{"id":5394,"date":"2019-05-14T16:14:41","date_gmt":"2019-05-14T16:14:41","guid":{"rendered":"https:\/\/nanovea.com\/?p=5394"},"modified":"2022-07-07T20:28:46","modified_gmt":"2022-07-07T20:28:46","slug":"transition-localisee-precise-du-verre-avec-nanoindentation-dma","status":"publish","type":"post","link":"https:\/\/nanovea.com\/fr\/transition-localisee-precise-du-verre-avec-nanoindentation-dma\/","title":{"rendered":"Transition vitreuse localis\u00e9e avec pr\u00e9cision gr\u00e2ce \u00e0 la nanoindentation DMA"},"content":{"rendered":"
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\n\t\t\t\t\t\t\t\t\tTransition vitreuse localis\u00e9e avec pr\u00e9cision gr\u00e2ce \u00e0 la nanoindentation DMA\n

\nEn savoir plus\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tImaginez un sc\u00e9nario dans lequel un \u00e9chantillon en vrac est chauff\u00e9 uniform\u00e9ment \u00e0 une vitesse constante. Lorsqu'un mat\u00e9riau en vrac se r\u00e9chauffe et approche de son point de fusion, il commence \u00e0 perdre sa rigidit\u00e9. Si des indentations p\u00e9riodiques (tests de duret\u00e9) sont r\u00e9alis\u00e9es avec la m\u00eame force cible, la profondeur de chaque indentation devrait augmenter constamment puisque l'\u00e9chantillon devient plus mou (voir figure 1). Ce ph\u00e9nom\u00e8ne se poursuit jusqu'\u00e0 ce que l'\u00e9chantillon commence \u00e0 fondre. \u00c0 ce stade, une forte augmentation de la profondeur par empreinte sera observ\u00e9e. En utilisant ce concept, le changement de phase dans un mat\u00e9riau peut \u00eatre observ\u00e9 en utilisant des oscillations dynamiques avec une amplitude de force fixe et en mesurant son d\u00e9placement, c'est-\u00e0-dire l'analyse m\u00e9canique dynamique (DMA).\n\n \n\nD\u00e9couvrez la transition vitreuse localis\u00e9e et pr\u00e9cise !<\/strong><\/a>\n\n\"\"<\/a>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Mesure de la relaxation des contraintes par nanoindentation<\/p>

En savoir plus<\/p>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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MAINTENANT, PARLONS DE VOTRE CANDIDATURE<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tCHAT EN DIRECT<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Transition vitreuse localis\u00e9e avec pr\u00e9cision gr\u00e2ce \u00e0 la nanoindentation DMA En savoir plus<\/p>","protected":false},"author":1,"featured_media":5379,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[7,339,338,343,349,337],"tags":[],"class_list":["post-5394","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application-notes","category-high-temperature-mechanical-testing","category-indentation-hardness-elastic","category-loss-storage","category-laboratory-testing","category-mechanical-testing"],"_links":{"self":[{"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/posts\/5394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/comments?post=5394"}],"version-history":[{"count":15,"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/posts\/5394\/revisions"}],"predecessor-version":[{"id":21065,"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/posts\/5394\/revisions\/21065"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/media\/5379"}],"wp:attachment":[{"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/media?parent=5394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/categories?post=5394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nanovea.com\/fr\/wp-json\/wp\/v2\/tags?post=5394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}