{"id":4559,"date":"2026-09-07T13:47:51","date_gmt":"2026-09-07T13:47:51","guid":{"rendered":"https:\/\/ultrasuonindt.it\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/"},"modified":"2026-09-30T06:44:24","modified_gmt":"2026-09-30T06:44:24","slug":"materiaux-et-cas-difficiles","status":"publish","type":"page","link":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/","title":{"rendered":"Mat\u00e9riaux et cas difficiles"},"content":{"rendered":"\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:36%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"1200\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_dakota_applicaizoni_misura_spessore_tubi_piccolo_diametro-web-1200x1200-1.webp?resize=1200%2C1200&#038;ssl=1\" alt=\"Mesure ultrasonore sur une g&#xE9;om&#xE9;trie difficile de petit diam&#xE8;tre\" class=\"wp-image-1022\" style=\"border-color:#000000;border-width:1px;border-radius:15px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_dakota_applicaizoni_misura_spessore_tubi_piccolo_diametro-web-1200x1200-1.webp?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_dakota_applicaizoni_misura_spessore_tubi_piccolo_diametro-web-1200x1200-1.webp?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_dakota_applicaizoni_misura_spessore_tubi_piccolo_diametro-web-1200x1200-1.webp?resize=1024%2C1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_dakota_applicaizoni_misura_spessore_tubi_piccolo_diametro-web-1200x1200-1.webp?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_dakota_applicaizoni_misura_spessore_tubi_piccolo_diametro-web-1200x1200-1.webp?resize=768%2C768&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:4%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<div class=\"wp-block-group has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-top-right-radius:6px;border-bottom-right-radius:6px;border-left-color:#225f78;border-left-width:6px;background-color:#ebf1f4;padding-top:24px;padding-right:28px;padding-bottom:24px;padding-left:28px\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#225f78;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.408), 18px);font-style:italic;font-weight:400;line-height:1.6\">Sur de l&rsquo;acier propre, tout le monde mesure. La diff\u00e9rence entre un instrument et l&rsquo;autre se voit sur la fonte, les composites, les surfaces corrod\u00e9es et les parois chaudes : l\u00e0, la faisabilit\u00e9 doit \u00eatre v\u00e9rifi\u00e9e, non d\u00e9clar\u00e9e. <\/p>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\" style=\"list-style:none;padding-left:0px;line-height:1.6\">\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> Haute p\u00e9n\u00e9tration pour les fontes, les composites et les mat\u00e9riaux att\u00e9nuants<\/li>\n\n\n\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> A-Scan pour valider la lecture quand l&rsquo;\u00e9cho est faible<\/li>\n\n\n\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> Sondes dual element pour les surfaces corrod\u00e9es et irr\u00e9guli\u00e8res<\/li>\n\n\n\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> Sondes et couplants d\u00e9di\u00e9s pour les surfaces \u00e0 haute temp\u00e9rature<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\">Chaque mat\u00e9riau oppose aux ultrasons une certaine att\u00e9nuation. Dans l&rsquo;acier, l&rsquo;impulsion voyage avec des pertes modestes et l&rsquo;\u00e9cho de fond revient net ; dans une fonte \u00e0 graphite lamellaire, dans un stratifi\u00e9 en fibres ou dans un caoutchouc charg\u00e9, une bonne partie de l&rsquo;\u00e9nergie se disperse le long du trajet et ce qui revient est un signal faible, parfois indiscernable du bruit de fond. <\/p>\n\n<p class=\"wp-block-paragraph\">La r\u00e9ponse instrumentale est double : abaisser la fr\u00e9quence, parce que les basses fr\u00e9quences p\u00e9n\u00e8trent mieux dans les mat\u00e9riaux att\u00e9nuants, et augmenter l&rsquo;\u00e9nergie d&rsquo;\u00e9mission. C&rsquo;est le principe sur lequel sont construits les instruments dits \u00e0 haute p\u00e9n\u00e9tration, qui sacrifient la r\u00e9solution en \u00e9change de la capacit\u00e9 \u00e0 traverser le mat\u00e9riau. <\/p>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-4066 popmake-739\" style=\"border-width:1px;min-height:250px;aspect-ratio:unset;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"250\" class=\"wp-block-cover__image-background wp-image-727 size-full\" alt=\"\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=1200%2C250&#038;ssl=1\" data-object-fit=\"cover\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=300%2C63&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=1024%2C213&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=768%2C160&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-30 has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-15701bb7 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color is-style-default has-luminous-vivid-amber-color has-text-color has-link-color wp-elements-1 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.374), 35px);\"><strong>Besoin d&rsquo;aide pour choisir le produit adapt\u00e9 ?<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-b507c051 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button popmake-4066 popmake-739\"><a class=\"wp-block-button__link has-ti-accent-color has-cyan-bluish-gray-background-color has-text-color has-background has-link-color wp-element-button\">Contactez-nous<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Un second groupe de difficult\u00e9s ne concerne pas le mat\u00e9riau mais la surface. Une paroi corrod\u00e9e n&rsquo;est plus plane : le couplage devient irr\u00e9gulier et le fond, creus\u00e9 par le pitting, r\u00e9fl\u00e9chit dans des directions diff\u00e9rentes de celle de provenance. Il faut ici des sondes \u00e0 double cristal et la capacit\u00e9 de reconna\u00eetre une lecture non fiable.  <\/p>\n\n<h2 class=\"wp-block-heading\">Les approfondissements de cette section<\/h2>\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Sujet<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">\u00c0 quoi il r\u00e9pond<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/fontes-et-alliages-a-forte-attenuation\/\">Fontes et alliages \u00e0 forte att\u00e9nuation<\/a><\/td><td>Pourquoi la structure du mat\u00e9riau disperse le faisceau<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/composites-et-matieres-plastiques\/\">Composites et mati\u00e8res plastiques<\/a><\/td><td>Basse fr\u00e9quence, haute \u00e9nergie et v\u00e9rification sur \u00e9chantillon<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/surfaces-corrodees-et-piqures\/\">Surfaces corrod\u00e9es et piq\u00fbres<\/a><\/td><td>Comment mesurer l\u00e0 o\u00f9 le fond n&rsquo;est plus plan<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/mesures-a-haute-temperature\/\">Mesures \u00e0 haute temp\u00e9rature<\/a><\/td><td>Limites de la sonde et du couplant, et correction de la lecture<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">La m\u00e9thode : v\u00e9rifier avant, pas apr\u00e8s<\/h2>\n\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:36%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"1200\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?resize=1200%2C1200&#038;ssl=1\" alt=\"Mesure ultrasonore sur la surface corrod&#xE9;e d'un r&#xE9;servoir\" class=\"wp-image-1002\" style=\"border-color:#000000;border-width:1px;border-radius:15px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?resize=1024%2C1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?resize=768%2C768&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:4%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p class=\"wp-block-paragraph\">Sur ces mat\u00e9riaux, aucune fiche technique ne peut garantir \u00e0 l&rsquo;avance que la mesure r\u00e9ussira : composition, charges, porosit\u00e9, temp\u00e9rature et finition modifient le comportement acoustique m\u00eame au sein d&rsquo;une m\u00eame famille. La seule v\u00e9rification fiable est l&rsquo;essai sur un \u00e9chantillon r\u00e9el. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C&rsquo;est la fa\u00e7on dont nous pr\u00e9f\u00e9rons travailler : \u00e9valuer ensemble la faisabilit\u00e9 avant l&rsquo;achat, le mat\u00e9riau en main, au lieu de d\u00e9couvrir une limite quand l&rsquo;instrument est d\u00e9j\u00e0 \u00e0 l&rsquo;atelier. \u00c9crivez-nous depuis la page <a href=\"https:\/\/ultrasuonindt.it\/fr\/contacts\/\">Contact<\/a> en d\u00e9crivant le cas. <\/p>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Questions fr\u00e9quentes<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757267001\"><strong class=\"schema-faq-question\">Pourquoi la lecture n&rsquo;appara\u00eet-elle pas sur certains mat\u00e9riaux ?<\/strong><p class=\"schema-faq-answer\">Parce que le mat\u00e9riau att\u00e9nue fortement les ultrasons et que l&rsquo;\u00e9cho de retour arrive trop faible pour \u00eatre reconnu. Il faut une fr\u00e9quence plus basse et une \u00e9nergie d&rsquo;\u00e9mission plus grande. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757267002\"><strong class=\"schema-faq-question\">Peut-on mesurer sur une surface fortement corrod\u00e9e ?<\/strong><p class=\"schema-faq-answer\">Oui, avec des sondes \u00e0 double cristal et apr\u00e8s avoir \u00e9limin\u00e9 la rouille feuilletante et les d\u00e9p\u00f4ts non adh\u00e9rents. La lecture doit de toute fa\u00e7on \u00eatre valid\u00e9e, car un fond creus\u00e9 r\u00e9fl\u00e9chit de mani\u00e8re irr\u00e9guli\u00e8re. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757267003\"><strong class=\"schema-faq-question\">Comment v\u00e9rifier \u00e0 l&rsquo;avance si la mesure est possible ?<\/strong><p class=\"schema-faq-answer\">En essayant sur un \u00e9chantillon r\u00e9el du mat\u00e9riau, si possible d&rsquo;\u00e9paisseur connue. C&rsquo;est le seul moyen de s&rsquo;assurer que l&rsquo;\u00e9cho est exploitable et d&rsquo;obtenir la vitesse de propagation effective. <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Retour \u00e0 <a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/\">Technologies et Normes END<\/a> ou \u00e9crivez-nous depuis la page <a href=\"https:\/\/ultrasuonindt.it\/fr\/contacts\/\">Contact<\/a>.<\/p>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">Informations compl\u00e9mentaires et contacts <\/h5>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Partenaire division syst\u00e8mes et int\u00e9gration de capteurs : <a href=\"http:\/\/www.roder.it\">www.roder.it<\/a><br\/>Plus d&rsquo;informations sur RODER SRL : <a href=\"https:\/\/ultrasuonindt.it\/chi-siamo\/\">qui sommes-nous<\/a><br\/>Contact pour informations g\u00e9n\u00e9rales : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><br\/>Contact pour informations sur ces produits : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><br\/>Les informations contenues dans cette page web sont fournies \u00e0 titre purement informatif. Bien qu&rsquo;elles aient \u00e9t\u00e9 \u00e9labor\u00e9es avec le plus grand soin, elles ne constituent ni une offre contractuelle ni un engagement contraignant de fourniture. Elles peuvent contenir des erreurs de transcription, de traduction ou des coquilles. Pour des informations pr\u00e9cises et \u00e0 jour, nous vous invitons \u00e0 contacter directement notre soci\u00e9t\u00e9.    <\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Certaines images pr\u00e9sentes sur ce site web ont \u00e9t\u00e9 intentionnellement g\u00e9n\u00e9r\u00e9es \u00e0 l&rsquo;aide de l&rsquo;Intelligence Artificielle (IA). Cela tient au fait que, pour de nombreuses applications et projets, il n&rsquo;est pas possible de divulguer des photographies de l&rsquo;installation ou du syst\u00e8me r\u00e9el en raison d&rsquo;accords de confidentialit\u00e9, de clauses de confidentialit\u00e9 et d&rsquo;accords de non-divulgation (NDA). <\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Sur de l&rsquo;acier propre, tout le monde mesure. La diff\u00e9rence entre un instrument et l&rsquo;autre se voit sur la fonte, les composites, les surfaces corrod\u00e9es et les parois chaudes : l\u00e0, la faisabilit\u00e9 doit \u00eatre v\u00e9rifi\u00e9e, non d\u00e9clar\u00e9e. Chaque mat\u00e9riau oppose aux ultrasons une certaine att\u00e9nuation. Dans l&rsquo;acier, l&rsquo;impulsion voyage avec des pertes modestes et [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":3252,"parent":4449,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"mesure ultrasonore mat\u00e9riaux difficiles","_yoast_wpseo_title":"Mat\u00e9riaux difficiles en mesure par ultrasons | RODER","_yoast_wpseo_metadesc":"Fontes et alliages \u00e0 forte att\u00e9nuation, composites, plastiques, surfaces corrod\u00e9es et mesures \u00e0 haute temp\u00e9rature : quand la mesure ultrasonore devient 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La faisabilit\u00e9 se v\u00e9rifie sur l'\u00e9chantillon. \u2713 Att\u00e9nuation \u00e9lev\u00e9e : basse fr\u00e9quence et \u00e9nergie \u00e9lev\u00e9e \u2713 Vitesse acoustique bien plus faible que dans les m\u00e9taux\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Palpeur \u00e0 ultrasons Dakota NDT haute pr\u00e9cision image applicative pour mesures d\u2019\u00e9paisseur","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-sonda_alta_precisione_per_misure_di_spessore_immagine_applicativa-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3398,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/fontes-et-alliages-a-forte-attenuation\/","url_meta":{"origin":4559,"position":1},"title":"Fontes et alliages \u00e0 forte att\u00e9nuation","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Dans la fonte, le faisceau n'est pas arr\u00eat\u00e9 par un obstacle : il est diffus\u00e9 par la structure m\u00eame du mat\u00e9riau. Le signal qui revient est faible, et il faut le rendre lisible avec une fr\u00e9quence et une \u00e9nergie adapt\u00e9es. \u2713 Fr\u00e9quence basse pour traverser des structures \u00e0 gros grain\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT PMX3-DL application r\u00e9elle de mesure par ultrasons sur pi\u00e8ce m\u00e9canique","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_PMX3-DL_applicazione_reale_di_misura_su_pezzo_meccanico-web-680x680-1.webp?fit=680%2C680&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_PMX3-DL_applicazione_reale_di_misura_su_pezzo_meccanico-web-680x680-1.webp?fit=680%2C680&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_PMX3-DL_applicazione_reale_di_misura_su_pezzo_meccanico-web-680x680-1.webp?fit=680%2C680&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":3524,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/materiaux-et-cas-difficiles\/mesures-a-haute-temperature\/","url_meta":{"origin":4559,"position":2},"title":"Mesures \u00e0 haute temp\u00e9rature","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Sur une installation en marche, la temp\u00e9rature n'est pas seulement une question de tenue des mat\u00e9riaux : elle change aussi la vitesse \u00e0 laquelle l'ultrason traverse la paroi, et donc la valeur lue. \u2713 Transducteur et couplant d\u00e9clar\u00e9s pour la temp\u00e9rature r\u00e9elle \u2713 Couplants avec plage d\u00e9clar\u00e9e de -30 \u00e0\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT CMX10 application de mesure d\u2019\u00e9paisseur par ultrasons sur tubes et r\u00e9servoirs","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-applicazione_cmx10_dettaglio_misura_su_tubi_e_serbatoi-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":5412,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/chimie-pharmacie-et-agroalimentaire\/materiaux-plastiques-et-revetements-internes\/","url_meta":{"origin":4559,"position":3},"title":"Mat\u00e9riaux plastiques et rev\u00eatements internes","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Plastiques et rev\u00eatements posent deux probl\u00e8mes oppos\u00e9s : le mat\u00e9riau att\u00e9nue fortement l\u2019ultrason, et souvent ce qui int\u00e9resse n\u2019est pas l\u2019\u00e9paisseur totale mais celle de la seule couche. 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La mesure sert \u00e0 trouver le point le plus faible, et pour le trouver il faut le chercher. \u2713 Transducteurs double \u00e9l\u00e9ment, tol\u00e9rants aux surfaces irr\u00e9guli\u00e8res \u2713 Mode \u00e9cho-\u00e9cho pour mesurer \u00e0 travers le rev\u00eatement\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT CMX3-DL application de mesure de corrosion par ultrasons sur r\u00e9servoirs et citernes","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CMX3-DL_applicazione_misura_di_corrosione_su_serbatoi_e_cisterne-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":4449,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/","url_meta":{"origin":4559,"position":5},"title":"Technologies et Normes END","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Choisir un instrument, c'est choisir une m\u00e9thode de mesure. Cette section explique comment fonctionne le contr\u00f4le par ultrasons, ce qui distingue un mode de l'autre et quelles normes r\u00e9gissent la mati\u00e8re. \u2713 Les modes de mesure expliqu\u00e9s un par un, avec leur emploi \u2713 D\u00e9tection de d\u00e9fauts : A-Scan, B-Scan,\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Main tenant un palpeur \u00e0 ultrasons Dakota NDT pendant une inspection","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/4559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/users\/157040980"}],"replies":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/comments?post=4559"}],"version-history":[{"count":4,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/4559\/revisions"}],"predecessor-version":[{"id":7319,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/4559\/revisions\/7319"}],"up":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/4449"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media\/3252"}],"wp:attachment":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media?parent=4559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}