{"id":87273,"date":"2025-06-16T14:43:53","date_gmt":"2025-06-16T12:43:53","guid":{"rendered":"https:\/\/www.linseis.com\/non-classifiee\/dilatation-thermique\/"},"modified":"2025-07-31T07:27:58","modified_gmt":"2025-07-31T05:27:58","slug":"dilatation-thermique","status":"publish","type":"post","link":"https:\/\/www.linseis.com\/fr\/connaissance\/dilatation-thermique\/","title":{"rendered":"Dilatation thermique"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"87273\" class=\"elementor elementor-87273 elementor-85820\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20e7cce e-con-full e-flex e-con e-parent\" data-id=\"20e7cce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-330d9bc e-con-full e-flex e-con e-child\" data-id=\"330d9bc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2fab8da e-con-full e-flex e-con e-child\" data-id=\"2fab8da\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-756ba2d e-con-full e-flex e-con e-child\" data-id=\"756ba2d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-54ab761 e-con-full e-flex e-con e-child\" data-id=\"54ab761\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6204ea8 elementor-toc--minimized-on-tablet elementor-invisible elementor-widget elementor-widget-table-of-contents\" data-id=\"6204ea8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;],&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h2 class=\"elementor-toc__header-title\">\n\t\t\t\tTable des mati\u00e8res :\t\t\t<\/h2>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__6204ea8\" aria-expanded=\"true\" aria-label=\"Ouvrir la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__6204ea8\" aria-expanded=\"true\" aria-label=\"Fermer la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__6204ea8\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\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 class=\"elementor-element elementor-element-b10c2f5 elementor-widget elementor-widget-spacer\" data-id=\"b10c2f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-8a71db9 elementor-widget elementor-widget-spacer\" data-id=\"8a71db9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-5ef1fd4 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5ef1fd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Dilatation thermique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a88229 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"2a88229\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Introduction \u00e0 la dilatation thermique<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77833f4 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"77833f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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 dilatation thermique &#8211; \u00e9galement connue sous le nom d&rsquo;expansion thermique &#8211; est un ph\u00e9nom\u00e8ne physique qui concerne aussi bien la vie quotidienne que la technologie. Elle d\u00e9crit le changement des dimensions g\u00e9om\u00e9triques d&rsquo;un corps lorsque sa temp\u00e9rature change. La compr\u00e9hension et la mesure pr\u00e9cise de cette propri\u00e9t\u00e9 sont particuli\u00e8rement importantes dans les domaines de la construction, de l&rsquo;ing\u00e9nierie m\u00e9canique et de la recherche sur les mat\u00e9riaux.  <\/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-50e1380 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"50e1380\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Principes de l'expansion thermique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cffc1d6 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"cffc1d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Qu'est-ce que la dilatation thermique ?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d182312 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"d182312\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>Une augmentation de la temp\u00e9rature accro\u00eet le mouvement mol\u00e9culaire au niveau des particules d&rsquo;un mat\u00e9riau et, par cons\u00e9quent, son besoin d&rsquo;espace augmente \u00e9galement. Il en r\u00e9sulte une expansion du mat\u00e9riau. Lors du refroidissement, le besoin d&rsquo;espace diminue \u00e0 nouveau et une contraction thermique se produit en cons\u00e9quence.  <\/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-0f43171 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"0f43171\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Causes et principe physique<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a261340 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"a261340\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><li>La cause en est l&rsquo;augmentation de l&rsquo;\u00e9nergie cin\u00e9tique des particules lorsqu&rsquo;elles sont chauff\u00e9es.<\/li><li>La distance entre les particules augmente en cons\u00e9quence.<\/li><li>Chaque mat\u00e9riau a un coefficient de dilatation caract\u00e9ristique, qui indique de combien il se dilate lorsque la temp\u00e9rature change, en fonction des particules qu&rsquo;il contient et de leurs degr\u00e9s de libert\u00e9.<\/li><\/ul>\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-affb892 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"affb892\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Formes de dilatation thermique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-397871d elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"397871d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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 dilatation thermique peut se manifester dans diff\u00e9rentes dimensions en fonction de la forme du corps et de la composition du mat\u00e9riau : en longueur, en surface ou en volume.<\/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-81c6ff9 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"81c6ff9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Expansion lin\u00e9aire<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-521c097 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"521c097\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>Dans le cas de la dilatation lin\u00e9aire, la longueur d&rsquo;un corps change le long d&rsquo;un axe, par exemple dans le cas d&rsquo;une tige m\u00e9tallique, qui s&rsquo;allonge visiblement lorsqu&rsquo;elle est chauff\u00e9e. Cette forme de dilatation thermique est facile \u00e0 mesurer et constitue l&rsquo;application la plus courante. <\/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-499af99 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"499af99\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Expansion de la surface<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7083afa elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"7083afa\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>Dans ce cas, la surface d&rsquo;un corps augmente &#8211; typiquement dans le cas de feuilles ou de films qui se dilatent uniform\u00e9ment dans deux directions spatiales.<\/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-8709bba elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"8709bba\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Expansion du volume<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1303a2e elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"1303a2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>L&rsquo;expansion volumique d\u00e9signe l&rsquo;expansion spatiale dans les trois directions. Elle se produit principalement dans les liquides et les gaz, mais peut \u00e9galement \u00eatre observ\u00e9e dans les solides et calcul\u00e9e en partie \u00e0 partir de la dilatation lin\u00e9aire d&rsquo;un axe. <\/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-5fe1e3d elementor-widget__width-initial elementor-invisible elementor-widget elementor-widget-image\" data-id=\"5fe1e3d\" 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<figure class=\"wp-caption\">\n\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\/2025\/06\/Thermal-Expansion-1.png\" class=\"attachment-large size-large wp-image-85838\" alt=\"\" srcset=\"https:\/\/www.linseis.com\/wp-content\/uploads\/2025\/06\/Thermal-Expansion-1.png 1024w, https:\/\/www.linseis.com\/wp-content\/uploads\/2025\/06\/Thermal-Expansion-1-300x300.png 300w, https:\/\/www.linseis.com\/wp-content\/uploads\/2025\/06\/Thermal-Expansion-1-150x150.png 150w, https:\/\/www.linseis.com\/wp-content\/uploads\/2025\/06\/Thermal-Expansion-1-768x768.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\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-3120c46 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"3120c46\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Description math\u00e9matique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aae0b1f elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"aae0b1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Expansion lin\u00e9aire<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e48ceb0 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"e48ceb0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>\\(<br \/>\\Delta L = \\alpha \\cdot L_0 \\cdot \\Delta T<br \/>\\quad \\text{o\u00f9} \\quad<br \/>\\begin{cases}<br \/>\\Delta L : \\text{Changement de longueur (m)} \\\\<br \/>\\alpha : \\text{Coefficient de dilatation lin\u00e9aire (1\/K)} \\\\<br \/>L_0 : \\text{Longueur initiale (m)} \\\\<br \/>\\Delta T : \\text{Changement de temp\u00e9rature (K)}<br \/>\\end{cases}<br \/>\\)<\/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-fec8579 elementor-widget elementor-widget-spacer\" data-id=\"fec8579\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-117eb24 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"117eb24\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Expansion du volume<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c7748e elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"1c7748e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>\\(<br \/>\\Delta V = \\gamma \\cdot V_0 \\cdot \\Delta T<br \/>\\quad \\text{o\u00f9} \\quad<br \/>\\begin{cases}<br \/>\\Delta V : \\text{Changement de volume (m\u00b3)} \\\\<br \/>\\gamma : \\text{Coefficient de dilatation volumique (1\/K)} \\\\<br \/>V_0 : \\text{Volume initial (m\u00b3)} \\\\<br \/>\\Delta T : \\text{Changement de temp\u00e9rature (K)}<br \/>\\end{cases}<br \/>\\)<\/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-10ceced elementor-widget elementor-widget-spacer\" data-id=\"10ceced\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-eee1ba8 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"eee1ba8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9thodes de mesure pour d\u00e9terminer la dilatation thermique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-727b42d elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"727b42d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Dilatom\u00e8tre<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f231dcf elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"f231dcf\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>Un dilatom\u00e8tre mesure le changement de longueur ou de volume d&rsquo;un \u00e9chantillon de temp\u00e9rature d\u00e9finie et le changement de temp\u00e9rature. L&rsquo;\u00e9chantillon est chauff\u00e9 ou refroidi et sa variation de longueur est transmise \u00e0 un transducteur de d\u00e9placement par l&rsquo;interm\u00e9diaire d&rsquo;une tige de pouss\u00e9e. La dilatation inh\u00e9rente au syst\u00e8me de mesure est compens\u00e9e ou corrig\u00e9e \u00e0 l&rsquo;aide d&rsquo;un mat\u00e9riau de r\u00e9f\u00e9rence.  <\/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-2cf348c elementor-widget elementor-widget-spacer\" data-id=\"2cf348c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-0687a0f elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"0687a0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><strong>Variables mesur\u00e9es typiques :<\/strong><\/p><ul><li>Coefficient lin\u00e9aire de dilatation thermique (CTE)<\/li><li>Temp\u00e9ratures et \u00e9tapes de frittage<\/li><li>Temp\u00e9ratures de transition vitreuse (Tg)<\/li><li>Transitions de phase<\/li><li>Changements de volume et de densit\u00e9<\/li><\/ul><p><strong>Domaines d&rsquo;application :<\/strong><\/p><ul><li>Mat\u00e9riaux : M\u00e9taux, c\u00e9ramiques, verres, polym\u00e8res, composites<\/li><li>Plage de temp\u00e9rature possible : -260 \u00b0C \u00e0 +2800 \u00b0C (selon la configuration de l&rsquo;appareil)<\/li><\/ul>\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-eed1324 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"eed1324\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Analyse thermom\u00e9canique (TMA)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4864a43 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"4864a43\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>L&rsquo;analyse thermom\u00e9canique (TMA) est une m\u00e9thode permettant de mesurer les changements dimensionnels sous une charge m\u00e9canique \u00e0 une temp\u00e9rature d\u00e9finie. Une sonde appuie sur l&rsquo;\u00e9chantillon avec une force constante tandis que la temp\u00e9rature varie lentement. Un capteur, souvent un transformateur diff\u00e9rentiel ou LVDT (Linear Variable Differential Transformer), mesure en temps r\u00e9el les variations de longueur qui en r\u00e9sultent.  <\/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-29d7c21 elementor-widget elementor-widget-spacer\" data-id=\"29d7c21\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-8812c3b elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"8812c3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><strong>Propri\u00e9t\u00e9s mesur\u00e9es :<\/strong><\/p><ul><li>Expansion lin\u00e9aire et coefficient d&rsquo;expansion<\/li><li>Points d&rsquo;adoucissement<\/li><li>Processus de r\u00e9traction pendant le frittage<\/li><li>Transition vitreuse, point de fusion, cristallisation<\/li><li>Fluage et relaxation (d\u00e9formation sous charge en fonction du temps)<\/li><\/ul><p><strong>Applications typiques :<\/strong><\/p><ul><li>Analyse des solides, des liquides et des mati\u00e8res p\u00e2teuses<\/li><li>Convient pour : Plastiques, \u00e9lastom\u00e8res, adh\u00e9sifs, m\u00e9taux, c\u00e9ramiques, composites<\/li><li>Compl\u00e8te d&rsquo;autres m\u00e9thodes telles que DSC, TGA et DMA<\/li><\/ul>\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-d4cbe93 elementor-widget elementor-widget-spacer\" data-id=\"d4cbe93\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-9d000c2 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"9d000c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>Gr\u00e2ce \u00e0 sa grande sensibilit\u00e9, le TMA permet non seulement de d\u00e9terminer l&rsquo;expansion, mais aussi de d\u00e9tecter de faibles transitions physiques, telles que des changements dans le r\u00e9seau cristallin, le durcissement ou la d\u00e9lamination. Il s&rsquo;agit donc d&rsquo;un outil polyvalent pour la recherche et l&rsquo;industrie. <\/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-f03bf48 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"f03bf48\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Utilisation de dilatom\u00e8tres pour analyser la dilatation thermique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c3b7d41 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"c3b7d41\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Fonctionnalit\u00e9 en d\u00e9tail<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-887d0a3 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"887d0a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>Les dilatom\u00e8tres sont des instruments essentiels pour d\u00e9terminer la dilatation thermique des mat\u00e9riaux. La mesure est effectu\u00e9e soit \u00e0 l&rsquo;aide de composants m\u00e9caniques tels qu&rsquo;une tige de pouss\u00e9e, soit sans contact \u00e0 l&rsquo;aide de capteurs optiques. L&rsquo;\u00e9chantillon est plac\u00e9 dans un four chauff\u00e9 dans lequel un profil de temp\u00e9rature d\u00e9fini est appliqu\u00e9. Lorsque la temp\u00e9rature change, un transducteur de d\u00e9placement de haute pr\u00e9cision mesure le changement de longueur du mat\u00e9riau de l&rsquo;\u00e9chantillon. Cette mesure permet de d\u00e9terminer le coefficient lin\u00e9aire de dilatation thermique (CTE), un param\u00e8tre essentiel pour d\u00e9crire le comportement thermique des mat\u00e9riaux.    <\/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-67d18b5 elementor-widget elementor-widget-spacer\" data-id=\"67d18b5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/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 class=\"elementor-element elementor-element-f439301 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"f439301\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><strong>Les \u00e9tapes cl\u00e9s du processus de mesure :<\/strong><\/p><ul><li>L&rsquo;\u00e9chantillon est chauff\u00e9 ou refroidi de mani\u00e8re contr\u00f4l\u00e9e.<\/li><li>Le changement de longueur qui en r\u00e9sulte est enregistr\u00e9 avec une grande pr\u00e9cision.<\/li><li>Le CTE est calcul\u00e9 \u00e0 partir du rapport entre le changement de longueur et le changement de temp\u00e9rature.<\/li><\/ul><div> <\/div><p>Cette m\u00e9thode permet une r\u00e9solution inf\u00e9rieure au microm\u00e8tre et convient aussi bien aux contr\u00f4les de qualit\u00e9 de routine qu&rsquo;aux applications de recherche.<\/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-60aaa12 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"60aaa12\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Applications et variables mesur\u00e9es typiques<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50bc3df elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"50bc3df\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>Les dilatom\u00e8tres fournissent une vari\u00e9t\u00e9 de param\u00e8tres mesurables qui sont d&rsquo;une importance capitale pour le d\u00e9veloppement des mat\u00e9riaux et les processus industriels :<\/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-7580681 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"7580681\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><strong>Applications typiques :<\/strong><\/p><ul><li>D\u00e9termination des transitions vitreuses et des transitions de phase<\/li><li>Analyse du comportement de retrait dans les processus de frittage<\/li><li>Mesure des variations de volume et de densit\u00e9<\/li><li>Utilisation dans l&rsquo;assurance qualit\u00e9, le d\u00e9veloppement de mat\u00e9riaux et la recherche<\/li><\/ul>\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-4776162 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"4776162\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Diff\u00e9rences entre les mat\u00e9riaux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3cde593 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"3cde593\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Comparaison des coefficients d'expansion<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eff1649 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"eff1649\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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 \t<li>Plastiques : par exemple PE = 2,<sup>10-4<\/sup> <sup> K-1<\/sup> K<\/li>\n \t<li>M\u00e9taux : aluminium = 23,<sup>8-10-6<\/sup> <sup> K-1<\/sup>, Stahl = <sup> 11-1310-6<\/sup> <sup> K-1<\/sup> <\/li>\n \t<li>C\u00e9ramique\/verre : Al\u2082O\u2083 = 7,<sup>5-10-6<\/sup> <sup> K-1<\/sup> <\/li>\n \t<li>Mat\u00e9riaux sp\u00e9ciaux : Invar = 0,55-1,<sup>2-10-6<\/sup> <sup> K-1<\/sup> <\/li>\n<\/ul>\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-d11584f elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"d11584f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Importance pour les applications techniques<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3334d97 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"3334d97\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><li>Des diff\u00e9rences importantes peuvent entra\u00eener des tensions et des ruptures de mat\u00e9riaux.<\/li><li>La s\u00e9lection pr\u00e9cise des mat\u00e9riaux est cruciale pour des conceptions durables.<\/li><\/ul>\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-c6db477 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"c6db477\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Applications pratiques et d\u00e9fis<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d04f6b1 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"d04f6b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Importance interprofessionnelle<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aff03be elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"aff03be\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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 dilatation thermique est une question cl\u00e9 dans de nombreuses disciplines techniques. Selon le domaine d&rsquo;application, elle peut \u00eatre utilis\u00e9e de mani\u00e8re cibl\u00e9e ou doit \u00eatre activement compens\u00e9e afin d&rsquo;\u00e9viter des dommages aux composants ou des pertes fonctionnelles. Des mesures de conception bien pens\u00e9es sont essentielles, en particulier en cas de changements de temp\u00e9rature permanents, comme c&rsquo;est le cas dans de nombreux environnements techniques.  <\/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-5d66ef4 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5d66ef4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Domaines d'application typiques de\n:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb1baa1 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"bb1baa1\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><li>Construction : Les joints de dilatation dans les ponts, les chauss\u00e9es ou les pipelines garantissent que les mat\u00e9riaux peuvent se dilater ou se contracter en fonction des changements de temp\u00e9rature sans provoquer de fissures ou de dommages structurels.<\/li><li>Ing\u00e9nierie m\u00e9canique : Dans les machines et les installations, des composants ayant des comportements de dilatation diff\u00e9rents doivent souvent fonctionner ensemble. Si ces diff\u00e9rences ne sont pas prises en compte, il existe un risque de tension, de fuite ou d&rsquo;usure pr\u00e9matur\u00e9e. <\/li><li>\u00c9lectronique : Les cartes de circuits imprim\u00e9s, les semi-conducteurs et les bo\u00eetiers sont souvent constitu\u00e9s de mat\u00e9riaux diff\u00e9rents. Une combinaison incorrecte avec des valeurs CTE diff\u00e9rentes peut entra\u00eener des ruptures de joints de soudure ou des fissures dans les mat\u00e9riaux. <\/li><li>L&rsquo;a\u00e9rospatiale : Les exigences sont particuli\u00e8rement \u00e9lev\u00e9es. Les composants doivent pouvoir r\u00e9sister au froid extr\u00eame dans l&rsquo;espace et \u00e0 la chaleur extr\u00eame dans l&rsquo;atmosph\u00e8re, sans se d\u00e9former ni perdre leur fonction. <\/li><\/ul>\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-8366138 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"8366138\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Exemples pratiques<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0f6c2cf elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"0f6c2cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><li>Les voies ferr\u00e9es sont pos\u00e9es avec des interstices pour \u00e9viter les d\u00e9formations dues \u00e0 la dilatation thermique.<\/li><li>Le verre borosilicat\u00e9 utilis\u00e9 dans les r\u00e9cipients de laboratoire et de cuisine r\u00e9siste aux chocs thermiques gr\u00e2ce \u00e0 son faible coefficient de dilatation.<\/li><li>L&rsquo;eau se dilate lorsqu&rsquo;elle g\u00e8le &#8211; une exception qui permet \u00e0 la glace de flotter sur l&rsquo;eau et de l&rsquo;isoler.<\/li><\/ul>\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-8836db2 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"8836db2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-492d64f elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"492d64f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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 dilatation thermique est un ph\u00e9nom\u00e8ne central en physique et en technologie. Sa connaissance exacte et sa mesure pr\u00e9cise \u00e0 l&rsquo;aide de dilatom\u00e8tres ou de TMA permettent d&rsquo;optimiser les mat\u00e9riaux en fonction de leur application. Il est ainsi possible de d\u00e9velopper des produits qui fonctionnent de mani\u00e8re fiable m\u00eame dans des conditions extr\u00eames, que ce soit dans l&rsquo;industrie, la recherche ou la vie quotidienne.  <\/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-16379ac elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"16379ac\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Sources recommand\u00e9es pour une \u00e9tude approfondie<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2049310 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"2049310\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><li><a href=\"https:\/\/www.leifiphysik.de\/waermelehre\/ausdehnung-bei-erwaermung\/grundwissen\/volumen-und-laengenaenderung-von-festkoerpern\" target=\"_blank\" rel=\"noopener\">LEIFIphysik : Volumen- und L\u00e4ngen\u00e4nderung von Festk\u00f6rpern<\/a><br>(Grundlagen der W\u00e4rmeausdehnung anschaulich erkl\u00e4rt)<\/li><li><a href=\"https:\/\/de.wikipedia.org\/wiki\/W%C3%A4rmeausdehnung\" target=\"_blank\" rel=\"noopener\">Wikip\u00e9dia : W\u00e4rmeausdehnung<\/a><br>(\u00dcberblick \u00fcber Formen, Formeln und typische Werte)<\/li><li><a href=\"https:\/\/studyflix.de\/ingenieurwissenschaften\/waermeausdehnungskoeffizient-1091\" target=\"_blank\" rel=\"noopener\">Studyflix : La compensation des pertes d&rsquo;eau<\/a><br>(pr\u00e9sentation compacte avec des formulaires et des exemples)<\/li><li><a href=\"https:\/\/tu-dresden.de\/mn\/physik\/ressourcen\/dateien\/studium\/lehrveranstaltungen\/praktika\/pdf\/TA.pdf?lang=de\" target=\"_blank\" rel=\"noopener\">TU Dresden Praktikumsanleitung : Thermische Analyse<\/a><br>(Wissenschaftlich fundierte Messmethoden, inkl. TMA und Dilatometer)<\/li><li><a href=\"https:\/\/www.ptb.de\/cms\/fileadmin\/internet\/fachabteilungen\/abteilung_5\/5.3_koordinatenmesstechnik\/texte\/f_dilatometer.pdf\" target=\"_blank\" rel=\"noopener\">PTB &#8211; Physikalisch-Technische Bundesanstalt : Dilatom\u00e8tre<\/a><br>(Ausf\u00fchrliche technische Beschreibung von Dilatometern)<\/li><li><a href=\"https:\/\/wiki.polymerservice-merseburg.de\/index.php\/Thermomechanische_Analyse\" target=\"_blank\" rel=\"noopener\">Polymer Service Wiki : Thermomechanische Analyse<\/a><br>(Spezifische Anwendung und Funktionsweise von TMA)<\/li><li><a href=\"https:\/\/www.uni-due.de\/materials\/dilatometrie.shtml\" target=\"_blank\" rel=\"noopener\">Universit\u00e9 de Duisbourg-Essen : Dilatometrie<\/a><br>(Hintergrundinformationen zur thermischen Analyse fester Stoffe)<\/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\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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>La dilatation thermique est la modification des dimensions d&rsquo;un mat\u00e9riau sous l&rsquo;effet des changements de temp\u00e9rature. C&rsquo;est un facteur cl\u00e9 dans la construction, l&rsquo;ing\u00e9nierie et la recherche sur les mat\u00e9riaux.<\/p>\n","protected":false},"author":15,"featured_media":85824,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[106,187],"tags":[],"class_list":["post-87273","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wiki","category-connaissance"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/posts\/87273","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/comments?post=87273"}],"version-history":[{"count":0,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/posts\/87273\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/media\/85824"}],"wp:attachment":[{"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/media?parent=87273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/categories?post=87273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linseis.com\/fr\/wp-json\/wp\/v2\/tags?post=87273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}