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	<title>Notas de aplicação sobre tribologia em testes de arranhão - NANOVEA: perfilômetros avançados, tribômetros, nanoindentadores e testadores de arranhão para testes de materiais</title>
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	<title>Notas de aplicação sobre tribologia em testes de arranhão - NANOVEA: perfilômetros avançados, tribômetros, nanoindentadores e testadores de arranhão para testes de materiais</title>
	<link>https://nanovea.com/pt/categoria/notas-de-aplicacao/tribologia-teste/teste-de-arranhoes-tribologia/</link>
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		<title>Dureza de Arranhão a Alta Temperatura usando um Tribômetro</title>
		<link>https://nanovea.com/pt/dureza-ao-risco-a-alta-temperatura-utilizando-um-tribometro/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=high-temperature-scratch-hardness-using-a-tribometer</link>
					<comments>https://nanovea.com/pt/dureza-ao-risco-a-alta-temperatura-utilizando-um-tribometro/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Qui, 14 de julho de 2022 16:56:16 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Mechanical Testing]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Scratch Hardness]]></category>
		<category><![CDATA[Scratch Testing Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=21189</guid>

					<description><![CDATA[<p>HIGH TEMPERATURE SCRATCH HARDNESS USING A TRIBOMETER Prepared by DUANJIE, PhD INTRODUCTION Hardness measures the resistance of materials to permanent or plastic deformation. Originally developed by a German mineralogist Friedrich Mohs in 1820, scratch hardness test determines the hardness of a material to scratches and abrasion due to friction from a sharp object1. The Mohs&#8217; [&#8230;]</p>
<p>The post <a href="https://nanovea.com/pt/dureza-ao-risco-a-alta-temperatura-utilizando-um-tribometro/">High Temperature Scratch Hardness using a Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="21189" class="elementor elementor-21189" data-elementor-post-type="post">
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					<h1 class="elementor-heading-title elementor-size-default">DUREZA DE ARRANHÕES A ALTAS TEMPERATURAS</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">USANDO UM TRIBÔMETRO</h2>				</div>
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															<img fetchpriority="high" decoding="async" width="768" height="217" src="https://nanovea.com/wp-content/uploads/2022/07/High-Temperature-Tribology.jpg" class="attachment-medium_large size-medium_large wp-image-21179" alt="" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Preparado por</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">DUANJIE, PhD</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUÇÃO</h2>				</div>
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									<p>A dureza mede a resistência dos materiais à deformação permanente ou plástica. Desenvolvido originalmente por um mineralogista alemão Friedrich Mohs em 1820, o teste de dureza de arranhões determina a dureza de um material a arranhões e abrasão devido ao atrito de um objeto cortante.<sup>1</sup>. A escala de Mohs é um índice comparativo e não uma escala linear, portanto uma medição de dureza de arranhões mais precisa e qualitativa foi desenvolvida como descrito na norma ASTM G171-03.<sup>2</sup>. Ele mede a largura média do risco criado por um estilete de diamante e calcula o número de dureza do risco (HSP).</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">IMPORTÂNCIA DA MEDIÇÃO DA DUREZA DOS ARRANHÕES EM ALTAS TEMPERATURAS</h2>				</div>
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									<p>Os materiais são selecionados com base nas exigências do serviço. Para aplicações que envolvem mudanças significativas de temperatura e gradientes térmicos, é fundamental investigar as propriedades mecânicas dos materiais a altas temperaturas para estar plenamente ciente dos limites mecânicos. Os materiais, especialmente os polímeros, geralmente amolecem a altas temperaturas. Muitas falhas mecânicas são causadas pela deformação por fluência e fadiga térmica ocorrendo apenas a temperaturas elevadas. Portanto, uma técnica confiável para medir a dureza a altas temperaturas é necessária para garantir uma seleção adequada dos materiais para aplicações a altas temperaturas.</p>								</div>
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									<p style="text-align: left;">OBJETIVO DA MEDIÇÃO</p>								</div>
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									<p>Neste estudo, o Tribômetro NANOVEA T50 mede a dureza ao risco de uma amostra de Teflon em diferentes temperaturas, desde a temperatura ambiente até 300ºC. A capacidade de realizar medições de dureza a riscos em alta temperatura torna o NANOVEA <a href="https://nanovea.com/tribometers/">Tribômetro </a>um sistema versátil para avaliações tribológicas e mecânicas de materiais para aplicações em altas temperaturas.</p>								</div>
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									<p style="text-align: left;">NANOVEA</p>								</div>
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									<p style="text-align: left;">T50</p>								</div>
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									<span class="elementor-button-text">SAIBA MAIS</span>
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																<a href="https://nanovea.com/instruments/t50">
							<img decoding="async" width="705" height="695" src="https://nanovea.com/wp-content/uploads/2020/12/Robust-Tribometer-Nanovea-T50.png" class="elementor-animation-grow attachment-medium_large size-medium_large wp-image-9876" alt="" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">CONDIÇÕES DE TESTE</h2>				</div>
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									<p>O Tribômetro NANOVEA T50 Free Weight Standard foi usado para realizar os testes de dureza de arranhões em uma amostra de Teflon a temperaturas que variam da temperatura ambiente (RT) a 300°C. O teflon tem um ponto de derretimento de 326,8°C. Foi utilizada uma ponta diamantada cônica de ângulo de ápice de 120° com raio de ponta de 200 µm. A amostra de teflon foi fixada no estágio rotativo da amostra com uma distância de 10 mm até o centro do estágio. A amostra foi aquecida por um forno e testada a temperaturas de RT, 50°C, 100°C, 150°C, 200°C, 250°C e 300°C.</p>								</div>
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									<p style="text-align: center;">PARÂMETROS DE TESTE</p>								</div>
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									<p>da medição da dureza de arranhões a alta temperatura</p>								</div>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">FORÇA NORMAL</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>2 N</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">VELOCIDADE DE DESLIZAMENTO</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>1 mm/s</strong></em></td>
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<tr>
<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DISTÂNCIA DE DESLIZAMENTO</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>8mm por temperatura</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">ATMOSPHERE</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>Ar</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TEMPERATURA</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>RT, 50°C, 100°C, 150°C, 200°C, 250°C, 300°C.</strong></em></td>
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															<img decoding="async" width="758" height="514" src="https://nanovea.com/wp-content/uploads/2022/07/High-Temperature-Scratch-Hardness.jpg" class="attachment-large size-large wp-image-21178" alt="" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS &amp; DISCUSSÃO</h2>				</div>
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									<p style="text-align: left;">Os perfis de arranhões da amostra de Teflon em diferentes temperaturas são mostrados no FIGURA 1 para comparar a dureza do arranhão em diferentes temperaturas elevadas. O acúmulo de material nas bordas da trilha de arranhão se forma à medida que a ponta se desloca a uma velocidade constante viaja com uma carga constante de 2 N e arado na amostra de Teflon, empurrando e deformando o material no arranhão para o lado.</p><p>Os rastros de arranhões foram examinados sob o microscópio ótico, como mostrado na FIGURA 2. As larguras dos arranhões medidas e os números calculados de dureza de arranhão (HSP) são resumidos e comparados na FIGURA 3. A largura do arranhão medida pelo microscópio está de acordo com a medida usando o Perfilômetro  NANOVEA - a amostra de Teflon exibe uma largura de arranhão maior a temperaturas mais altas. Sua largura de arranhão aumenta de 281 para 539 µm à medida que a temperatura se eleva de RT para 300oC, resultando na diminuição do HSP de 65 para 18 MPa.</p><p>A dureza dos arranhões em temperaturas elevadas pode ser medida com alta precisão e repetibilidade usando o Tribômetro NANOVEA T50. Ele fornece uma solução alternativa a partir de outras medições de dureza e faz do NANOVEA Tribometer um sistema mais completo para avaliações tribo-mecânicas abrangentes em alta temperatura.</p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 1:</span><span class="fontstyle0" style="color: #1b96cf;"><span style="color: #000000;"><span class="fontstyle0"> </span>Perfis de arranhões após os testes de dureza de arranhão em diferentes temperaturas.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="459" height="403" src="https://nanovea.com/wp-content/uploads/2022/07/High-Temp-Scratch-Hardness-Test.jpg" class="attachment-large size-large wp-image-21187" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Arranhões sob o microscópio após as medições em diferentes temperaturas.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="1024" height="776" src="https://nanovea.com/wp-content/uploads/2022/07/Scratch-Hardness-at-High-Temperature.jpg" class="attachment-large size-large wp-image-21180" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Evolução da largura da pista de Arranhões e da dureza da Arranhão em relação à temperatura.</span></p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSÃO</h2>				</div>
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									<p>Neste estudo, mostramos como o Tribômetro NANOVEA mede a dureza dos arranhões a temperaturas elevadas em conformidade com a norma ASTM G171-03. O teste de dureza de arranhões com carga constante fornece uma solução alternativa simples para comparar a dureza dos materiais usando o tribômetro. A capacidade de realizar medições de dureza de arranhões a temperaturas elevadas faz do Tribômetro NANOVEA uma ferramenta ideal para avaliar as propriedades tribo-mecânicas de materiais a altas temperaturas.</p><p>O Tribômetro NANOVEA também oferece testes de desgaste e atrito precisos e repetíveis usando os modos rotativo e linear conforme ISO e ASTM, com módulos opcionais de desgaste a alta temperatura, lubrificação e tribo-corrosão disponíveis em um sistema pré-integrado. O Perfilômetro 3D sem contato opcional está disponível para imagens 3D de alta resolução de faixas de desgaste, além de outras medições de superfície, como rugosidade.</p>								</div>
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									<p><span class="fontstyle0">1 </span><span class="fontstyle2">Wredenberg, Fredrik; PL Larsson (2009). "Teste de arranhão de metais e polímeros: Experimentos e numéricos". Desgaste 266 (1-2): 76<br></span><span class="fontstyle0">2 </span><span class="fontstyle2">ASTM G171-03 (2009), "Standard Test Method for Scratch Hardness of Materials Using a Diamond Stylus</span> </p>								</div>
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				</div><p>The post <a href="https://nanovea.com/pt/dureza-ao-risco-a-alta-temperatura-utilizando-um-tribometro/">High Temperature Scratch Hardness using a Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Dureza de Arranhão a Alta Temperatura usando Tribômetro</title>
		<link>https://nanovea.com/pt/dureza-de-arranhao-de-alta-temperatura-usando-tribometro/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=high-temperature-scratch-hardness-using-tribometer</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Ter, 24 de novembro de 2015 15:34:17 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Mechanical Testing]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Scratch Hardness]]></category>
		<category><![CDATA[Scratch Testing Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<category><![CDATA[high temperature]]></category>
		<category><![CDATA[scratch hardness]]></category>
		<category><![CDATA[tribology]]></category>
		<category><![CDATA[tribometer]]></category>
		<guid ispermalink="false">http://nanovea.com/?p=2139</guid>

					<description><![CDATA[<p>Materials are selected based on the service requirements. For applications involving significant temperature changes and thermal gradients, it is critical to investigate the mechanical properties of materials at high temperatures to be fully aware of the mechanical limits. Materials, especially polymers, usually soften at high temperatures. A lot of mechanical failures are caused by creep deformation [&#8230;]</p>
<p>The post <a href="https://nanovea.com/pt/dureza-de-arranhao-de-alta-temperatura-usando-tribometro/">High Temperature Scratch Hardness Using Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>Os materiais são selecionados com base nas exigências do serviço. Para aplicações que envolvem mudanças significativas de temperatura e gradientes térmicos, é fundamental investigar as propriedades mecânicas dos materiais a altas temperaturas para estar plenamente ciente dos limites mecânicos. Os materiais, especialmente os polímeros, geralmente amolecem a altas temperaturas. Muitas falhas mecânicas são causadas pela deformação por fluência e fadiga térmica ocorrendo apenas a temperaturas elevadas. Portanto, uma técnica confiável para medir a dureza de arranhões a altas temperaturas é necessária para garantir uma seleção adequada dos materiais para aplicações a altas temperaturas.</p>
<p><a href="https://nanovea.com/wp-content/themes/wp-nanovea/Application%20Notes/high-temperature-tribology.pdf" target="_blank" rel="noopener noreferrer">Dureza de Arranhão a Alta Temperatura usando Tribômetro</a></p>
<p>&nbsp;</p><p>The post <a href="https://nanovea.com/pt/dureza-de-arranhao-de-alta-temperatura-usando-tribometro/">High Temperature Scratch Hardness Using Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Medição da dureza dos arranhões usando o Tribômetro</title>
		<link>https://nanovea.com/pt/medicao-de-dureza-de-arranhoes-usando-um-tribometro-2/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=scratch-hardness-measurement-using-tribometer</link>
					<comments>https://nanovea.com/pt/medicao-de-dureza-de-arranhoes-usando-um-tribometro-2/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Sábado, 08 de novembro de 2014 02:37:40 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Friction Testing | Coefficient of Friction]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Scratch Hardness]]></category>
		<category><![CDATA[Scratch Testing Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<category><![CDATA[scratch hardness]]></category>
		<guid ispermalink="false">http://nanovea.com/?p=861</guid>

					<description><![CDATA[<p>In this study, the Nanovea Tribometer is used to measure the scratch hardness of different metals. The capacity of performing scratch hardness measurement with high precision and reproducibility makes Nanovea Tribometer a more complete system for tribological and mechanical evaluations. Scratch Hardness Measurement Using Tribometer</p>
<p>The post <a href="https://nanovea.com/pt/medicao-de-dureza-de-arranhoes-usando-um-tribometro-2/">Scratch Hardness Measurement Using Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>Neste estudo, a Nanovea <a title="tribômetro" href="https://nanovea.com/tribometers" target="_blank" rel="noopener noreferrer">Tribômetro</a> é usado para medir a dureza dos arranhões de diferentes metais. O<br />
capacidade de realizar medições de dureza de arranhões com alta precisão e reprodutibilidade faz<br />
Nanovea Tribometer um sistema mais completo para avaliações tribológicas e mecânicas.</p>
<p><a title="dureza dos arranhões" href="https://nanovea.com/wp-content/themes/wp-nanovea/Application%20Notes/tribometer-scratch-hardness.pdf">Medição da dureza dos arranhões usando o Tribômetro</a></p><p>The post <a href="https://nanovea.com/pt/medicao-de-dureza-de-arranhoes-usando-um-tribometro-2/">Scratch Hardness Measurement Using Tribometer</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Teste de Desgaste de Vidro com Monitoramento de Emissões Acústicas</title>
		<link>https://nanovea.com/pt/monitoramento-de-emissoes-de-vidro-de-desgaste-e-acustico-acustico/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=wear-testing-glass-with-acoustic-emissions-monitoring</link>
					<comments>https://nanovea.com/pt/monitoramento-de-emissoes-de-vidro-de-desgaste-e-acustico-acustico/#respond</comments>
		
		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubdate>Sat, 06 Sep 2014 05:25:11 +0000</pubdate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[Block on Ring Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Linear Tribology]]></category>
		<category><![CDATA[Ring on Ring Tribology]]></category>
		<category><![CDATA[Rotational Tribology]]></category>
		<category><![CDATA[Scratch Testing Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<category><![CDATA[wear testing glass]]></category>
		<guid ispermalink="false">http://nanovea.com/?p=886</guid>

					<description><![CDATA[<p>The wear behavior of three types of glass (Regular glass, Galaxy S3 glass and Sapphire coated glass) is compared in a controlled and monitored manner using the Nanovea Tribometer equipped with an AE detector. In this study, we would like to show the application of AE detection during wear and its correlation with the evolution [&#8230;]</p>
<p>The post <a href="https://nanovea.com/pt/monitoramento-de-emissoes-de-vidro-de-desgaste-e-acustico-acustico/">Wear Testing Glass With Acoustic Emissions Monitoring</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>O comportamento de desgaste de três tipos de vidro (vidro comum, vidro Galaxy S3 e vidro Sapphire revestido) é comparado de forma controlada e monitorada usando a Nanovea <a title="tribômetro" href="https://nanovea.com/tribometers" target="_blank" rel="noopener noreferrer">Tribômetro</a> equipado com um detector de EA. Neste estudo, gostaríamos de mostrar a aplicação da detecção de EA durante o desgaste e sua correlação com a evolução do coeficiente de atrito (COF).</p>
<p><a title="vidro de teste de desgaste" href="https://nanovea.com/wp-content/themes/wp-nanovea/Application%20Notes/wear-testing-AE.pdf" target="_blank" rel="noopener noreferrer">Teste de Desgaste de Vidro com Monitoramento de Emissões Acústicas</a></p><p>The post <a href="https://nanovea.com/pt/monitoramento-de-emissoes-de-vidro-de-desgaste-e-acustico-acustico/">Wear Testing Glass With Acoustic Emissions Monitoring</a> appeared first on <a href="https://nanovea.com/pt">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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