{"id":109875,"date":"2024-04-18T17:26:50","date_gmt":"2024-04-18T15:26:50","guid":{"rendered":"https:\/\/step-lab.com\/?page_id=109875"},"modified":"2024-04-18T17:26:50","modified_gmt":"2024-04-18T15:26:50","slug":"essai-de-fracture","status":"publish","type":"page","link":"https:\/\/step-lab.com\/fr\/essai-de-fracture\/","title":{"rendered":"Essai de Fracture"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-7ly55vme-6518c3bf798ff5af51dc632731ed33d5\">\n.avia-section.av-7ly55vme-6518c3bf798ff5af51dc632731ed33d5{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/step-lab.com\/wp-content\/uploads\/2024\/04\/fracture-test.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-7ly55vme-6518c3bf798ff5af51dc632731ed33d5 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  av-mini-hide avia-bg-style-scroll container_wrap fullsize'  data-section-bg-repeat='no-repeat'><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-109875'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-7gs6rxp2-626136cd22778b3638713aabd3a40778\">\n#top .hr.hr-invisible.av-7gs6rxp2-626136cd22778b3638713aabd3a40778{\nheight:400px;\n}\n<\/style>\n<div  class='hr av-7gs6rxp2-626136cd22778b3638713aabd3a40778 hr-invisible  avia-builder-el-1  avia-builder-el-no-sibling '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id='av_section_2'  class='avia-section av-843vpj86-a7932f5f03f8d18d7a55a56825f45ac4 main_color avia-section-default avia-no-border-styling  avia-builder-el-2  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-109875'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-7zsct6dy-04ae5b56e505cb8374b2743299691880 av_one_fifth  avia-builder-el-3  el_before_av_three_fifth  avia-builder-el-first  first flex_column_div  '     ><\/div><div  class='flex_column av-7unq1wuu-292bdc584aca57fdce90f00abedb72b5 av_three_fifth  avia-builder-el-4  el_after_av_one_fifth  el_before_av_one_fifth  flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losb2b8g-03516e38992b35b7ed75af723d452447\">\n#top .av-special-heading.av-losb2b8g-03516e38992b35b7ed75af723d452447{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-losb2b8g-03516e38992b35b7ed75af723d452447 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-losb2b8g-03516e38992b35b7ed75af723d452447 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-losb2b8g-03516e38992b35b7ed75af723d452447 av-special-heading-h1  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  ><span class=\"ez-toc-section\" id=\"Quest-ce_quun_essai_de_fracture\"><\/span>Qu\u2019est-ce qu\u2019un essai de fracture ?<span class=\"ez-toc-section-end\"><\/span><\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losb26sb-c9113748a33a4509569b7c708016577c\">\n#top .av_textblock_section.av-losb26sb-c9113748a33a4509569b7c708016577c .avia_textblock{\nfont-size:18px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top .av_textblock_section.av-losb26sb-c9113748a33a4509569b7c708016577c .avia_textblock{\nfont-size:18px;\n}\n}\n<\/style>\n<section  class='av_textblock_section av-losb26sb-c9113748a33a4509569b7c708016577c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>L&rsquo;<strong>essai de fracture<\/strong> est l&rsquo;un des essais m\u00e9caniques les plus importants visant \u00e0 comprendre la capacit\u00e9 d&rsquo;un mat\u00e9riau \u00e0 r\u00e9sister \u00e0 la propagation des fissures, influen\u00e7ant ainsi sa r\u00e9sistance \u00e0 la rupture, une pierre angulaire de la caract\u00e9risation des mat\u00e9riaux.<\/p>\n<p>Ce guide complet explore en d\u00e9tail les essais de fracture, en \u00e9lucidant leur signification, les m\u00e9thodologies, les normes, les avantages et les machines d&rsquo;essai appropri\u00e9es.<\/p>\n<div id=\"malwarebytes-root\"><\/div>\n<div id=\"malwarebytes-root\"><\/div>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-luqob3a0-a861241578e273f723b130359f25bd55\">\n#top .hr.hr-invisible.av-luqob3a0-a861241578e273f723b130359f25bd55{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-luqob3a0-a861241578e273f723b130359f25bd55 hr-invisible  avia-builder-el-7  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-6yqp8ok6-13d8c1ec30b766372fae7806d2323ec1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">PAGE CONTENT<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #a81010;color:#a81010\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #a81010;color:#a81010\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/step-lab.com\/fr\/essai-de-fracture\/#Quest-ce_quun_essai_de_fracture\" >Qu\u2019est-ce qu\u2019un essai de fracture ?<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/step-lab.com\/fr\/essai-de-fracture\/#Que_mesure_un_essai_de_fracture\" >Que mesure un essai de fracture ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/step-lab.com\/fr\/essai-de-fracture\/#Quel_est_lobjectif_des_essais_de_fracture\" >Quel est l\u2019objectif des essais de fracture ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/step-lab.com\/fr\/essai-de-fracture\/#Comment_effectuer_un_essai_de_fracture\" >Comment effectuer un essai de fracture ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/step-lab.com\/fr\/essai-de-fracture\/#Normes_populaires_en_matiere_dessais_de_fracture\" >Normes populaires en mati\u00e8re d\u2019essais de fracture<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/step-lab.com\/fr\/essai-de-fracture\/#Machines_dessai_de_fracture\" >Machines d\u2019essai de fracture<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<\/div><\/section><\/p><\/div><div  class='flex_column av-rpbi5ee-3c0c1525494954076666d94b55dd5d1a av_one_fifth flex_column_div  '     ><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4yovy192-3c0c8dccff6f0f576b369ae3c7b4d1c9\">\n.avia-section.av-4yovy192-3c0c8dccff6f0f576b369ae3c7b4d1c9{\nbackground-color:#f7f7f7;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_11'  class='avia-section av-4yovy192-3c0c8dccff6f0f576b369ae3c7b4d1c9 main_color avia-section-default avia-no-border-styling avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-109875'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-4qp2ncie-8b34c96427ac052e8bfd0a0a05532f97 av_one_fifth first flex_column_div  '     ><\/div><div  class='flex_column av-gomuxcm-63c9b6137e039a64410927bb8cdd5fe1 av_three_fifth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losb7psx-0a34888ad1ad1ee0ccdb49cedbd9e32e\">\n#top .av-special-heading.av-losb7psx-0a34888ad1ad1ee0ccdb49cedbd9e32e{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-losb7psx-0a34888ad1ad1ee0ccdb49cedbd9e32e .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-losb7psx-0a34888ad1ad1ee0ccdb49cedbd9e32e .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-losb7psx-0a34888ad1ad1ee0ccdb49cedbd9e32e av-special-heading-h2'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  ><span class=\"ez-toc-section\" id=\"Que_mesure_un_essai_de_fracture\"><\/span>Que mesure un essai de fracture ?<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losf3cdw-8c73ba6ae59d27dcc5d600de8b18ad6a\">\n#top .av_textblock_section.av-losf3cdw-8c73ba6ae59d27dcc5d600de8b18ad6a .avia_textblock{\nfont-size:16px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top .av_textblock_section.av-losf3cdw-8c73ba6ae59d27dcc5d600de8b18ad6a .avia_textblock{\nfont-size:20px;\n}\n}\n<\/style>\n<section  class='av_textblock_section av-losf3cdw-8c73ba6ae59d27dcc5d600de8b18ad6a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Les essais de r\u00e9sistance \u00e0 la fracture permettent d&rsquo;\u00e9valuer la <strong>r\u00e9sistance d&rsquo;un mat\u00e9riau \u00e0 la propagation des fissures<\/strong> en le soumettant \u00e0 une charge progressivement croissante jusqu&rsquo;\u00e0 la rupture. L&rsquo;amorce d&rsquo;une rupture provient g\u00e9n\u00e9ralement de d\u00e9fauts inh\u00e9rents au mat\u00e9riau, tels que des rayures, des bosses ou des sites de corrosion, qui se propagent en fissures critiques conduisant \u00e0 une d\u00e9faillance structurelle. Ces essais, souvent men\u00e9s conjointement avec des \u00e9valuations de la corrosion, de la fatigue ou des temp\u00e9ratures \u00e9lev\u00e9es, fournissent des informations pr\u00e9cieuses sur les performances d&rsquo;un mat\u00e9riau dans diverses conditions environnementales.<\/p>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-4hojmct2-49b39de502b228bf82c2971057d9d91f av_one_fifth flex_column_div  '     ><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5lytronq-7902364c491fcff9bf3eac699b30f2ee\">\n.avia-section.av-5lytronq-7902364c491fcff9bf3eac699b30f2ee{\nbackground-color:ffffff;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_12'  class='avia-section av-5lytronq-7902364c491fcff9bf3eac699b30f2ee main_color avia-section-default avia-no-border-styling avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-109875'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-5eow8dna-afbd5047513430cadb0e8d9f4848d09c av_one_fifth first flex_column_div  '     ><\/div><div  class='flex_column av-5b14vx3q-ad71c9d52a4daf1835be4dc74abb9c77 av_three_fifth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losb7fwf-3916c03e67d71334f5219ca02b5058b4\">\n#top .av-special-heading.av-losb7fwf-3916c03e67d71334f5219ca02b5058b4{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-losb7fwf-3916c03e67d71334f5219ca02b5058b4 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-losb7fwf-3916c03e67d71334f5219ca02b5058b4 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-losb7fwf-3916c03e67d71334f5219ca02b5058b4 av-special-heading-h2'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  ><span class=\"ez-toc-section\" id=\"Quel_est_lobjectif_des_essais_de_fracture\"><\/span>Quel est l\u2019objectif des essais de fracture ?<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-56ongf6e-d9e381bb01c738bf764b7408edac29e3\">\n#top .av_textblock_section.av-56ongf6e-d9e381bb01c738bf764b7408edac29e3 .avia_textblock{\nfont-size:16px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top .av_textblock_section.av-56ongf6e-d9e381bb01c738bf764b7408edac29e3 .avia_textblock{\nfont-size:20px;\n}\n}\n<\/style>\n<section  class='av_textblock_section av-56ongf6e-d9e381bb01c738bf764b7408edac29e3 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Les essais de r\u00e9sistance \u00e0 la fracture permettent de mieux comprendre <strong>l&rsquo;int\u00e9grit\u00e9 <\/strong> structurelle et la <strong>durabilit\u00e9 <\/strong> d&rsquo;un mat\u00e9riau, ce qui est crucial dans diverses applications industrielles. Un mat\u00e9riau pr\u00e9sentant une t\u00e9nacit\u00e9 \u00e9lev\u00e9e \u00e0 la fracture signifie une r\u00e9sistance accrue \u00e0 la propagation des fissures, ce qui indique une tol\u00e9rance aux dommages et une r\u00e9sistance \u00e0 la fatigue sup\u00e9rieures. Par cons\u00e9quent, ces tests jouent un r\u00f4le crucial dans la s\u00e9lection des mat\u00e9riaux, l&rsquo;optimisation de la conception et la garantie de la s\u00e9curit\u00e9 op\u00e9rationnelle dans une multitude de disciplines d&rsquo;ing\u00e9nierie.<\/p>\n<ol>\n<li>D\u00e9terminer la <strong>s\u00e9curit\u00e9 <\/strong> du mat\u00e9riau.<\/li>\n<li>D\u00e9terminer la <strong>dur\u00e9e de vie<\/strong> d&rsquo;un mat\u00e9riau.<\/li>\n<li>R\u00e9duction des co\u00fbts gr\u00e2ce \u00e0 la diminution de la <strong>maintenance pr\u00e9matur\u00e9e<\/strong>.<\/li>\n<\/ol>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-50jgx6qe-d258a4dd1e23188209c99d2b71a1cc68 av_one_fifth flex_column_div  '     ><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-6cetajpy-12a74a66ceb915dd0e0e5a8391e6e45c\">\n.avia-section.av-6cetajpy-12a74a66ceb915dd0e0e5a8391e6e45c{\nbackground-color:#f7f7f7;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_13'  class='avia-section av-6cetajpy-12a74a66ceb915dd0e0e5a8391e6e45c main_color avia-section-default avia-no-border-styling avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-109875'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-66g3jst2-31970ed085e5bba4912d1986d1537461 av_one_fifth first flex_column_div  '     ><\/div><div  class='flex_column av-63i7dady-3ee9a68deef4bda0c7a4a60ab3236165 av_three_fifth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losb736l-b4cff07cbd1cf6377848149d7546043b\">\n#top .av-special-heading.av-losb736l-b4cff07cbd1cf6377848149d7546043b{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-losb736l-b4cff07cbd1cf6377848149d7546043b .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-losb736l-b4cff07cbd1cf6377848149d7546043b .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-losb736l-b4cff07cbd1cf6377848149d7546043b av-special-heading-h2'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  ><span class=\"ez-toc-section\" id=\"Comment_effectuer_un_essai_de_fracture\"><\/span>Comment effectuer un essai de fracture ?<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5z15m5hy-c1579405fdb35df51b50fcd3a01648bc\">\n#top .av_textblock_section.av-5z15m5hy-c1579405fdb35df51b50fcd3a01648bc .avia_textblock{\nfont-size:16px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top .av_textblock_section.av-5z15m5hy-c1579405fdb35df51b50fcd3a01648bc .avia_textblock{\nfont-size:18px;\n}\n}\n<\/style>\n<section  class='av_textblock_section av-5z15m5hy-c1579405fdb35df51b50fcd3a01648bc '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>La m\u00e9thodologie des essais de t\u00e9nacit\u00e9 \u00e0 la fracture repose sur l&rsquo;application de <strong>charges incr\u00e9mentales au mat\u00e9riau jusqu&rsquo;\u00e0 ce que la rupture se produise<\/strong>. Avant les essais, il est imp\u00e9ratif de proc\u00e9der \u00e0 une pr\u00e9paration m\u00e9ticuleuse, ce qui implique la cr\u00e9ation d&rsquo;une entaille de fatigue pour faciliter l&rsquo;amor\u00e7age des fissures, g\u00e9n\u00e9ralement obtenue par usinage par d\u00e9charge \u00e9lectrique (EDM).<\/p>\n<p>Pour r\u00e9aliser un essai de fracture, l&rsquo;\u00e9tape initiale consiste \u00e0 pr\u00e9parer un \u00e9chantillon d&rsquo;essai pr\u00e9sentant une <strong>fissure pr\u00e9existante<\/strong>. Cette fissure facilite la propagation intentionnelle de la fissure pendant l&rsquo;essai. L&rsquo;utilisation d&rsquo;une <strong>machine d&rsquo;essai universelle (UTM)<\/strong> est imp\u00e9rative pour r\u00e9aliser des essais de t\u00e9nacit\u00e9 \u00e0 la rupture, \u00e9tant donn\u00e9 sa souplesse d&rsquo;adaptation \u00e0 diverses m\u00e9thodologies d&rsquo;essai, y compris les essais de traction. En outre, le respect des normes de r\u00e9f\u00e9rence est primordial, comme le prescrivent des organisations renomm\u00e9es telles que <strong>l&rsquo;ASTM <\/strong> et <strong>l&rsquo;ISO<\/strong>. Ces normes d\u00e9finissent des exigences sp\u00e9cifiques concernant l&rsquo;\u00e9talonnage des machines et la configuration des essais, garantissant l&rsquo;uniformit\u00e9 des proc\u00e9dures dans les diff\u00e9rents sc\u00e9narios d&rsquo;essai.<\/p>\n<p>L&rsquo;une des m\u00e9thodes couramment utilis\u00e9es dans les essais de fracture est l&rsquo;<strong>essai de d\u00e9placement de l&rsquo;ouverture de la pointe de la fissure (CTOD). <\/strong> Cette m\u00e9thode consiste \u00e0 soumettre un \u00e9chantillon de mat\u00e9riau pr\u00e9-fissur\u00e9 \u00e0 un essai de flexion \u00e0 3 points. Les \u00e9tapes de la proc\u00e9dure pour effectuer un test CTOD sont les suivantes :<\/p>\n<ul>\n<li><strong>Pr\u00e9paration de l&rsquo;\u00e9chantillon<\/strong> : Usinage d&rsquo;une entaille au milieu de l&rsquo;\u00e9chantillon de mat\u00e9riau, suivi de l&rsquo;induction d&rsquo;une fissure de fatigue au niveau de l&rsquo;entaille usin\u00e9e.<\/li>\n<li><strong>Proc\u00e9dure de chargement<\/strong> : Placement de l&rsquo;\u00e9chantillon dans une machine de flexion \u00e0 3 points pour appliquer la charge requise.<\/li>\n<li><strong>Mesure de la d\u00e9formation<\/strong> : Fixation de jauges de contrainte de part et d&rsquo;autre de la fissure pour mesurer m\u00e9ticuleusement les variations de contrainte tout au long du processus d&rsquo;essai.<\/li>\n<li><strong>Analyse des d\u00e9faillances<\/strong> : Application d&rsquo;une charge progressive jusqu&rsquo;\u00e0 ce que la d\u00e9faillance se produise, en documentant m\u00e9ticuleusement les r\u00e9sultats qui en d\u00e9coulent pour une analyse et une \u00e9valuation compl\u00e8tes.<\/li>\n<\/ul>\n<div id=\"malwarebytes-root\"><\/div>\n<div id=\"malwarebytes-root\"><\/div>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-5uhwod5i-d0c46ce4fb8e0ba755702382656619c4-wrap avia-button-left '><a href='https:\/\/step-lab.com\/fr\/systemes-dessais-dynamiques-et-de-fatigue\/'  class='avia-button av-5uhwod5i-d0c46ce4fb8e0ba755702382656619c4 av-link-btn avia-icon_select-no avia-size-small avia-position-left avia-color-theme-color'   aria-label=\"Cliquez ici pour voir nos machines d\u2019essai de fracture\"><span class='avia_iconbox_title' >Cliquez ici pour voir nos machines d\u2019essai de fracture<\/span><\/a><\/div><\/p><\/div><div  class='flex_column av-5qaavqom-c874de0f72858556cc9ad58aeebce1ee av_one_fifth flex_column_div  '     ><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-42f6hbyu-4531c8188a4af429fc0710169ef595fd\">\n.avia-section.av-42f6hbyu-4531c8188a4af429fc0710169ef595fd{\nbackground-color:#ffffff;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_14'  class='avia-section av-42f6hbyu-4531c8188a4af429fc0710169ef595fd main_color avia-section-default avia-no-border-styling avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-109875'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-3wv9ljh2-e485f5cd4f7e4a5a6885df1fdf18f67d av_one_fifth first flex_column_div  '     ><\/div><div  class='flex_column av-3qnpbvx2-f94ef4dfa8ea2d65c8f11ee4a90770fe av_three_fifth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losb89ot-98bc00f3bc0c362b8ee166cdad2a6865\">\n#top .av-special-heading.av-losb89ot-98bc00f3bc0c362b8ee166cdad2a6865{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-losb89ot-98bc00f3bc0c362b8ee166cdad2a6865 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-losb89ot-98bc00f3bc0c362b8ee166cdad2a6865 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-losb89ot-98bc00f3bc0c362b8ee166cdad2a6865 av-special-heading-h2'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  ><span class=\"ez-toc-section\" id=\"Normes_populaires_en_matiere_dessais_de_fracture\"><\/span>Normes populaires en mati\u00e8re d\u2019essais de fracture<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3lqfiil2-802d25ad89ab2a961ec77dbb2bed47cc\">\n#top .av_textblock_section.av-3lqfiil2-802d25ad89ab2a961ec77dbb2bed47cc .avia_textblock{\nfont-size:16px;\n}\n<\/style>\n<section  class='av_textblock_section av-3lqfiil2-802d25ad89ab2a961ec77dbb2bed47cc '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><ul>\n<li>ASTM D5528 : pour la t\u00e9nacit\u00e9 interlaminaire des composites polym\u00e8res unidirectionnels.<\/li>\n<li>ASTM D6671 : M\u00e9thode d&rsquo;essai standard pour la t\u00e9nacit\u00e9 \u00e0 la rupture interlaminaire mixte Mode I-Mode II des composites unidirectionnels \u00e0 matrice polym\u00e8re renforc\u00e9e par des fibres.<\/li>\n<li>ASTM E208 : M\u00e9thode d&rsquo;essai standard pour la r\u00e9alisation d&rsquo;un essai de chute de poids afin de d\u00e9terminer la temp\u00e9rature de transition de non ductilit\u00e9 des aciers ferritiques.<\/li>\n<li><a href=\"https:\/\/step-lab.com\/astm\/astm-e399\/\">ASTM E399 : M\u00e9thode d&rsquo;essai standard pour la t\u00e9nacit\u00e9 \u00e0 la rupture lin\u00e9aire-\u00e9lastique en d\u00e9formation plane des mat\u00e9riaux m\u00e9talliques.<\/a><\/li>\n<li>ASTM E561 : M\u00e9thode d&rsquo;essai standard pour la d\u00e9termination de la courbe KR.<\/li>\n<li>ASTM E604 : M\u00e9thode d&rsquo;essai standard pour le test de d\u00e9chirure dynamique des mat\u00e9riaux m\u00e9talliques.<\/li>\n<li>ASTM E740 : Standard Practice for Fracture Testing with Surface-Crack Tension Specimens (Pratique standard pour les essais de rupture avec des \u00e9chantillons de tension de fissure superficielle).<\/li>\n<li>ASTM E1304 : M\u00e9thode d&rsquo;essai standard pour la r\u00e9sistance \u00e0 la rupture en plan (Chevron-Notch) des mat\u00e9riaux m\u00e9talliques.<\/li>\n<li>ASTM E1681 : M\u00e9thode d&rsquo;essai standard pour la d\u00e9termination du facteur d&rsquo;intensit\u00e9 de contrainte seuil pour la fissuration assist\u00e9e par l&rsquo;environnement des mat\u00e9riaux m\u00e9talliques.<\/li>\n<li>ASTM E1820 : M\u00e9thode d&rsquo;essai standard pour la mesure de la r\u00e9sistance \u00e0 la rupture.<\/li>\n<li>ASTM E1921-22a : M\u00e9thode de test standard pour la d\u00e9termination de la temp\u00e9rature de r\u00e9f\u00e9rence, T0, pour les aciers ferritiques dans la gamme de transition.<\/li>\n<li>ISO 12135 : Mat\u00e9riaux m\u00e9talliques-M\u00e9thode d&rsquo;essai unifi\u00e9e pour la d\u00e9termination de la r\u00e9sistance \u00e0 la rupture quasi-statique.<\/li>\n<li>ISO 17281 : Plastiques &#8211; D\u00e9termination de la t\u00e9nacit\u00e9 \u00e0 la rupture (GIC et KIC) \u00e0 des vitesses de chargement mod\u00e9r\u00e9ment \u00e9lev\u00e9es (1 m\/s).<\/li>\n<\/ul>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-3i1tsy6u-93f93212c8a6e74ece4eb5d8fbe331e2 av_one_fifth flex_column_div  '     ><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3djf89p2-42df109071b5374a2141924ae885fd0f\">\n.avia-section.av-3djf89p2-42df109071b5374a2141924ae885fd0f{\nbackground-color:#f7f7f7;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_15'  class='avia-section av-3djf89p2-42df109071b5374a2141924ae885fd0f main_color avia-section-default avia-no-border-styling avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-109875'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-3b5tkmja-464cbdd51e61916ef21bfbfd33659b5b av_one_fifth first flex_column_div  '     ><\/div><div  class='flex_column av-36dceymu-4c9c85644851d938641ad4fa7e909a02 av_three_fifth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-losb8etb-f9d52162304d69db360a327360dadb6c\">\n#top .av-special-heading.av-losb8etb-f9d52162304d69db360a327360dadb6c{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-losb8etb-f9d52162304d69db360a327360dadb6c .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-losb8etb-f9d52162304d69db360a327360dadb6c .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-losb8etb-f9d52162304d69db360a327360dadb6c av-special-heading-h2'><h2 class='av-special-heading-tag '  itemprop=\"headline\"  ><span class=\"ez-toc-section\" id=\"Machines_dessai_de_fracture\"><\/span>Machines d\u2019essai de fracture<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lv53zhbm-9ac14b42fb96e663c976696b80cac730\">\n#top .av_textblock_section.av-lv53zhbm-9ac14b42fb96e663c976696b80cac730 .avia_textblock{\nfont-size:16px;\n}\n<\/style>\n<section  class='av_textblock_section av-lv53zhbm-9ac14b42fb96e663c976696b80cac730 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>STEP Lab est synonyme d&rsquo;excellence en mati\u00e8re d&rsquo;<strong>essais de mat\u00e9riaux<\/strong>, avec une comp\u00e9tence in\u00e9gal\u00e9e dans ce domaine. Gr\u00e2ce \u00e0 nos <strong>machines d&rsquo;essai \u00e9lectriques de pointe<\/strong>, nous excellons dans la r\u00e9alisation d&rsquo;\u00e9valuations pr\u00e9cises de la r\u00e9sistance \u00e0 la rupture. Qu&rsquo;il s&rsquo;agisse de <strong>capacit\u00e9s de charge \u00e9lev\u00e9es<\/strong> ou de <strong>temp\u00e9ratures extr\u00eames<\/strong>, nos installations sont \u00e9quip\u00e9es pour g\u00e9rer diverses conditions d&rsquo;essai, garantissant des \u00e9valuations approfondies et des r\u00e9sultats fiables pour tous nos clients.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-aviy4ie-8b9d6daab54ec12a52c67e03c2ebdf8d\">\n#top .hr.hr-invisible.av-aviy4ie-8b9d6daab54ec12a52c67e03c2ebdf8d{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-aviy4ie-8b9d6daab54ec12a52c67e03c2ebdf8d hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p><\/div><div  class='flex_column av-2xdg0fx2-12f27d569e145ddd4d1e0f37e0b3758c av_one_fifth flex_column_div  '     ><\/div><div  class='flex_column av-2peb4iza-850afa2a0ccd534fbded3bc3a3227941 av_one_fourth first flex_column_div  '     ><\/div><div  class='flex_column av-2oaqe8d2-d9abeac5bbbf2392b56371d5406e9a89 av_one_fourth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2hz4ut7a-7b06aec2178ec38b701158e5f502b6e9\">\n.avia-image-container.av-2hz4ut7a-7b06aec2178ec38b701158e5f502b6e9 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-2hz4ut7a-7b06aec2178ec38b701158e5f502b6e9 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-2hz4ut7a-7b06aec2178ec38b701158e5f502b6e9 av-styling- avia-align-center'   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-76139 avia-img-lazy-loading-not-76139 avia_image ' src=\"https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-239x300.png\" alt='' title='EA050 Statico lato.3661'  height=\"300\" width=\"239\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-239x300.png 239w, https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-822x1030.png 822w, https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-768x962.png 768w, https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-1226x1536.png 1226w, https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-1634x2048.png 1634w, https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-1197x1500.png 1197w, https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661-563x705.png 563w, https:\/\/step-lab.com\/wp-content\/uploads\/EA050-Statico-lato.3661.png 1722w\" sizes=\"(max-width: 239px) 100vw, 239px\" \/><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8jwqhxy-1899419816d21158ccc54ba61e45507f\">\n#top .av_textblock_section.av-8jwqhxy-1899419816d21158ccc54ba61e45507f .avia_textblock{\nfont-size:16px;\n}\n<\/style>\n<section  class='av_textblock_section av-8jwqhxy-1899419816d21158ccc54ba61e45507f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong>S\u00c9RIE EA<\/strong><\/p>\n<p style=\"text-align: center;\">Actionneurs \u00e9lectrom\u00e9caniques<\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-27lsa7py-70f02bdb5771b83fd14561069f73ee6b-wrap avia-button-center '><a href='https:\/\/step-lab.com\/fr\/systemes-actionneurs-electromecaniques\/'  class='avia-button av-27lsa7py-70f02bdb5771b83fd14561069f73ee6b av-link-btn avia-icon_select-no avia-size-small avia-position-center avia-color-theme-color'   aria-label=\"En savoir plus\"><span class='avia_iconbox_title' >En savoir plus<\/span><\/a><\/div><\/p><\/div><div  class='flex_column 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