{"id":5485,"date":"2026-09-07T12:42:27","date_gmt":"2026-09-07T12:42:27","guid":{"rendered":"https:\/\/ultrasuonindt.it\/applications\/mecanique-et-charpente-metallique\/controle-ultrasonore-des-soudures\/"},"modified":"2026-09-17T20:35:43","modified_gmt":"2026-09-17T20:35:43","slug":"controle-ultrasonore-des-soudures","status":"publish","type":"page","link":"https:\/\/ultrasuonindt.it\/fr\/applications\/mecanique-et-charpente-metallique\/controle-ultrasonore-des-soudures\/","title":{"rendered":"Contr\u00f4le ultrasonore des soudures"},"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-full has-custom-border\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1720\" height=\"1200\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?resize=1720%2C1200&#038;ssl=1\" alt=\"D&#xE9;tecteur de d&#xE9;fauts &#xE0; ultrasons Dakota FX71-DL\" class=\"wp-image-265 has-border-color\" 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-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?w=1720&amp;ssl=1 1720w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?resize=300%2C209&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?resize=1024%2C714&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?resize=768%2C536&amp;ssl=1 768w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?resize=1536%2C1072&amp;ssl=1 1536w\" 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=\"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\">Un d\u00e9faut dans un cordon de soudure se trouve <strong>\u00e0 l\u2019int\u00e9rieur du mat\u00e9riau<\/strong> et ne r\u00e9duit pas l\u2019\u00e9paisseur. Pour le trouver, il faut un d\u00e9tecteur de d\u00e9fauts avec palpeurs d\u2019angle, et un op\u00e9rateur qualifi\u00e9 capable d\u2019interpr\u00e9ter l\u2019indication. <\/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\"><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Palpeurs shear wave<\/strong> avec sabots 45\u00b0, 60\u00b0 et 70\u00b0<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Courbe DAC \u00e0 16 points<\/strong> pour \u00e9valuer l\u2019amplitude de l\u2019indication<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> <strong>A-Scan et B-Scan<\/strong> pour localiser et documenter<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> Double mode <strong>d\u00e9fauts + \u00e9paisseur<\/strong> sur le m\u00eame instrument<\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> R\u00e9f\u00e9rences <strong>EN ISO 17640<\/strong> et <strong>EN ISO 11666<\/strong><\/li><li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> Personnel qualifi\u00e9 <strong>EN ISO 9712<\/strong><\/li><\/ul>\n<\/div>\n<\/div>\n\n<div style=\"height:28px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Fissures, inclusions de laitier, manques de fusion et porosit\u00e9s ont un point commun : ils se trouvent \u00e0 l\u2019int\u00e9rieur du joint et ne laissent aucune trace en surface. Un \u00e9paisseurm\u00e8tre, qui envoie le faisceau \u00e0 la verticale et mesure la quantit\u00e9 de mati\u00e8re sous le palpeur, ne les voit pas : la mati\u00e8re est bien l\u00e0, elle n\u2019est simplement pas saine. <\/p>\n\n<p class=\"wp-block-paragraph\">Le contr\u00f4le ultrasonore des soudures fonctionne autrement. Un <strong>palpeur shear wave<\/strong> mont\u00e9 sur un sabot inclin\u00e9 envoie le faisceau en oblique : l\u2019onde entre dans le mat\u00e9riau avec un angle, traverse le cordon et se r\u00e9fl\u00e9chit sur les discontinuit\u00e9s qu\u2019elle rencontre lat\u00e9ralement. En d\u00e9pla\u00e7ant le palpeur d\u2019avant en arri\u00e8re par rapport au cordon, on explore toute l\u2019\u00e9paisseur du joint.  <\/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\">Trouver un \u00e9cho ne suffit cependant pas : il faut d\u00e9cider si cette indication est acceptable. C\u2019est ici qu\u2019intervient la <strong>courbe DAC<\/strong>, construite sur des r\u00e9flecteurs connus \u00e0 des distances croissantes, qui compense l\u2019att\u00e9nuation et permet de comparer des amplitudes relev\u00e9es \u00e0 des profondeurs diff\u00e9rentes. C\u2019est l\u2019\u00e9tape o\u00f9 la qualification de l\u2019op\u00e9rateur p\u00e8se autant que l\u2019instrument.  <\/p>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Ce qu\u2019il faut pour le contr\u00f4le<\/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\">\u00c9l\u00e9ment<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Fonction<\/th><\/tr><\/thead><tbody><tr><td><strong>D\u00e9tecteur de d\u00e9fauts<\/strong><\/td><td>Il g\u00e9n\u00e8re et affiche le signal, g\u00e8re les portes et la DAC<\/td><\/tr><tr><td><strong>Palpeur shear wave avec sabot<\/strong><\/td><td>Il envoie le faisceau en oblique : 45\u00b0, 60\u00b0 ou 70\u00b0 selon l\u2019\u00e9paisseur<\/td><\/tr><tr><td><strong>Bloc de r\u00e9f\u00e9rence<\/strong><\/td><td>Il sert \u00e0 \u00e9talonner l\u2019instrument et \u00e0 construire la DAC<\/td><\/tr><tr><td><strong>Couplant<\/strong><\/td><td>Il assure la transmission entre le sabot et la pi\u00e8ce<\/td><\/tr><tr><td><strong>Proc\u00e9dure \u00e9crite<\/strong><\/td><td>Elle d\u00e9finit les angles, la couverture et les crit\u00e8res d\u2019acceptation<\/td><\/tr><tr><td><strong>Op\u00e9rateur qualifi\u00e9<\/strong><\/td><td>Il interpr\u00e8te l\u2019indication : c\u2019est la partie non automatisable<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Le choix de l\u2019angle<\/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-full has-custom-border\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1500\" height=\"900\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX71-DL_Flaw-Detector_misura_spessore_e_difetti_su_lamiera.jpg?resize=1500%2C900&#038;ssl=1\" alt=\"D&#xE9;tecteur de d&#xE9;fauts Dakota FX71-DL en usage sur t&#xF4;le\" class=\"wp-image-201 has-border-color\" 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_FX71-DL_Flaw-Detector_misura_spessore_e_difetti_su_lamiera.jpg?w=1500&amp;ssl=1 1500w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX71-DL_Flaw-Detector_misura_spessore_e_difetti_su_lamiera.jpg?resize=300%2C180&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX71-DL_Flaw-Detector_misura_spessore_e_difetti_su_lamiera.jpg?resize=1024%2C614&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX71-DL_Flaw-Detector_misura_spessore_e_difetti_su_lamiera.jpg?resize=768%2C461&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\">L\u2019angle du sabot d\u00e9termine le parcours du faisceau dans le joint, et se choisit en fonction de l\u2019\u00e9paisseur et de la g\u00e9om\u00e9trie du cordon.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Les angles <strong>plus grands<\/strong> donnent des parcours plus longs et s\u2019emploient sur les faibles \u00e9paisseurs<\/li><li>Les angles <strong>plus petits<\/strong> p\u00e9n\u00e8trent plus en profondeur et servent sur les fortes \u00e9paisseurs<\/li><li>La proc\u00e9dure prescrit souvent <strong>plusieurs angles<\/strong> sur le m\u00eame joint<\/li><li>Le <strong>V-path<\/strong>, c\u2019est-\u00e0-dire le parcours en zigzag entre les deux surfaces, doit \u00eatre calcul\u00e9 pour savoir o\u00f9 l\u2019on regarde<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Angles et couverture ne s\u2019improvisent pas : ils sont fix\u00e9s par la proc\u00e9dure \u00e9crite selon la norme applicable. Voir aussi les <a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/sondes-et-accessoires\/palpeurs-pour-detecteurs-de-defauts-ultrasonores\/\">transducteurs pour d\u00e9tecteurs de d\u00e9fauts<\/a>. <\/p>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Instruments recommand\u00e9s<\/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\">Instrument<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Pourquoi dans cette application<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/detecteurs-de-defauts\/dakota-fx70-dl-detecteur-de-defauts-ultrasonore-portable\/\"><strong>Dakota FX70-DL \/ FX71-DL<\/strong><\/a><\/td><td>Portable avec A-Scan et B-Scan : le contr\u00f4le sur le terrain et en atelier<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/detecteurs-de-defauts\/dakota-fx81-dl-detecteur-de-defauts-benchtop\/\"><strong>Dakota FX81-DL<\/strong><\/a><\/td><td>Appareil de paillasse \u00e0 grand \u00e9cran, pour laboratoire et r\u00e9ception<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/sondes-et-accessoires\/palpeurs-pour-detecteurs-de-defauts-ultrasonores\/\"><strong>Palpeurs shear wave et sabots<\/strong><\/a><\/td><td>Quick change et standard, angles 45\u00b0, 60\u00b0 et 70\u00b0<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/sondes-et-accessoires\/blocs-detalonnage-pour-epaisseurmetres-a-ultrasons\/\"><strong>Blocs de r\u00e9f\u00e9rence<\/strong><\/a><\/td><td>\u00c9talonnage de l\u2019instrument et construction de la courbe DAC<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Questions fr\u00e9quentes<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757845001000\"><strong class=\"schema-faq-question\">Pourquoi un \u00e9paisseurm\u00e8tre ne sert-il pas pour les soudures ?<\/strong><p class=\"schema-faq-answer\">Parce qu\u2019il envoie le faisceau \u00e0 la verticale et mesure la quantit\u00e9 de mati\u00e8re sous le palpeur. Un d\u00e9faut interne au cordon ne r\u00e9duit pas l\u2019\u00e9paisseur : la mati\u00e8re est bien l\u00e0, mais elle n\u2019est pas saine. Il faut un palpeur d\u2019angle qui traverse le joint en oblique et intercepte la discontinuit\u00e9 lat\u00e9ralement.  <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757845002000\"><strong class=\"schema-faq-question\">\u00c0 quoi sert la courbe DAC ?<\/strong><p class=\"schema-faq-answer\">\u00c0 rendre comparables des indications relev\u00e9es \u00e0 des profondeurs diff\u00e9rentes. L\u2019amplitude d\u2019un \u00e9cho d\u00e9cro\u00eet avec la distance parcourue par le faisceau : le m\u00eame d\u00e9faut donnerait donc des signaux diff\u00e9rents selon sa position. La DAC, construite sur des r\u00e9flecteurs connus \u00e0 des distances croissantes, compense l\u2019att\u00e9nuation et permet d\u2019appliquer les crit\u00e8res d\u2019acceptation.  <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757845003000\"><strong class=\"schema-faq-question\">Faut-il un op\u00e9rateur certifi\u00e9 ?<\/strong><p class=\"schema-faq-answer\">Oui, lorsque le contr\u00f4le vaut r\u00e9ception. Le contr\u00f4le ultrasonore des soudures est une activit\u00e9 END normalis\u00e9e : l\u2019EN ISO 9712 r\u00e9git la qualification et la certification du personnel, et l\u2019\u00e9valuation de l\u2019indication est la part du travail qu\u2019aucun instrument ne peut remplacer. <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Retour \u00e0 <a href=\"https:\/\/ultrasuonindt.it\/fr\/applications\/mecanique-et-charpente-metallique\/\">M\u00e9canique et Charpente m\u00e9tallique<\/a>. Pour le choix du d\u00e9tecteur et des palpeurs, <a href=\"https:\/\/ultrasuonindt.it\/fr\/contacts\/\">\u00e9crivez-nous<\/a> en indiquant les \u00e9paisseurs, le mat\u00e9riau et la norme de r\u00e9ception applicable. <\/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>Un d\u00e9faut dans un cordon de soudure se trouve \u00e0 l\u2019int\u00e9rieur du mat\u00e9riau et ne r\u00e9duit pas l\u2019\u00e9paisseur. Pour le trouver, il faut un d\u00e9tecteur de d\u00e9fauts avec palpeurs d\u2019angle, et un op\u00e9rateur qualifi\u00e9 capable d\u2019interpr\u00e9ter l\u2019indication. \u2713 Palpeurs shear wave avec sabots 45\u00b0, 60\u00b0 et 70\u00b0 \u2713 Courbe DAC \u00e0 16 points pour \u00e9valuer [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":3445,"parent":3209,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"controle ultrasonore soudures","_yoast_wpseo_title":"Contr\u00f4le ultrasonore des soudures | Palpeurs d\u2019angle et DAC","_yoast_wpseo_metadesc":"Contr\u00f4le ultrasonore des joints soud\u00e9s avec palpeurs shear wave, sabots 45-60-70 degr\u00e9s et courbe DAC : r\u00e9f\u00e9rences EN ISO 17640 et EN ISO 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Un d\u00e9faut interne ne r\u00e9duit pas l\u2019\u00e9paisseur : il faut un palpeur d\u2019angle qui traverse le joint en oblique et intercepte la discontinuit\u00e9 lat\u00e9ralement. ","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/fr\/applications\/mecanique-et-charpente-metallique\/controle-ultrasonore-des-soudures\/#faq-question-1757845002000","position":2,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/mecanique-et-charpente-metallique\/controle-ultrasonore-des-soudures\/#faq-question-1757845002000","name":"\u00c0 quoi sert la courbe DAC ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"\u00c0 rendre comparables des indications relev\u00e9es \u00e0 des profondeurs diff\u00e9rentes. 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","inLanguage":"fr-FR"},"inLanguage":"fr-FR"}]}},"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PeHTL3-1qt","jetpack-related-posts":[{"id":3343,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-linspection-des-soudures\/en-iso-17640-le-controle-ultrasonore-manuel-des-assemblages-soudes\/","url_meta":{"origin":5485,"position":0},"title":"EN ISO 17640 : le contr\u00f4le ultrasonore manuel des assemblages soud\u00e9s","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"L'EN ISO 17640 est la norme de technique : elle d\u00e9crit comment s'effectue le contr\u00f4le ultrasonore manuel d'un assemblage soud\u00e9 par fusion et d\u00e9finit quatre niveaux de contr\u00f4le \u00e0 probabilit\u00e9 de d\u00e9tection croissante. \u2713 \u00c9dition de r\u00e9f\u00e9rence : EN ISO 17640:2018 \u2713 Assemblages soud\u00e9s par fusion en mat\u00e9riaux m\u00e9talliques \u2713\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT FX70 Flaw Detector Powerful pour la mesure de d\u00e9fauts et de fissures par ultrasons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-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_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-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_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-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_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-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_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":5436,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/construction-et-infrastructures\/structures-en-acier-et-charpente-lourde\/","url_meta":{"origin":5485,"position":1},"title":"Structures en acier et charpente lourde","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Sur une structure en acier, l\u2019inspection visuelle voit la peinture, pas le m\u00e9tal. Le contr\u00f4le ultrasonore quantifie l\u2019\u00e9paisseur r\u00e9siduelle des profil\u00e9s et v\u00e9rifie les soudures structurelles sans rien d\u00e9monter. \u2713 \u00c9paisseur r\u00e9siduelle mesur\u00e9e sur le peint, sans retirer le rev\u00eatement \u2713 Contr\u00f4le des soudures avec palpeurs d\u2019angle shear wave \u2713\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT CX application de mesure d'\u00e9paisseur par ultrasons sur pi\u00e8ces de charpente m\u00e9tallique","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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":5485,"position":2},"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":[]},{"id":4621,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-linspection-des-soudures\/","url_meta":{"origin":5485,"position":3},"title":"Normes pour l&rsquo;inspection des soudures","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Dans le contr\u00f4le des soudures coexistent deux traditions normatives, l'europ\u00e9enne ISO et l'am\u00e9ricaine AWS et ASME. Savoir laquelle s'applique \u00e0 la commande passe avant toute consid\u00e9ration technique. \u2713 EN ISO 17640 : techniques et niveaux d'essai pour les assemblages soud\u00e9s par fusion \u2713 AWS D1.1 : le code am\u00e9ricain des\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"D\u00e9tecteur de d\u00e9fauts Dakota NDT famille FX en application sur le terrain par ultrasons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&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-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&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-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3209,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/mecanique-et-charpente-metallique\/","url_meta":{"origin":5485,"position":4},"title":"M\u00e9canique et Charpente m\u00e9tallique","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"En atelier m\u00e9canique et charpente m\u00e9tallique, le contr\u00f4le par ultrasons remplit deux missions distinctes : il v\u00e9rifie que la soudure est saine et que le mat\u00e9riau re\u00e7u pr\u00e9sente l'\u00e9paisseur d\u00e9clar\u00e9e par le fournisseur. 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Trois contr\u00f4les distincts : \u00e9paisseur, d\u00e9fauts dans les soudures, tension des assemblages boulonn\u00e9s. \u2713 \u00c9paisseur r\u00e9siduelle des membrures tubulaires\u2713 Contr\u00f4le des n\u0153uds soud\u00e9s avec palpeurs d\u2019angle shear wave\u2713\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT CX application de mesure d'\u00e9paisseur par ultrasons sur pi\u00e8ces de charpente m\u00e9tallique","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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_CX_applicazione_misura_spessore_su_parti_di_carpenteria-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\/5485","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=5485"}],"version-history":[{"count":3,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/5485\/revisions"}],"predecessor-version":[{"id":6466,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/5485\/revisions\/6466"}],"up":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/3209"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media\/3445"}],"wp:attachment":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media?parent=5485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}