{"id":41048,"date":"2024-07-26T10:27:01","date_gmt":"2024-07-26T08:27:01","guid":{"rendered":"https:\/\/www.linseis.com\/service-et-assistance\/methodes-danalyse-thermique\/la-methode-flash\/"},"modified":"2024-12-12T15:22:11","modified_gmt":"2024-12-12T14:22:11","slug":"la-methode-flash","status":"publish","type":"page","link":"https:\/\/www.linseis.com\/fr\/methodes-danalyse-thermique\/la-methode-flash\/","title":{"rendered":"La m\u00e9thode Flash"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"41048\" class=\"elementor elementor-41048 elementor-22415\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3549cf e-flex e-con-boxed e-con e-parent\" data-id=\"a3549cf\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ac41c94 elementor-widget elementor-widget-image\" data-id=\"ac41c94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/\/linseis_scale-top-1.svg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a7b7feb e-con-full e-flex e-con e-child\" data-id=\"a7b7feb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6100945 e-con-full e-flex e-con e-child\" data-id=\"6100945\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cc1182c elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"cc1182c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:250}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\"><b>La m\u00e9thode Flash<\/b><\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6d91a43 e-con-full e-flex e-con e-child\" data-id=\"6d91a43\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9413374 elementor-widget elementor-widget-n-carousel\" data-id=\"9413374\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;carousel_items&quot;:[{&quot;slide_title&quot;:&quot;Produkt 1&quot;,&quot;_id&quot;:&quot;d6fbcdb&quot;}],&quot;slides_to_show&quot;:&quot;1&quot;,&quot;slides_to_scroll&quot;:&quot;2&quot;,&quot;autoplay_speed&quot;:2000,&quot;slides_to_show_tablet&quot;:&quot;1&quot;,&quot;slides_to_show_mobile&quot;:&quot;1&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;infinite&quot;:&quot;yes&quot;,&quot;speed&quot;:500,&quot;offset_sides&quot;:&quot;none&quot;,&quot;image_spacing_custom&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;image_spacing_custom_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;image_spacing_custom_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-carousel.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-carousel swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Carousel\" dir=\"ltr\">\n\t\t\t<div class=\"swiper-wrapper\" aria-live=\"off\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"1\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 sur 1\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-44441f5 e-flex e-con-boxed e-con e-child\" data-id=\"44441f5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4103051 elementor-widget__width-initial elementor-invisible elementor-widget elementor-widget-image\" data-id=\"4103051\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-1024x1024.png\" class=\"attachment-large size-large wp-image-23732\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-1024x1024.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-300x300.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-150x150.png 150w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-768x768.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-1536x1536.png 1536w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/Linseis-Icons_Linien-weiss_Zeichenflaeche-1-Kopie-87-2048x2048.png 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b4a6800 elementor-widget elementor-widget-image\" data-id=\"b4a6800\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/\/linseis_scale-bottom-1.svg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7c8d6cc e-flex e-con-boxed e-con e-parent\" data-id=\"7c8d6cc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d7b7522 e-flex e-con-boxed e-con e-parent\" data-id=\"d7b7522\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-449b6fd e-con-full e-flex e-con e-child\" data-id=\"449b6fd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-031217d elementor-invisible elementor-widget elementor-widget-wp-widget-bcn_widget\" data-id=\"031217d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"wp-widget-bcn_widget.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"breadcrumbs\" vocab=\"https:\/\/schema.org\/\" typeof=\"BreadcrumbList\"><span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" title=\"Aller \u00e0 Linseis.\" href=\"https:\/\/www.linseis.com\/fr\/\" class=\"home\" aria-current=\"page\"><span property=\"name\">Linseis<\/span><\/a><meta property=\"position\" content=\"1\"><\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ed98f58 e-flex e-con-boxed e-con e-parent\" data-id=\"ed98f58\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-bbc47b3 e-con-full e-flex e-con e-child\" data-id=\"bbc47b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-71a1ec4 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"71a1ec4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>La m\u00e9thode Flash<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32d9053 elementor-widget elementor-widget-text-editor\" data-id=\"32d9053\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La m\u00e9thode Flash est une m\u00e9thode de d\u00e9termination de la <a href=\"https:\/\/www.linseis.com\/fr\/proprietes\/diffusivite-thermique\/\"><strong>diffusivit\u00e9 thermique<\/strong><\/a> de diff\u00e9rents mat\u00e9riaux.<\/p><p>Pour ce faire, l&rsquo;\u00e9chantillon est soumis \u00e0 une impulsion d&rsquo;\u00e9nergie radiante de courte dur\u00e9e et de forte intensit\u00e9.<br \/>La source d&rsquo;\u00e9nergie peut \u00eatre un laser ou une lampe flash.<br \/>L&rsquo;\u00e9nergie est alors absorb\u00e9e par l&rsquo;\u00e9chantillon et \u00e9mise \u00e0 nouveau sur la partie sup\u00e9rieure de l&rsquo;\u00e9chantillon.<br \/>Ce rayonnement entra\u00eene une augmentation de la temp\u00e9rature \u00e0 la surface de l&rsquo;\u00e9chantillon.<br \/>Cette augmentation de temp\u00e9rature est enregistr\u00e9e par un d\u00e9tecteur infrarouge (IR).<\/p><p>Le sch\u00e9ma de l&rsquo;installation et de la proc\u00e9dure de mesure est illustr\u00e9 dans la figure suivante.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe4080d elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"fe4080d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<section class=\"container\">\n<div class=\"row\">\n<div class=\"spb_content_element col-sm-12 spb_text_column\">\n<div class=\"spb_wrapper clearfix\">\n<p><img decoding=\"async\" class=\"aligncenter wp-image-12009 size-large\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/PLH-Cross-Plane-Methode-1024x452.png\" alt=\"\" width=\"1024\" height=\"452\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/PLH-Cross-Plane-Methode-1024x452.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/PLH-Cross-Plane-Methode-300x132.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/PLH-Cross-Plane-Methode-768x339.png 768w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/PLH-Cross-Plane-Methode-1536x678.png 1536w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/PLH-Cross-Plane-Methode-2048x904.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64ed86b elementor-widget elementor-widget-text-editor\" data-id=\"64ed86b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<section class=\"container\">\n<div class=\"row\">\n<div class=\"spb_content_element col-sm-12 spb_text_column\">\n<div class=\"spb_wrapper clearfix\">\n<p>Le signal du d\u00e9tecteur indique la dur\u00e9e de la mesure et l&rsquo;augmentation normalis\u00e9e de la temp\u00e9rature \u00e0 la surface de l&rsquo;\u00e9chantillon, l\u00e0 o\u00f9 l&rsquo;impulsion lumineuse se produit.\nPour calculer la diffusivit\u00e9 thermique, il est n\u00e9cessaire de d\u00e9terminer la ligne de base et l&rsquo;augmentation maximale de la temp\u00e9rature.\nCela se fait \u00e0 l&rsquo;aide d&rsquo;un mod\u00e8le d&rsquo;ajustement adapt\u00e9.\nEn outre, le mod\u00e8le d\u00e9termine le moment o\u00f9 la moiti\u00e9 de l&rsquo;augmentation de temp\u00e9rature maximale a \u00e9t\u00e9 atteinte.   <\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63cdf9f elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"63cdf9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<section class=\"container\">\n<div class=\"row\">\n<div class=\"spb_content_element col-sm-12 spb_text_column\">\n<div class=\"spb_wrapper clearfix\">\n<p><img decoding=\"async\" class=\"wp-image-22419 size-full aligncenter\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/LFA-Temperature-Rinse_2.png\" alt=\"\" width=\"596\" height=\"375\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/LFA-Temperature-Rinse_2.png 596w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/LFA-Temperature-Rinse_2-300x189.png 300w\" sizes=\"(max-width: 596px) 100vw, 596px\" \/><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b0d0537 elementor-widget elementor-widget-text-editor\" data-id=\"b0d0537\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La diffusivit\u00e9 thermique est calcul\u00e9e \u00e0 l&rsquo;aide de la formule suivante, o\u00f9 l&rsquo;\u00e9paisseur de l&rsquo;\u00e9chantillon et le temps de mont\u00e9e sont d\u00e9crits.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-771f150 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"771f150\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<section class=\"container\">\n<div class=\"row\">\n<div class=\"spb_content_element col-sm-12 spb_text_column\">\n<div class=\"spb_wrapper clearfix\">\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-22426 size-full\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/alpha-equotation.png\" alt=\"\" width=\"288\" height=\"129\"><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b4bb58a elementor-widget elementor-widget-text-editor\" data-id=\"b4bb58a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Cette formule est d\u00e9riv\u00e9e du mod\u00e8le physique du comportement thermique d&rsquo;une plaque de mat\u00e9riau adiabatique d&rsquo;\u00e9paisseur constante, qui a \u00e9t\u00e9 irradi\u00e9e \u00e0 une temp\u00e9rature constante par une courte impulsion d&rsquo;\u00e9nergie.\nDiff\u00e9rentes hypoth\u00e8ses sont formul\u00e9es, qui diff\u00e8rent de la r\u00e9alit\u00e9.\nCes \u00e9carts par rapport \u00e0 la r\u00e9alit\u00e9 sont pris en compte dans les mod\u00e8les d&rsquo;ajustement et incluent une longueur d&rsquo;impulsion finie de la source d&rsquo;\u00e9nergie et la perte de chaleur de l&rsquo;\u00e9chantillon dans le voisinage.  <\/p>\n<p><strong>En connaissant la densit\u00e9 et la capacit\u00e9 thermique sp\u00e9cifique de l&rsquo;\u00e9chantillon, la conductivit\u00e9 thermique peut \u00eatre calcul\u00e9e \u00e0 l&rsquo;aide de l&rsquo;\u00e9quation suivante.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26bec37 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"26bec37\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<section class=\"container\">\n<div class=\"row\">\n<div class=\"spb_content_element col-sm-12 spb_text_column\">\n<div class=\"spb_wrapper clearfix\">\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-22433 size-full\" src=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/equation-thermal-conductivity.png\" alt=\"\" width=\"383\" height=\"78\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/equation-thermal-conductivity.png 383w, https:\/\/www.linseis.com\/wp-content\/uploads\/2024\/07\/equation-thermal-conductivity-300x61.png 300w\" sizes=\"(max-width: 383px) 100vw, 383px\" \/><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dba4700 elementor-widget elementor-widget-text-editor\" data-id=\"dba4700\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Il faut tenir compte du fait que les param\u00e8tres d\u00e9pendent de la temp\u00e9rature.\nIl est donc n\u00e9cessaire de mesurer ces propri\u00e9t\u00e9s en fonction de la temp\u00e9rature pour caract\u00e9riser le mat\u00e9riau. <\/p>\n<p>Les avantages de la m\u00e9thode Flash sont des mesures rapides et non destructives d&rsquo;\u00e9chantillons faiblement ou fortement conducteurs.\nEn outre, la g\u00e9om\u00e9trie requise pour l&rsquo;\u00e9chantillon est simple et de petits \u00e9chantillons faciles \u00e0 pr\u00e9parer peuvent \u00eatre \u00e9tudi\u00e9s. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8801439 e-flex e-con-boxed e-con e-parent\" data-id=\"8801439\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4fda86f e-con-full e-flex e-con e-child\" data-id=\"4fda86f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a0a9aac e-con-full e-flex e-con e-child\" data-id=\"a0a9aac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53ea4ef elementor-widget elementor-widget-text-editor\" data-id=\"53ea4ef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Quelles sont les propri\u00e9t\u00e9s d\u00e9termin\u00e9es par la m\u00e9thode Flash ?<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d38f832 elementor-widget elementor-widget-text-editor\" data-id=\"d38f832\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La m\u00e9thode Flash permet de d\u00e9terminer la diffusivit\u00e9 thermique.<br \/>En utilisant un mat\u00e9riau de r\u00e9f\u00e9rence appropri\u00e9, il est \u00e9galement possible de mesurer la capacit\u00e9 thermique sp\u00e9cifique par une m\u00e9thode comparative.<br \/>La diffusivit\u00e9 thermique, la capacit\u00e9 thermique sp\u00e9cifique et la densit\u00e9 peuvent ensuite \u00eatre utilis\u00e9es pour calculer la conductivit\u00e9 thermique.<\/p><p><strong>Propri\u00e9t\u00e9s :<\/strong><\/p><ul><li>Diffusion thermique<\/li><li><a href=\"https:\/\/www.linseis.com\/fr\/proprietes\/capacite-thermique-specifique\/\"><strong>capacit\u00e9 thermique sp\u00e9cifique<\/strong><\/a><\/li><li><a href=\"https:\/\/www.linseis.com\/fr\/connaissance\/determination-de-la-densite-cte\/\"><strong>densit\u00e9<\/strong><\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e2e8489 e-con-full e-flex e-con e-child\" data-id=\"e2e8489\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5a584c2 e-con-full e-flex e-con e-child\" data-id=\"5a584c2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2111823 elementor-widget elementor-widget-text-editor\" data-id=\"2111823\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Quelles sont les normes qui comptent pour la m\u00e9thode Flash ?<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82f4194 elementor-widget elementor-widget-text-editor\" data-id=\"82f4194\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li>ASTM E1461 &#8211; M\u00e9thode d&rsquo;essai standard pour la diffusivit\u00e9 thermique par la m\u00e9thode flash<\/li>\n<li>ASTM E2585 &#8211; 09(2015) Pratique standard pour la diffusivit\u00e9 thermique par la m\u00e9thode Flash<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>La m\u00e9thode Flash La m\u00e9thode Flash La m\u00e9thode Flash est une m\u00e9thode de d\u00e9termination de la diffusivit\u00e9 thermique de diff\u00e9rents mat\u00e9riaux. Pour ce faire, l&rsquo;\u00e9chantillon est soumis \u00e0 une impulsion d&rsquo;\u00e9nergie radiante de courte dur\u00e9e et de forte intensit\u00e9.La source d&rsquo;\u00e9nergie peut \u00eatre un laser ou une lampe flash.L&rsquo;\u00e9nergie est alors absorb\u00e9e par l&rsquo;\u00e9chantillon et [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":41027,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-41048","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/pages\/41048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/comments?post=41048"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/pages\/41048\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/pages\/41027"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/media?parent=41048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}