{"id":1459,"date":"2022-01-10T02:09:49","date_gmt":"2022-01-10T01:09:49","guid":{"rendered":"https:\/\/mmsurveyor.com\/?p=1459"},"modified":"2022-01-10T02:10:12","modified_gmt":"2022-01-10T01:10:12","slug":"tests-ultrasoniques","status":"publish","type":"post","link":"https:\/\/mmsurveyor.com\/en\/tests-ultrasoniques\/","title":{"rendered":"Tests ultrasoniques"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Section paragraphe&#8221; _builder_version=&#8221;4.0.6&#8243; custom_padding=&#8221;0px|||||&#8221; global_colors_info=&#8221;{}&#8221; locked=&#8221;off&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_row admin_label=&#8221;Ligne Texte avec Titre&#8221; _builder_version=&#8221;4.0.6&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.0.6&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_text admin_label=&#8221;Texte avec titre&#8221; _builder_version=&#8221;4.14.1&#8243; text_font=&#8221;Montserrat||||||||&#8221; text_text_color=&#8221;#0a2756&#8243; header_font=&#8221;Montserrat||||||||&#8221; header_text_color=&#8221;#e5bf20&#8243; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]Des instruments sophistiqu\u00e9s permettent de r\u00e9aliser des tests ultrasoniques, c&#8217;est \u00e0 dire sonder par ultrason les coques m\u00e9talliques construites en aluminium et en acier. D\u2019autres instruments permettent de sonder les coques ou parties structurelles d\u2019un bateau construit en composites. Le principe consiste \u00e0 induire une onde sonore dans le mat\u00e9riau qui va se propager \u00e0 l\u2019int\u00e9rieur de celui-ci. <\/p>\n<p>L\u2019\u00e9cho de ce signal sera capt\u00e9 par l\u2019instrument qui va l\u2019analyser. Si la vitesse de transmission du son dans le mat\u00e9riau test\u00e9 est connu, alors l\u2019instrument sera capable de mesurer la distance entre la surface du mat\u00e9riau et l\u2019origine de son \u00e9cho. Tous ces instruments sophistiqu\u00e9s doivent \u00eatre calibr\u00e9 en fonction du mat\u00e9riau test\u00e9. Par exemple, la vitesse de propagation du son est diff\u00e9rente dans l\u2019acier que dans l\u2019aluminium ou dans un composite comme le carbone\/\u00e9poxy. <\/p>\n<p>Cette m\u00e9thode permet de d\u00e9tecter des fissures dans des soudures, et de tester l\u2019int\u00e9grit\u00e9 structurale d\u2019autres pi\u00e8ces en composites. Elle permet aussi de mesurer l\u2019\u00e9paisseur d\u2019une coque m\u00e9tallique dont l\u2019\u00e2ge avanc\u00e9 peut r\u00e9sulter en des probl\u00e8mes de corrosion. Lors d\u2019une expertise sur une coque en acier, par exemple, on mesure de fa\u00e7on al\u00e9atoire l\u2019\u00e9paisseur du bord\u00e9 en de multiples points sur toute la coque. Si l\u2019\u00e9paisseur mesur\u00e9e a diminu\u00e9e de moins de 20% comparativement \u00e0 l\u2019\u00e9paisseur initiale, on consid\u00e8re la coque encore saine. Toute zone dont l\u2019\u00e9paisseur a diminu\u00e9e de plus de 20% devra \u00eatre r\u00e9par\u00e9e par un bord\u00e9 neuf.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=&#8221;Ligne Image + l\u00e9gende&#8221; _builder_version=&#8221;4.0.6&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.0.6&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_image src=&#8221;https:\/\/mmsurveyor.com\/wp-content\/uploads\/2019\/11\/ultrasonic-e1573552949721.jpg&#8221; show_in_lightbox=&#8221;on&#8221; align=&#8221;center&#8221; admin_label=&#8221;Image standard&#8221; _builder_version=&#8221;4.14.1&#8243; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text admin_label=&#8221;L\u00e9gende&#8221; _builder_version=&#8221;4.0.6&#8243; text_font=&#8221;||on||||||&#8221; text_font_size=&#8221;11px&#8221; text_line_height=&#8221;1em&#8221; custom_margin=&#8221;-4px||0px||false|false&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<p><a href=\"http:\/\/www.virtualengg\/ultrasonic.html\">http:\/\/www.virtualengg\/ultrasonic.html<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thierry Simon nous explique comment fonctionnent les tests ultrasoniques, leurs avantages et inconv\u00e9nients. Un outil tr\u00e8s utile pour l&#8217;expert maritime.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[16,20],"tags":[36,39,38],"class_list":["post-1459","post","type-post","status-publish","format-standard","hentry","category-le-blog-de-lexpert","category-les-outils-de-lexpert-maritime","tag-inspection-en-profondeur","tag-sonder","tag-tests-ultrasoniques"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Thierry Simon nous explique comment fonctionnent les tests ultrasoniques, leurs avantages et inconv\u00e9nients. 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