{"id":116792,"date":"2022-05-24T05:20:05","date_gmt":"2022-05-24T04:20:05","guid":{"rendered":"https:\/\/material-properties.org\/quest-ce-que-le-test-dimpact-izod-definition\/"},"modified":"2022-05-25T07:25:44","modified_gmt":"2022-05-25T06:25:44","slug":"quest-ce-que-le-test-dimpact-izod-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quest-ce-que-le-test-dimpact-izod-definition\/","title":{"rendered":"Qu&rsquo;est-ce que le test d&rsquo;impact Izod &#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\">Le test de choc Izod diff\u00e8re du test de choc Charpy en ce que l&rsquo;\u00e9chantillon est maintenu dans une configuration de poutre en porte-\u00e0-faux par opposition \u00e0 une configuration de flexion en trois points.<\/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><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/izod-impact-test-schematic.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-full wp-image-27938\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/izod-impact-test-schematic.png\" alt=\"Essai de Charpy\" width=\"358\" height=\"410\" \/><\/a><span>Comme cela a \u00e9t\u00e9 \u00e9crit, la\u00a0<\/span><strong><span>t\u00e9nacit\u00e9<\/span><\/strong><span> peut \u00eatre mesur\u00e9e par le\u00a0<\/span><strong><span>test Charpy<\/span><\/strong><span>\u00a0ou le\u00a0<\/span><strong><span>test Izod<\/span><\/strong><span>.\u00a0Ces deux tests d&rsquo;impact normalis\u00e9s, le Charpy et l&rsquo;Izod, sont utilis\u00e9s pour mesurer l&rsquo;\u00a0<\/span><strong><span>\u00e9nergie d&rsquo;impact<\/span><\/strong><span>\u00a0(parfois \u00e9galement appel\u00e9e t\u00e9nacit\u00e9 \u00e0 l&rsquo;entaille).\u00a0La technique Charpy V-notch (CVN) est la plus couramment utilis\u00e9e.\u00a0Ces deux tests utilisent un \u00e9chantillon entaill\u00e9 de section d\u00e9finie.\u00a0Pour ces conditions de chargement dynamique et lorsqu&rsquo;une entaille est pr\u00e9sente, nous utilisons la\u00a0<\/span><strong><span>t\u00e9nacit\u00e9 \u00e0 l&rsquo;entaille<\/span><\/strong><span>.\u00a0L&#8217;emplacement et la forme de l&rsquo;encoche sont standards.\u00a0Les points d&rsquo;appui de l&rsquo;\u00e9chantillon, ainsi que l&rsquo;impact du marteau, doivent avoir une relation constante avec l&#8217;emplacement de l&rsquo;entaille.<\/span><\/p>\n<p><span>Les tests sont effectu\u00e9s en montant les \u00e9chantillons comme indiqu\u00e9 sur la figure et en laissant tomber un pendule d&rsquo;un poids connu d&rsquo;une hauteur d\u00e9finie.\u00a0La hauteur \u00e0 partir de laquelle le pendule est tomb\u00e9, moins la hauteur \u00e0 laquelle il s&rsquo;est \u00e9lev\u00e9 apr\u00e8s avoir d\u00e9form\u00e9 l&rsquo;\u00e9chantillon, multipli\u00e9e par le poids du pendule est une mesure de l&rsquo;\u00e9nergie absorb\u00e9e par l&rsquo;\u00e9chantillon lors de sa d\u00e9formation lors de l&rsquo;impact avec le pendule.\u00a0Plus la quantit\u00e9 d&rsquo;\u00e9nergie absorb\u00e9e par l&rsquo;\u00e9chantillon est grande, plus l&rsquo;oscillation vers le haut du pendule sera faible et plus le mat\u00e9riau sera r\u00e9sistant.\u00a0L&rsquo;indication de la t\u00e9nacit\u00e9 est relative et applicable uniquement aux cas impliquant exactement ce type d&rsquo;\u00e9chantillon et de m\u00e9thode de chargement.<\/span><\/p>\n<p><span>Un \u00e9chantillon de forme diff\u00e9rente donnera un r\u00e9sultat enti\u00e8rement diff\u00e9rent.\u00a0Les encoches confinent la d\u00e9formation \u00e0 un petit volume de m\u00e9tal qui r\u00e9duit la t\u00e9nacit\u00e9.\u00a0L&rsquo;essai de choc Izod est similaire \u00e0 l&rsquo;essai de choc Charpy mais utilise une disposition diff\u00e9rente de l&rsquo;\u00e9prouvette test\u00e9e.\u00a0L&rsquo;essai d&rsquo;impact Izod diff\u00e8re de l&rsquo;essai d&rsquo;impact Charpy en ce que l&rsquo;\u00e9chantillon est maintenu dans une configuration de poutre en porte-\u00e0-faux par opposition \u00e0 une configuration de flexion \u00e0 trois points.<\/span><\/p>\n<p><strong><span>La t\u00e9nacit\u00e9 de l&rsquo;entaille<\/span><\/strong><span>\u00a0est la mesure de l&rsquo;\u00e9nergie absorb\u00e9e (\u00e9nergie d&rsquo;impact) lors de la rupture d&rsquo;un sp\u00e9cimen (en pr\u00e9sence d&rsquo;un d\u00e9faut &#8211; g\u00e9n\u00e9ralement une entaille en V) de dimensions et de g\u00e9om\u00e9trie standard lorsqu&rsquo;il est soumis \u00e0 une charge tr\u00e8s rapide (impact).\u00a0Comme mentionn\u00e9 pr\u00e9c\u00e9demment, en pr\u00e9sence d&rsquo;un d\u00e9faut, tel qu&rsquo;une\u00a0<\/span><strong><span>entaille<\/span><\/strong><span>\u00a0ou une\u00a0<\/span><strong><span>fissure<\/span><\/strong><span>, un mat\u00e9riau pr\u00e9sentera probablement un niveau de t\u00e9nacit\u00e9 inf\u00e9rieur.\u00a0Les essais de choc Charpy et Izod permettent de mesurer ce param\u00e8tre important pour \u00e9valuer le comportement de transition ductile \u00e0 fragile d&rsquo;un mat\u00e9riau.\u00a0De m\u00eame que pour la t\u00e9nacit\u00e9 \u00e0 la traction, la t\u00e9nacit\u00e9 \u00e0 l&rsquo;entaille est mesur\u00e9e en unit\u00e9s de\u00a0<\/span><strong><span>joule par m\u00e8tre cube<\/span><\/strong><span> (J\u00b7m<\/span><sup><span>\u22123<\/span><\/sup><span>) dans le syst\u00e8me SI, mais dans ce cas, nous mesurons la surface \u00e0 la position de l&rsquo;entaille.<\/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><\/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\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>References :<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\u00a0<\/div><\/div><\/div><\/span><strong><span>Science des mat\u00e9riaux:<\/span><\/strong><\/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>Gonzalez-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<h2><span>Voir au dessus:<\/span><\/h2>\n<p><span>Robustesse<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/toughness\/\" 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>Izod Impact Test<\/span><\/strong><span>, 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,\u00a0Izod Impact Test, 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 test d&#039;impact Izod - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"L&#039;essai d&#039;impact Izod diff\u00e8re de l&#039;essai d&#039;impact Charpy en ce que l&#039;\u00e9chantillon est maintenu dans une configuration de poutre en porte-\u00e0-faux par opposition \u00e0 une configuration de flexion \u00e0 trois points.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-test-dimpact-izod-definition\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu&#039;est-ce que le test d&#039;impact Izod - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles\" \/>\n<meta property=\"og:description\" content=\"L&#039;essai d&#039;impact Izod diff\u00e8re de l&#039;essai d&#039;impact Charpy en ce que l&#039;\u00e9chantillon est maintenu dans une configuration de poutre en porte-\u00e0-faux par opposition \u00e0 une configuration de flexion \u00e0 trois points.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-test-dimpact-izod-definition\/\" \/>\n<meta property=\"og:site_name\" content=\"Material Properties\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-24T04:20:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-05-25T06:25:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/izod-impact-test-schematic.png\" \/>\n<meta name=\"author\" content=\"Nick Connor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-test-dimpact-izod-definition\/\",\"url\":\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-test-dimpact-izod-definition\/\",\"name\":\"Qu'est-ce que le test d'impact Izod - 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