{"id":115786,"date":"2022-05-01T20:51:30","date_gmt":"2022-05-01T19:51:30","guid":{"rendered":"https:\/\/material-properties.org\/quest-ce-que-le-coefficient-dusure-definition\/"},"modified":"2022-05-06T09:50:30","modified_gmt":"2022-05-06T08:50:30","slug":"quest-ce-que-le-coefficient-dusure-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quest-ce-que-le-coefficient-dusure-definition\/","title":{"rendered":"Qu&rsquo;est-ce que le coefficient d&rsquo;usure &#8211; D\u00e9finition"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">L&rsquo;usure peut \u00eatre quantifi\u00e9e (corr\u00e9l\u00e9e) au moyen du taux d&rsquo;usure, d\u00e9fini comme la masse ou le volume de mat\u00e9riau retir\u00e9 par unit\u00e9 de distance de glissement.\u00a0Il est g\u00e9n\u00e9ralement exprim\u00e9 en termes de coefficient d&rsquo;usure sans dimension (K) ou de taux d&rsquo;usure sp\u00e9cifique.<\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-30548 alignright\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/wear-types-of-wear-974x1024.png\" alt=\"porter\" width=\"557\" height=\"586\" \/><span>En g\u00e9n\u00e9ral,\u00a0<\/span><strong><span>portez <\/span><\/strong><span>est un dommage de surface induit m\u00e9caniquement qui entra\u00eene l&rsquo;\u00e9limination progressive de mati\u00e8re en raison du mouvement relatif entre cette surface et une substance ou des substances en contact.\u00a0Une substance de contact peut consister en une autre surface, un fluide, ou des particules abrasives dures contenues dans une certaine forme de fluide ou de suspension, comme un lubrifiant par exemple.\u00a0Comme pour le frottement, la pr\u00e9sence d&rsquo;usure peut \u00eatre bonne ou mauvaise.\u00a0Une usure productive et contr\u00f4l\u00e9e peut \u00eatre trouv\u00e9e dans des processus tels que l&rsquo;usinage, la coupe, le meulage et le polissage.\u00a0Cependant, dans la plupart des applications technologiques, l&rsquo;apparition d&rsquo;usure est hautement ind\u00e9sirable et c&rsquo;est un probl\u00e8me extr\u00eamement co\u00fbteux puisqu&rsquo;il conduit \u00e0 la d\u00e9t\u00e9rioration ou m\u00eame \u00e0 la d\u00e9faillance des composants.\u00a0En termes de s\u00e9curit\u00e9, ce n&rsquo;est souvent pas aussi grave (ou aussi soudain) qu&rsquo;une fracture.\u00a0C&rsquo;est parce que l&rsquo;usure est g\u00e9n\u00e9ralement anticip\u00e9e.<\/span><\/p>\n<p><span>Certaines caract\u00e9ristiques du mat\u00e9riau telles que la\u00a0<\/span><strong><span>duret\u00e9<\/span><\/strong><span>, le type de carbure et le pourcentage en volume peuvent avoir un impact d\u00e9cisif sur la r\u00e9sistance \u00e0 l&rsquo;usure d&rsquo;un mat\u00e9riau dans une application donn\u00e9e.\u00a0<\/span><strong><span>L&rsquo;usure<\/span><\/strong><span>, comme la corrosion, a plusieurs types et sous-types, est pr\u00e9visible dans une certaine mesure et est plut\u00f4t difficile \u00e0 tester et \u00e0 \u00e9valuer de mani\u00e8re fiable en laboratoire ou en service.<\/span><\/p>\n<h2><span>Coefficient d&rsquo;usure<\/span><\/h2>\n<p><span>L&rsquo;usure peut \u00eatre quantifi\u00e9e (corr\u00e9l\u00e9e) au moyen du\u00a0<\/span><strong><span>taux d&rsquo;usure<\/span><\/strong><span>, d\u00e9fini comme la masse ou le volume de mat\u00e9riau retir\u00e9 par unit\u00e9 de distance de glissement.\u00a0Il est g\u00e9n\u00e9ralement exprim\u00e9 en termes de coefficient d&rsquo;usure sans dimension\u00a0<\/span><strong><span>(K)<\/span><\/strong><span> ou de taux d&rsquo;usure sp\u00e9cifique (volume d&rsquo;usure par unit\u00e9 de charge normale appliqu\u00e9e par unit\u00e9 de distance de glissement) en (mm<\/span><sup><span>3<\/span><\/sup><span>*Nm<\/span><sup><span>-1<\/span><\/sup><span>).<\/span><\/p>\n<p><span>L&rsquo;\u00e9quation d&rsquo;usure la plus couramment utilis\u00e9e pour la condition de roulement-glissement \u00e0 sec est l&rsquo;\u00e9quation d&rsquo;usure d&rsquo;Archards.\u00a0Le volume d&rsquo;usure (V), pour une distance de glissement unitaire (S) est \u00e9gal au coefficient d&rsquo;usure adimensionnel (K) multipli\u00e9 par la charge appliqu\u00e9e (Fn) divis\u00e9 par la duret\u00e9 du mat\u00e9riau us\u00e9.<\/span><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-30546\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/wear-coefficient-formula.png\" alt=\"coefficient d'usure\" width=\"112\" height=\"64\" \/><\/p>\n<p><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span><div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>R\u00e9f\u00e9rences :<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\"><\/div><\/div><\/div><\/span><\/p>\n<p><span>La science des mat\u00e9riaux:<\/span><\/p>\n<ol>\n<li><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 et 2. Janvier 1993.<\/span><\/li>\n<li><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span><\/li>\n<li><span>William D. Callister, David G. Rethwisch.\u00a0Science et g\u00e9nie des mat\u00e9riaux : une introduction 9e \u00e9dition, Wiley ;\u00a09 \u00e9dition (4 d\u00e9cembre 2013), ISBN-13\u00a0: 978-1118324578.<\/span><\/li>\n<li><span>En ligneEberhart, Mark (2003).\u00a0Pourquoi les choses se cassent\u00a0: Comprendre le monde par la mani\u00e8re dont il se d\u00e9compose.\u00a0Harmonie.\u00a0ISBN 978-1-4000-4760-4.<\/span><\/li>\n<li><span>Gaskell, David R. (1995).\u00a0Introduction \u00e0 la thermodynamique des mat\u00e9riaux (4e \u00e9d.).\u00a0\u00c9ditions Taylor et Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><\/li>\n<li><span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Une introduction \u00e0 la science des mat\u00e9riaux.\u00a0Presse universitaire de Princeton.\u00a0ISBN 978-0-691-07097-1.<\/span><\/li>\n<li><span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Mat\u00e9riaux: ing\u00e9nierie, science, traitement et conception (1\u00e8re \u00e9d.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><\/li>\n<li><span>JR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., Prentice-Hall, 2001, ISBN : 0-201-82498-1.<\/span><\/li>\n<\/ol>\n<p><span><\/span><\/p><\/div><\/div><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div class=\"su-divider su-divider-style-default\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span>Voir ci-dessus:<\/span><br \/>\n<span>Wear<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/failure-modes-of-materials\/wear\/\" class=\"su-button su-button-style-flat\" style=\"color:#606060;background-color:#ffffff;border-color:#cccccc;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px\" target=\"_self\"><span style=\"color:#606060;padding:7px 20px;font-size:16px;line-height:24px;border-color:#ffffff;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px;text-shadow:0px 0px 0px #000000;-moz-text-shadow:0px 0px 0px #000000;-webkit-text-shadow:0px 0px 0px #000000\"><img src=\"icon : lien\" alt=\"\" style=\"width:24px;height:24px\" \/> <\/span><\/a><\/span><\/p><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span>Nous esp\u00e9rons que cet article,\u00a0<\/span><strong><span>Coefficient d&rsquo;usure<\/span><\/strong><span>\u00a0, vous aidera.\u00a0Si oui,\u00a0<\/span><strong><span>donnez-nous un like<\/span><\/strong><span>\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous esp\u00e9rons que cet article,\u00a0Coefficient d&rsquo;usure\u00a0, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que le coefficient d&#039;usure - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"L&#039;usure peut \u00eatre quantifi\u00e9e (corr\u00e9l\u00e9e) au moyen du taux d&#039;usure, d\u00e9fini comme la masse ou le volume de mat\u00e9riau retir\u00e9 par unit\u00e9 de distance de glissement. 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