{"id":246972,"date":"2025-10-29T12:28:09","date_gmt":"2025-10-29T16:28:09","guid":{"rendered":"https:\/\/cep-experts.ca\/?p=246972"},"modified":"2025-11-05T09:43:17","modified_gmt":"2025-11-05T14:43:17","slug":"la-microscopie-au-coeur-de-lanalyse-des-defaillances","status":"publish","type":"post","link":"https:\/\/cep-experts.ca\/fr\/la-microscopie-au-coeur-de-lanalyse-des-defaillances\/","title":{"rendered":"La microscopie, au c\u0153ur de l\u2019analyse des d\u00e9faillances"},"content":{"rendered":"\t\t
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\r\n\t\t\t\t\t\tAccueil<\/a><\/span><\/span>\t\t\t\t\t<\/div> \r\n\t\t\t\t<\/div> \r\n\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t[et_pb_section fb_built=\u00a0\u00bb1″ admin_label=\u00a0\u00bbsection\u00a0\u00bb _builder_version=\u00a0\u00bb4.20.4″ custom_margin=\u00a0\u00bb||0px||false|false\u00a0\u00bb custom_padding=\u00a0\u00bb0px||0px||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text admin_label=\u00a0\u00bbSub title\u00a0\u00bb module_class=\u00a0\u00bbh2-articles\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font=\u00a0\u00bb|700|||||||\u00a0\u00bb text_font_size=\u00a0\u00bb30px\u00a0\u00bb text_line_height=\u00a0\u00bb1.2em\u00a0\u00bb header_font=\u00a0\u00bb|700|||||||\u00a0\u00bb header_2_font=\u00a0\u00bb|700|||||||\u00a0\u00bb header_2_font_size=\u00a0\u00bb25px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Des insectes dans votre th\u00e9 aux fractures m\u00e9talliques, la microscopie d\u00e9voile ce que l\u2019\u0153il humain ne peut voir<\/strong><\/p>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbAuthor\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Par Carl Leblanc, chimiste, M. Sc., m\u00e9tallurgiste<\/p>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbTexte 1″ _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Pour les experts en mat\u00e9riaux et en chimie, le microscope constitue un outil incontournable. Cet instrument lui permet, entre autres, de comprendre les m\u00e9canismes de d\u00e9faillance, les caract\u00e9ristiques des mat\u00e9riaux, l\u2019origine de la contamination, ainsi que la nature et le mode de rupture des pi\u00e8ces. En effet, le microscope est g\u00e9n\u00e9ralement le\u00a0premier instrument\u00a0utilis\u00e9 par l\u2019expert pour poser un diagnostic et comprendre le mode de d\u00e9faillance.<\/strong><\/p>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbTexte 1″ _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Diff\u00e9rents types de microscopes peuvent \u00eatre utilis\u00e9s, allant du microscope binoculaire, qui permet une observation en trois dimensions, au microscope \u00e9lectronique, lequel utilise un faisceau d\u2019\u00e9lectrons au lieu de la lumi\u00e8re. Ce dernier offre un grossissement important ainsi qu\u2019une capacit\u00e9 d\u2019analyse \u00e9l\u00e9mentaire, ce qui permet d\u2019identifier les \u00e9l\u00e9ments chimiques pr\u00e9sents dans les \u00e9chantillons examin\u00e9s.<\/p>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbTexte 1″ _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Que peut-on observer \u00e0 l\u2019aide d\u2019un microscope optique sur des produits du quotidien? Prenons, par exemple, ce que l\u2019on peut retrouver dans du th\u00e9 (figure\u00a01)<\/strong> ou dans le beurre d\u2019arachide (figure\u00a02)<\/strong>. L\u2019observation au microscope permet d\u2019observer des structures invisibles \u00e0 l\u2019\u0153il nu. Le th\u00e9 pr\u00e9sente des quantit\u00e9s consid\u00e9rables de parties d\u2019insectes, alors que le beurre d\u2019arachide contient une concentration appr\u00e9ciable de particules inorganiques (particules de terre et\/ou de sable)\u00a0r\u00e9sultant\u00a0de\u00a0la\u00a0transformation\u00a0du\u00a0produit.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_2,1_2″ admin_label=\u00a0\u00bbContenu 2 colonnes: titres, paragraphes, texte bleu\u00a0\u00bb module_class=\u00a0\u00bbpost-2-columns\u00a0\u00bb _builder_version=\u00a0\u00bb4.21.0″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_2″ _builder_version=\u00a0\u00bb4.20.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_padding=\u00a0\u00bb10px|2%|||false|false\u00a0\u00bb custom_padding_tablet=\u00a0\u00bb0px|0%|||false|false\u00a0\u00bb custom_padding_phone=\u00a0\u00bb|0%|||false|false\u00a0\u00bb custom_padding_last_edited=\u00a0\u00bbon|phone\u00a0\u00bb border_color_right=\u00a0\u00bb#13a6a4″ global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/cep-experts.ca\/wp-content\/uploads\/2025\/10\/observation-microscopique-de-the-vert.png\u00a0\u00bb alt=\u00a0\u00bbDamaged residential cladding\u00a0\u00bb title_text=\u00a0\u00bbObservation microscopique de the\u0301 vert\u00a0\u00bb admin_label=\u00a0\u00bbImage\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb border_radii=\u00a0\u00bbon|20px|20px|20px|20px\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Figure 1 – Observation microscopique de th\u00e9 vert. <\/strong><\/h5>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbThis is ..as shown in Figure 1.\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font=\u00a0\u00bb||||||||\u00a0\u00bb text_text_color=\u00a0\u00bb#13a6a4″ text_line_height=\u00a0\u00bb1.2em\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Les structures dont la morphologie est tubulaire (fl\u00e8ches) sont des parties d\u2019insectes (setae<\/em>)<\/strong> pr\u00e9sentes lors de la transformation du th\u00e9.<\/p>\n

 <\/p>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2″ _builder_version=\u00a0\u00bb4.20.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb custom_padding=\u00a0\u00bb10px|||3%|false|false\u00a0\u00bb custom_padding_tablet=\u00a0\u00bb0px|||0%|false|false\u00a0\u00bb custom_padding_phone=\u00a0\u00bb|||0%|false|false\u00a0\u00bb custom_padding_last_edited=\u00a0\u00bbon|tablet\u00a0\u00bb border_width_left=\u00a0\u00bb2px\u00a0\u00bb border_color_left=\u00a0\u00bb#00AFAE\u00a0\u00bb border_width_left_tablet=\u00a0\u00bb0px\u00a0\u00bb border_width_left_phone=\u00a0\u00bb0px\u00a0\u00bb border_width_left_last_edited=\u00a0\u00bbon|tablet\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/cep-experts.ca\/wp-content\/uploads\/2025\/10\/observation-microscopique-de-beurre-darachide.jpg\u00a0\u00bb alt=\u00a0\u00bbSurface of a brick veneer (not hail damaged)\u00a0\u00bb title_text=\u00a0\u00bbObservation microscopique de beurre d\u2019arachide\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb border_radii=\u00a0\u00bbon|20px|20px|20px|20px\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Figure 2 – Observation microscopique de beurre d\u2019arachide. <\/strong><\/h5>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbThis is ..as shown in Figure 1.\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font=\u00a0\u00bb||||||||\u00a0\u00bb text_text_color=\u00a0\u00bb#13a6a4″ text_line_height=\u00a0\u00bb1.2em\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Les cristaux blancs visibles un peu partout sur l\u2019image sont des particules de terre ou de sable. <\/strong><\/p>\n

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Fracture d\u2019une pi\u00e8ce<\/strong><\/h3>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb2_5,3_5″ admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb2_5″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/cep-experts.ca\/wp-content\/uploads\/2025\/10\/meb-e1761831681698.jpeg\u00a0\u00bb alt=\u00a0\u00bbSurface of a brick veneer (not hail damaged)\u00a0\u00bb title_text=\u00a0\u00bbMEB\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb max_width=\u00a0\u00bb100%\u00a0\u00bb border_radii=\u00a0\u00bbon|20px|20px|20px|20px\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]
Figure 3 – Microscope \u00e9lectronique \u00e0 balayage <\/strong>(MEB)<\/strong><\/h5>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb3_5″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

L\u2019observation d\u2019une fracture au microscope binoculaire, \u00e0 faible grossissement, permet d\u2019analyser le mode de rupture et de d\u00e9terminer si le bris est soudain ou progressif.<\/p>\n

En compl\u00e9ment, le microscope \u00e9lectronique \u00e0 balayage (MEB)<\/strong> fournit un grossissement plus \u00e9lev\u00e9 et des d\u00e9tails plus pr\u00e9cis sur la nature de la rupture ainsi que sur la pr\u00e9sence de d\u00e9fauts de fabrication (Figure 3)<\/strong>. Coupl\u00e9 \u00e0 un d\u00e9tecteur de spectroscopie \u00e0 dispersion d’\u00e9nergie (EDS)<\/strong>, il permet \u00e9galement d\u2019identifier la pr\u00e9sence d\u2019\u00e9l\u00e9ments corrosifs, comme le chlore, \u00e9l\u00e9ment qui peut avoir contribu\u00e9 \u00e0 la d\u00e9faillance de la pi\u00e8ce.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Contamination par la suie<\/strong><\/h3>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

La pr\u00e9sence de d\u00e9p\u00f4ts noirs sur les surfaces int\u00e9rieures d\u2019un b\u00e2timent peut r\u00e9v\u00e9ler une contamination par la suie. Gr\u00e2ce \u00e0 une m\u00e9thode de pr\u00e9l\u00e8vement appropri\u00e9e, un microscope optique permet de confirmer la pr\u00e9sence de suie et d\u2019analyser sa morphologie afin d\u2019en d\u00e9terminer l\u2019origine. Il est ainsi possible d\u2019identifier si la suie provient d\u2019un voisin, d\u2019un incendie externe (comme un feu d\u2019herbe ou un incendie de for\u00eat), ou de l\u2019usage excessif de chandelles de mauvaise qualit\u00e9. Ce type d\u2019analyse est particuli\u00e8rement utile aux experts en sinistres pour d\u00e9limiter pr\u00e9cis\u00e9ment les zones contamin\u00e9es \u00e0 la suite d\u2019un incendie.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Infiltration d\u2019eau lors du transport de marchandises<\/strong><\/h3>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Dans une \u00e9conomie mondialis\u00e9e, les infiltrations d\u2019eau peuvent causer d\u2019importants dommages mat\u00e9riels. Le microscope \u00e9lectronique \u00e0 balayage, coupl\u00e9 \u00e0 un d\u00e9tecteur EDS, permet d\u2019analyser les dommages par l\u2019eau et d\u2019\u00e9tablir son origine. Par exemple, en analysant des \u00e9chantillons de surface contamin\u00e9s par l\u2019eau il serait possible de d\u00e9terminer si les dommages sont survenus en mer ou durant le transport ferroviaire.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Contamination d\u2019une pi\u00e8ce ou d\u2019un produit<\/strong><\/h3>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

L\u2019analyse chimique d\u2019un contaminant peut \u00eatre effectu\u00e9e \u00e0 l\u2019aide d\u2019un microscope utilisant la lumi\u00e8re infrarouge, plut\u00f4t que la lumi\u00e8re visible. Cette technique permet d\u2019identifier les compos\u00e9s chimiques pr\u00e9sents dans une contamination et ainsi d\u2019en d\u00e9terminer l\u2019origine. Elle est notamment utile dans les cas de rupture de conduites de protection incendie en CPVC, caus\u00e9es par la pr\u00e9sence d\u2019un contaminant interne ou externe, par le contact d\u2019un scellant incompatible ou encore par le contact avec un c\u00e2ble \u00e9lectrique.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Dommages sur un v\u00e9hicule<\/strong><\/h3>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

La combinaison du microscope infrarouge et du microscope \u00e9lectronique permet de d\u00e9terminer si un dommage observ\u00e9 sur un v\u00e9hicule r\u00e9sulte d\u2019un contact avec un autre v\u00e9hicule (gr\u00e2ce \u00e0 l\u2019analyse de transfert de peinture) ou avec une structure fixe, comme un b\u00e2timent. Ce type d\u2019expertise permet aussi de v\u00e9rifier si l\u2019impact r\u00e9sulte d\u2019une tentative de fraude ou d\u2019un v\u00e9ritable accident.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Verre et unit\u00e9s de verre scell\u00e9<\/strong><\/h3>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Enfin, l\u2019utilisation conjointe d\u2019un microscope \u00e0 lumi\u00e8re polaris\u00e9e, d\u2019un microscope infrarouge et d\u2019un microscope \u00e9lectronique permet d\u2019identifier ou de confirmer la cause d\u2019un bris de verre, que ce soit pour les fen\u00eatres d’un b\u00e2timent ou alors un aquarium. Ces techniques permettent aussi de comprendre l\u2019origine d\u2019une bu\u00e9e chimique \u00e0 l\u2019int\u00e9rieur d\u2019une unit\u00e9 de verre scell\u00e9, ou encore la d\u00e9gradation du rev\u00eatement \u00e9nerg\u00e9tique interne. De plus, il est possible de d\u00e9terminer l\u2019origine exacte des rayures sur les panneaux de verre en analysant les d\u00e9p\u00f4ts microscopiques pr\u00e9sents dans les \u00e9gratignures en question.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=\u00a0\u00bbContenu 1 colonne: Intro, titre, photo, paragraphe\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ background_size=\u00a0\u00bbinitial\u00a0\u00bb background_position=\u00a0\u00bbtop_left\u00a0\u00bb background_repeat=\u00a0\u00bbrepeat\u00a0\u00bb width=\u00a0\u00bb100%\u00a0\u00bb custom_padding=\u00a0\u00bb0px||||false|false\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.16″ custom_padding=\u00a0\u00bb|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Conclusion<\/strong><\/h3>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Les diff\u00e9rentes techniques de microscopie et leur combinaison constituent des outils puissants au service de l\u2019expert, lui permettant d\u2019\u00e9tablir l\u2019origine et la cause pr\u00e9cise des dommages observ\u00e9s.<\/p>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbThis is ..as shown in Figure 1.\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font=\u00a0\u00bb||||||||\u00a0\u00bb text_text_color=\u00a0\u00bb#13a6a4″ text_line_height=\u00a0\u00bb1.2em\u00a0\u00bb text_orientation=\u00a0\u00bbjustified\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Vous avez des demandes sp\u00e9ciales pour des observations microscopiques qui vous intriguent? N\u2019h\u00e9sitez pas \u00e0 communiquer avec CEP Forensique!\u00a0<\/a><\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=\u00a0\u00bbCTA Back to articles\u00a0\u00bb _builder_version=\u00a0\u00bb4.23.1″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.20.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_button button_url=\u00a0\u00bb\/fr\/ressources\/articles\/\u00a0\u00bb button_text=\u00a0\u00bbRetour aux articles\u00a0\u00bb _builder_version=\u00a0\u00bb4.27.4″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section]","protected":false},"excerpt":{"rendered":"

Pour les experts en mat\u00e9riaux et en chimie, le microscope constitue un outil incontournable. Cet instrument lui permet, entre autres, de comprendre les m\u00e9canismes de d\u00e9faillance, les caract\u00e9ristiques des mat\u00e9riaux, l\u2019origine de la contamination, ainsi que la nature et le mode de rupture des pi\u00e8ces. En effet, le microscope est g\u00e9n\u00e9ralement le\u00a0premier instrument\u00a0utilis\u00e9 par l\u2019expert pour poser un diagnostic et comprendre le mode de d\u00e9faillance.<\/p>\n","protected":false},"author":30,"featured_media":246985,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-246972","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nLa microscopie, au c\u0153ur de l\u2019analyse des d\u00e9faillances - CEP Forensique<\/title>\n<meta name=\"description\" content=\"Pour les experts en mat\u00e9riaux et en chimie, le microscope constitue un outil incontournable. 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