croissante. La fissuration et les informations sur la déformation peuvent être très utiles pour améliorer la couche dure. Les écarts types très faibles montrent également la reproductibilité de la technique de l'instrument, ce qui peut aider les fabricants à améliorer la qualité de leur couche dure/peinture et à étudier les eﬀets des intempéries.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/fr/test-nano-scratch-mar-de-la-peinture-sur-un-substrat-metallique/">Nano Scratch &#038; Mar Testing of Paint on Metal Substrate</a> appeared first on <a href="https://nanovea.com/fr">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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