{"id":116501,"date":"2025-04-14T17:21:04","date_gmt":"2025-04-14T15:21:04","guid":{"rendered":"https:\/\/step-lab.com\/?page_id=116501"},"modified":"2025-04-14T17:21:04","modified_gmt":"2025-04-14T15:21:04","slug":"iso-3385","status":"publish","type":"page","link":"https:\/\/step-lab.com\/fr\/normes-iso\/iso-3385\/","title":{"rendered":"ISO 3385"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-12hunhy-5a34906e2774806c11080b9455f694ee\">\n.avia-section.av-12hunhy-5a34906e2774806c11080b9455f694ee{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/step-lab.com\/wp-content\/uploads\/2023\/11\/background-for-standards.jpg);\nbackground-position:0% 0%;\nbackground-attachment:scroll;\n}\n.avia-section.av-12hunhy-5a34906e2774806c11080b9455f694ee .av-section-color-overlay{\nopacity:0.4;\nbackground-color:#0a0a0a;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-12hunhy-5a34906e2774806c11080b9455f694ee main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_one_fifth  avia-builder-el-first  avia-full-stretch avia-bg-style-scroll av-section-color-overlay-active av-minimum-height av-minimum-height-custom av-height-custom  container_wrap fullsize'  data-section-bg-repeat='stretch' data-av_minimum_height_px='400'><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><div class='container av-section-cont-open' style='height:400px'><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-116501'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lp13jptg-63eddbf62092de98163adfceeefc58b4\">\n#top .av_textblock_section.av-lp13jptg-63eddbf62092de98163adfceeefc58b4 .avia_textblock{\ncolor:#ffffff;\n}\n<\/style>\n<section  class='av_textblock_section av-lp13jptg-63eddbf62092de98163adfceeefc58b4 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><h1 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"ISO_3385\"><\/span>ISO 3385<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-s1zpau-de7e9c4e65155d0786b727bb6c986f5f\">\n#top .hr.hr-invisible.av-s1zpau-de7e9c4e65155d0786b727bb6c986f5f{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-s1zpau-de7e9c4e65155d0786b727bb6c986f5f hr-invisible  avia-builder-el-2  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lp13jyh5-4a9392d1352b953e455a9920b048676c\">\n#top .av_textblock_section.av-lp13jyh5-4a9392d1352b953e455a9920b048676c .avia_textblock{\ncolor:#ffffff;\n}\n<\/style>\n<section  class='av_textblock_section av-lp13jyh5-4a9392d1352b953e455a9920b048676c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><h2 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Determination_de_la_fatigue_par_pilonnage_a_charge_constante\"><\/span>D\u00e9termination de la fatigue par pilonnage \u00e0 charge constante<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div><\/section>\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><\/div><div id='after_section_1'  class='main_color av_default_container_wrap 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-116501'><div class='entry-content-wrapper clearfix'><div  class='flex_column av-a2t75hy-8867e5f8db00a9f77dcd9d04a327d3c0 av_one_fifth  avia-builder-el-4  el_after_av_section  el_before_av_three_fifth  avia-builder-el-first  first flex_column_div  '     ><\/div><\/p>\n<div  class='flex_column av-9h8y6za-389868629b92df4682dd5622a3abb370 av_three_fifth  avia-builder-el-5  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-lnimbzcf-6b2a84a0193d0ca2da52322a6c981693\">\n#top .av_textblock_section.av-lnimbzcf-6b2a84a0193d0ca2da52322a6c981693 .avia_textblock{\nfont-size:18px;\n}\n<\/style>\n<section  class='av_textblock_section av-lnimbzcf-6b2a84a0193d0ca2da52322a6c981693 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Il est essentiel de tester les mat\u00e9riaux dans des conditions r\u00e9alistes pour garantir leur durabilit\u00e9, leur s\u00e9curit\u00e9 et leurs performances. Les <strong> normes ISO<\/strong> fournissent des m\u00e9thodes internationalement reconnues pour \u00e9valuer les mat\u00e9riaux de mani\u00e8re coh\u00e9rente et pr\u00e9cise.<\/p>\n<p>Pour les mousses souples utilis\u00e9es dans les si\u00e8ges et les tissus d&rsquo;ameublement, l&rsquo;une des normes les plus pertinentes est la norme <strong>ISO 3385<\/strong>, qui d\u00e9finit une m\u00e9thode d&rsquo;essai de fatigue par mart\u00e8lement \u00e0 charge constante.<\/p>\n<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\/normes-iso\/iso-3385\/#ISO_3385\" >ISO 3385<\/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\/normes-iso\/iso-3385\/#Determination_de_la_fatigue_par_pilonnage_a_charge_constante\" >D\u00e9termination de la fatigue par pilonnage \u00e0 charge constante<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/step-lab.com\/fr\/normes-iso\/iso-3385\/#QUEST-CE_QUE_LISO_3385\" >QU&rsquo;EST-CE QUE L&rsquo;ISO 3385 ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/step-lab.com\/fr\/normes-iso\/iso-3385\/#ISO_3385_%E2%80%93_PORTEE_DE_LESSAI\" >ISO 3385 &#8211; PORT\u00c9E DE L&rsquo;ESSAI<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/step-lab.com\/fr\/normes-iso\/iso-3385\/#ISO_3385_%E2%80%93_SPECIFICATIONS_DES_ECHANTILLONS\" >ISO 3385 &#8211; SP\u00c9CIFICATIONS DES \u00c9CHANTILLONS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/step-lab.com\/fr\/normes-iso\/iso-3385\/#ISO_3385_%E2%80%93_TROIS_PHASES_DESSAI\" >ISO 3385 &#8211; TROIS PHASES D&rsquo;ESSAI<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/step-lab.com\/fr\/normes-iso\/iso-3385\/#MACHINE_DESSAI_POUR_ISO_3385\" >MACHINE D&rsquo;ESSAI POUR ISO 3385<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lnip5g4k-6698dba274103a68d30e9d05a1c5838f\">\n#top .hr.hr-invisible.av-lnip5g4k-6698dba274103a68d30e9d05a1c5838f{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-lnip5g4k-6698dba274103a68d30e9d05a1c5838f hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m9gx9n09-87f9c251747714af7345907eed6111a6\">\n#top .av_textblock_section.av-m9gx9n09-87f9c251747714af7345907eed6111a6 .avia_textblock{\nfont-size:18px;\n}\n<\/style>\n<section  class='av_textblock_section av-m9gx9n09-87f9c251747714af7345907eed6111a6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><span class=\"ez-toc-section\" id=\"QUEST-CE_QUE_LISO_3385\"><\/span>QU&rsquo;EST-CE QUE L&rsquo;ISO 3385 ?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La norme <strong> ISO 3385<\/strong> d\u00e9finit une m\u00e9thode normalis\u00e9e pour \u00e9valuer la perte d&rsquo;<strong data-start=\"311\" data-end=\"324\">\u00e9paisseur <\/strong> et de <strong>duret\u00e9 <\/strong> des mat\u00e9riaux cellulaires souples et flexibles, tels que ceux utilis\u00e9s dans les tissus d&rsquo;ameublement et les si\u00e8ges de v\u00e9hicules, apr\u00e8s une contrainte m\u00e9canique r\u00e9p\u00e9t\u00e9e. Cette m\u00e9thode est particuli\u00e8rement pertinente pour les mat\u00e9riaux \u00e0 base de <strong>latex de caoutchouc<\/strong> ou de <strong>polyur\u00e9thane<\/strong>, garantissant une qualit\u00e9 constante et des performances \u00e0 long terme dans les applications de support de charge.<\/p>\n<p>Si la norme ISO 3385 permet de simuler l&rsquo;usure que ces mat\u00e9riaux pourraient subir pendant leur utilisation, les r\u00e9sultats ne refl\u00e8tent pas directement la dur\u00e9e de vie exacte, mais sont plut\u00f4t utilis\u00e9s pour <strong>comparer les mat\u00e9riaux<\/strong> dans des conditions identiques.<\/p>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-8n6uv06-b477c06b8f06684125d57542ba7e65dc av_one_fifth flex_column_div  '     ><\/div><\/p>\n<div  class='flex_column av-u8iztw9-71d877ebe422acde80cc2067fe931c2d av_one_third first flex_column_div  '     ><\/div>\n<div  class='flex_column av-oe12m8p-580a666f3ffe5332ae38d3735935caf3 av_one_third flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lnipgqfx-321b43b6eb97838a6272f60cdce2e09c\">\n#top .hr.hr-invisible.av-lnipgqfx-321b43b6eb97838a6272f60cdce2e09c{\nheight:20px;\n}\n<\/style>\n<div  class='hr av-lnipgqfx-321b43b6eb97838a6272f60cdce2e09c hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m9h3lfwh-8b1d0c4bd116d59013f511fc3a1567d3\">\n.avia-image-container.av-m9h3lfwh-8b1d0c4bd116d59013f511fc3a1567d3 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-m9h3lfwh-8b1d0c4bd116d59013f511fc3a1567d3 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-m9h3lfwh-8b1d0c4bd116d59013f511fc3a1567d3 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-116480 avia-img-lazy-loading-not-116480 avia_image ' src=\"https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195-300x225.jpg\" alt='' title='DSC_1195'  height=\"225\" width=\"300\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195-300x225.jpg 300w, https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195-1030x773.jpg 1030w, https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195-768x576.jpg 768w, https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195-1536x1152.jpg 1536w, https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195-1500x1125.jpg 1500w, https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195-705x529.jpg 705w, https:\/\/step-lab.com\/wp-content\/uploads\/2025\/04\/DSC_1195.jpg 1624w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div><\/div><\/div><\/p><\/div><div  class='flex_column av-jzod4yh-d83d80bea3b06cf3b872947a6e36a71d av_one_third flex_column_div  '     ><\/div><\/p>\n<div  class='flex_column av-8474nw6-1a8c78c3b031abb0343757646d18d239 av_one_fifth first flex_column_div  '     ><\/div>\n<div  class='flex_column av-1l821jt-97bb99d354b66ef31ea2fe879d601a6b av_three_fifth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-cq25buf-f854f66ccc936dcb27c44d8064c226ca\">\n#top .hr.hr-invisible.av-cq25buf-f854f66ccc936dcb27c44d8064c226ca{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-cq25buf-f854f66ccc936dcb27c44d8064c226ca hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lnip74zk-bff03b588620857d9910efff1c84be90\">\n#top .av_textblock_section.av-lnip74zk-bff03b588620857d9910efff1c84be90 .avia_textblock{\nfont-size:18px;\n}\n<\/style>\n<section  class='av_textblock_section av-lnip74zk-bff03b588620857d9910efff1c84be90 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><span class=\"ez-toc-section\" id=\"ISO_3385_%E2%80%93_PORTEE_DE_LESSAI\"><\/span>ISO 3385 &#8211; PORT\u00c9E DE L&rsquo;ESSAI<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La norme s&rsquo;applique \u00e0 la fois aux <strong>\u00e9chantillons de taille standard<\/strong> d\u00e9coup\u00e9s dans des blocs de mousse (slabstock) et aux <strong>composants moul\u00e9s<\/strong>. Le test se concentre sur l&rsquo;\u00e9valuation de la d\u00e9gradation caus\u00e9e par des <strong>chocs m\u00e9caniques r\u00e9p\u00e9t\u00e9s<\/strong>, simulant l&rsquo;utilisation r\u00e9elle au fil du temps.<\/p>\n<p>Note : La norme ISO 3385 ne sp\u00e9cifie pas les exigences techniques d\u00e9taill\u00e9es pour l&rsquo;appareil d&rsquo;essai de fatigue.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m9gxclyo-524f68da7e6859831e3c22b30e3afecc\">\n#top .hr.hr-invisible.av-m9gxclyo-524f68da7e6859831e3c22b30e3afecc{\nheight:25px;\n}\n<\/style>\n<div  class='hr av-m9gxclyo-524f68da7e6859831e3c22b30e3afecc hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m9gxesyg-e072bb0eee2ceb58015848d44e3c12f9\">\n#top .av_textblock_section.av-m9gxesyg-e072bb0eee2ceb58015848d44e3c12f9 .avia_textblock{\nfont-size:18px;\n}\n<\/style>\n<section  class='av_textblock_section av-m9gxesyg-e072bb0eee2ceb58015848d44e3c12f9 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><span class=\"ez-toc-section\" id=\"ISO_3385_%E2%80%93_SPECIFICATIONS_DES_ECHANTILLONS\"><\/span>ISO 3385 &#8211; SP\u00c9CIFICATIONS DES \u00c9CHANTILLONS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Selon la norme ISO 3385, l&rsquo;\u00e9chantillon d&rsquo;essai doit \u00eatre un <strong>parall\u00e9l\u00e9pip\u00e8de droit<\/strong> dont les dimensions sont les suivantes<\/p>\n<ul>\n<li>380 mm x 380 mm<\/li>\n<li>\u00c9paisseur : 50 mm \u00b1 2 mm<\/li>\n<\/ul>\n<p>En vertu d&rsquo;un accord, le test peut <strong>\u00e9galement <\/strong> \u00eatre effectu\u00e9 sur des <strong>pi\u00e8ces moul\u00e9es <\/strong> de dimensions diff\u00e9rentes. Avant d&rsquo;\u00eatre test\u00e9, le mat\u00e9riau doit \u00eatre :<\/p>\n<ul>\n<li>Vieillissement de 72 heures apr\u00e8s la fabrication<\/li>\n<li>Conditionn\u00e9 pendant au moins 16 heures \u00e0\n<ul>\n<li>23 \u00b0C \/ 50 % d&rsquo;humidit\u00e9 relative ou<\/li>\n<li>27 \u00b0C \/ 65% d&rsquo;humidit\u00e9 relative<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8npojqv-af39b3dd78925d27d98128e3b52e9f4c\">\n#top .hr.hr-invisible.av-8npojqv-af39b3dd78925d27d98128e3b52e9f4c{\nheight:25px;\n}\n<\/style>\n<div  class='hr av-8npojqv-af39b3dd78925d27d98128e3b52e9f4c hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m9gxiz8a-97e3d5d818666669988919ffbe3808c9\">\n#top .av_textblock_section.av-m9gxiz8a-97e3d5d818666669988919ffbe3808c9 .avia_textblock{\nfont-size:18px;\n}\n<\/style>\n<section  class='av_textblock_section av-m9gxiz8a-97e3d5d818666669988919ffbe3808c9 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><span class=\"ez-toc-section\" id=\"ISO_3385_%E2%80%93_TROIS_PHASES_DESSAI\"><\/span>ISO 3385 &#8211; TROIS PHASES D&rsquo;ESSAI<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>1. Mesure initiale : \u00c9paisseur et duret\u00e9<\/strong><\/p>\n<p>Le test commence par une \u00e9valuation initiale de l&rsquo;\u00e9chantillon :<\/p>\n<ul>\n<li>L&rsquo;\u00e9paisseur est mesur\u00e9e sous une pr\u00e9charge de 5 N<\/li>\n<li>L&rsquo;indice de duret\u00e9 par indentation est mesur\u00e9 \u00e0 une indentation de 40 % avec un temps de maintien de 30 secondes, conform\u00e9ment \u00e0 la m\u00e9thode A de la norme ISO 2439.<\/li>\n<\/ul>\n<p><strong>2. Essai de fatigue : Martelage \u00e0 charge constante<\/strong><\/p>\n<p>Le c\u0153ur de la norme ISO 3385 implique 80 000 cycles de mart\u00e8lement \u00e0 charge constante :<\/p>\n<ul>\n<li>Le p\u00e9n\u00e9trateur fonctionne \u00e0 une fr\u00e9quence de 70 \u00b1 5 chocs\/min.<\/li>\n<li>L&rsquo;\u00e9chantillon doit \u00eatre plus grand que le p\u00e9n\u00e9trateur et plus petit que la plaque de support.<\/li>\n<li>Une force maximale de 770 N ne doit pas \u00eatre d\u00e9pass\u00e9e pendant les essais.<\/li>\n<li>Le test peut \u00eatre effectu\u00e9 dans des conditions climatiques standard ou contr\u00f4l\u00e9es.<\/li>\n<\/ul>\n<p><strong>3. Mesure finale : \u00c9paisseur et duret\u00e9<\/strong><\/p>\n<p>Apr\u00e8s l&rsquo;essai de fatigue :<\/p>\n<ul>\n<li>Une p\u00e9riode d&rsquo;attente de 10 \u00b1 5 minutes est observ\u00e9e<\/li>\n<li>L&rsquo;\u00e9paisseur et la duret\u00e9 par indentation sont remesur\u00e9es selon la m\u00e9thode A de l&rsquo;ISO 2439.<\/li>\n<li>Les r\u00e9sultats sont exprim\u00e9s en pourcentage de perte de duret\u00e9 et d&rsquo;\u00e9paisseur.<\/li>\n<\/ul>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-ap6brh5-72c75958f725328cbea6f2d91d1239a9 av_one_fifth flex_column_div  '     ><\/div><\/p>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m6p5ovli-7a894d96fbb3f4cdebd645425ef2a0a3\">\n#top .hr.hr-invisible.av-m6p5ovli-7a894d96fbb3f4cdebd645425ef2a0a3{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-m6p5ovli-7a894d96fbb3f4cdebd645425ef2a0a3 hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<div  class='flex_column av-5e7jh95-14f9566be7b71254bae1d63679b9c0ae av_one_fifth first flex_column_div  '     ><\/div>\n<div  class='flex_column av-7sr0eye-27b833491d7ea8dcbe1a532c30d618f4 av_one_fourth flex_column_div  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5a23xnv-233c42ac5775a5f3ae525a6a67eb0879\">\n.avia-image-container.av-5a23xnv-233c42ac5775a5f3ae525a6a67eb0879 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-5a23xnv-233c42ac5775a5f3ae525a6a67eb0879 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-5a23xnv-233c42ac5775a5f3ae525a6a67eb0879 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-95140 avia-img-lazy-loading-not-95140 avia_image ' src=\"https:\/\/step-lab.com\/wp-content\/uploads\/2023\/07\/foam_testing_machine-200x300.jpg\" alt='' title='foam_testing_machine'  height=\"300\" width=\"200\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/step-lab.com\/wp-content\/uploads\/2023\/07\/foam_testing_machine-200x300.jpg 200w, https:\/\/step-lab.com\/wp-content\/uploads\/2023\/07\/foam_testing_machine-687x1030.jpg 687w, https:\/\/step-lab.com\/wp-content\/uploads\/2023\/07\/foam_testing_machine-768x1152.jpg 768w, https:\/\/step-lab.com\/wp-content\/uploads\/2023\/07\/foam_testing_machine-470x705.jpg 470w, https:\/\/step-lab.com\/wp-content\/uploads\/2023\/07\/foam_testing_machine.jpg 997w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/div><\/div><\/div><\/div><div  class='flex_column av-6uufno6-ea50bcc3bd8e698d8c441ed06aeb9fa4 av_two_fifth flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m9h3t164-619acdecc770de9edf9680350b55eb63\">\n#top .hr.hr-invisible.av-m9h3t164-619acdecc770de9edf9680350b55eb63{\nheight:10px;\n}\n<\/style>\n<div  class='hr av-m9h3t164-619acdecc770de9edf9680350b55eb63 hr-invisible'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lpl48nw8-c74d84ee2063717f66c6450f13df416a\">\n#top .av_textblock_section.av-lpl48nw8-c74d84ee2063717f66c6450f13df416a .avia_textblock{\nfont-size:16px;\n}\n<\/style>\n<section  class='av_textblock_section av-lpl48nw8-c74d84ee2063717f66c6450f13df416a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><span class=\"ez-toc-section\" id=\"MACHINE_DESSAI_POUR_ISO_3385\"><\/span>MACHINE D&rsquo;ESSAI POUR ISO 3385<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>STEP Lab propose la s\u00e9rie EA, des machines d&rsquo;essai \u00e9lectrom\u00e9caniques id\u00e9ales pour les essais de fatigue ISO 3385 et con\u00e7ues pour des taux de charge \u00e9lev\u00e9s.<\/p>\n<p>Un large choix de p\u00e9n\u00e9trateurs et de plaques de support garantit la conformit\u00e9 \u00e0 la norme ISO 3385. Qu&rsquo;il s&rsquo;agisse de tester des \u00e9chantillons standard ou des pi\u00e8ces moul\u00e9es, STEP Lab fournit les outils n\u00e9cessaires pour obtenir des r\u00e9sultats fiables et reproductibles.<\/p>\n<p><strong>Pour conna\u00eetre tous les d\u00e9tails de la s\u00e9rie EA, cliquez sur le bouton ci-dessous.<\/strong><\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-lnx2w71h-d2e20262a7b17cefc2a18c5b1fc2a1a2-wrap avia-button-left '><a href='https:\/\/step-lab.com\/fr\/systemes-actionneurs-electromecaniques\/'  class='avia-button av-lnx2w71h-d2e20262a7b17cefc2a18c5b1fc2a1a2 av-link-btn avia-icon_select-no avia-size-small avia-position-left avia-color-theme-color'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"En savoir plus sur la s\u00e9rie EA\"><span class='avia_iconbox_title' >En savoir plus sur la s\u00e9rie EA<\/span><\/a><\/div><\/p><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" 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