{"id":14967,"date":"2024-11-18T06:25:39","date_gmt":"2024-11-18T05:25:39","guid":{"rendered":"http:\/\/themacsebi.cluster011.ovh.net\/?p=14967"},"modified":"2026-11-05T13:54:07","modified_gmt":"2026-11-05T13:54:07","slug":"dilatometry-measuring-the-cte-coefficient-of-thermal-expansion-from-20-to-330k","status":"publish","type":"post","link":"https:\/\/preprod.themacs-engineering.com\/en\/dilatometry-measuring-the-cte-coefficient-of-thermal-expansion-from-20-to-330k\/","title":{"rendered":"Dilatometry: Measuring the CTE (coefficient of thermal expansion) from 300 to 20K"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"14967\" class=\"elementor elementor-14967\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f44b403 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f44b403\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-87cedea\" data-id=\"87cedea\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9d2ae81 elementor-widget elementor-widget-text-editor\" data-id=\"9d2ae81\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>First prototype of an interferometer for measuring the coefficient of thermal expansion :<\/p><p>Measuring the CTE (coefficient of thermal expansion) from 300 to 20K requires non-contact measurement. We have developed a laser interferometer to measure thermal expansion, which is essential for calibrating thermo-physical properties such as conductivity or heat capacity, which are dimensional and volumetric quantities.<\/p><p>The device eliminates the thermal expansion of the various materials making up the interferometer, because we have a zero-sum thickness between the sample and the two reference mirrors. There is still some development to do before the first measurements, which will take place in 2025.<\/p><p>Measurements will be taken using a camera coupled to a Python programme that recognises the shape of the interference fringes.<\/p><p>This data will be crucial for the storage of liquid hydrogen.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9733b0c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9733b0c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6df80b1\" data-id=\"6df80b1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2394c17 elementor-widget elementor-widget-video\" data-id=\"2394c17\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/TRTvrKcztJg&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Measuring the CTE (coefficient of thermal expansion) from 300 to 20K requires non-contact measurement. <\/p>\n","protected":false},"author":1,"featured_media":14959,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[],"class_list":["post-14967","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-en-us"],"_links":{"self":[{"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/posts\/14967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/comments?post=14967"}],"version-history":[{"count":1,"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/posts\/14967\/revisions"}],"predecessor-version":[{"id":25354,"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/posts\/14967\/revisions\/25354"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/media\/14959"}],"wp:attachment":[{"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/media?parent=14967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/categories?post=14967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/preprod.themacs-engineering.com\/en\/wp-json\/wp\/v2\/tags?post=14967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}