{"id":5104,"date":"2026-09-07T14:44:18","date_gmt":"2026-09-07T14:44:18","guid":{"rendered":"https:\/\/ultrasuonindt.it\/technologies-et-normes-end\/tension-des-boulons-par-ultrasons\/mesure-de-lallongement-elastique\/"},"modified":"2026-10-01T18:42:01","modified_gmt":"2026-10-01T18:42:01","slug":"mesure-de-lallongement-elastique","status":"publish","type":"page","link":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/tension-des-boulons-par-ultrasons\/mesure-de-lallongement-elastique\/","title":{"rendered":"Mesure de l&rsquo;allongement \u00e9lastique"},"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=\"700\" height=\"700\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?resize=700%2C700&#038;ssl=1\" alt=\"Mesure par ultrasons de l&apos;allongement d&apos;un boulon\" class=\"wp-image-997\" 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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?resize=150%2C150&amp;ssl=1 150w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/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\">Un boulon tendu se comporte comme un ressort : il s&rsquo;allonge proportionnellement \u00e0 la charge. Mesurer cet allongement, c&rsquo;est mesurer la charge, sans devoir la d\u00e9duire du couple. <\/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=\"padding-left:0px;line-height:1.6\">\n<li><strong style=\"color:#225f78\">\u2713<\/strong> Relation \u00e9lastique entre allongement et charge appliqu\u00e9e<\/li>\n\n\n\n<li><strong style=\"color:#225f78\">\u2713<\/strong> Le temps de vol augmente avec la longueur du boulon<\/li>\n\n\n\n<li><strong style=\"color:#225f78\">\u2713<\/strong> Lecture de r\u00e9f\u00e9rence sur boulon non charg\u00e9 indispensable<\/li>\n\n\n\n<li><strong style=\"color:#225f78\">\u2713<\/strong> Validit\u00e9 limit\u00e9e au domaine \u00e9lastique du mat\u00e9riau<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\">Le principe est celui du comportement \u00e9lastique. Tant que le mat\u00e9riau reste dans son domaine \u00e9lastique, l&rsquo;allongement qu&rsquo;il subit est proportionnel \u00e0 la force qui le tend : en doublant la charge, l&rsquo;allongement double, et en retirant la charge, le boulon revient \u00e0 sa longueur initiale. <\/p>\n\n<p class=\"wp-block-paragraph\">La m\u00e9thode ultrasonore mesure cet allongement sans y toucher. Un transducteur pos\u00e9 sur la t\u00eate envoie une impulsion le long de l&rsquo;axe de la tige, qui se r\u00e9fl\u00e9chit sur l&rsquo;extr\u00e9mit\u00e9 oppos\u00e9e et revient : le temps de vol d\u00e9pend de la longueur parcourue, il augmente donc quand le boulon s&rsquo;allonge. <\/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\">En comparant le temps de vol sur boulon non charg\u00e9 avec celui apr\u00e8s serrage, on obtient l&rsquo;allongement. \u00c0 partir de l\u00e0, en connaissant la g\u00e9om\u00e9trie du boulon et les caract\u00e9ristiques du mat\u00e9riau, on remonte \u00e0 la charge appliqu\u00e9e. C&rsquo;est la raison pour laquelle la lecture initiale, celle sur boulon non serr\u00e9, est la condition sans laquelle la m\u00e9thode ne fonctionne pas.  <\/p>\n\n<h2 class=\"wp-block-heading\">Ce qu&rsquo;il faut conna\u00eetre<\/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\">Donn\u00e9e<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">\u00c0 quoi elle sert<\/th><\/tr><\/thead><tbody><tr><td>Lecture sur boulon non charg\u00e9<\/td><td>C&rsquo;est la r\u00e9f\u00e9rence \u00e0 partir de laquelle on obtient l&rsquo;allongement<\/td><\/tr><tr><td>Longueur de serrage<\/td><td>La partie du boulon qui s&rsquo;allonge effectivement<\/td><\/tr><tr><td>Section r\u00e9sistante<\/td><td>Convertit l&rsquo;allongement en charge appliqu\u00e9e<\/td><\/tr><tr><td>Mat\u00e9riau du boulon<\/td><td>D\u00e9termine le comportement \u00e9lastique et la vitesse acoustique<\/td><\/tr><tr><td>Temp\u00e9rature<\/td><td>Doit \u00eatre compens\u00e9e car elle alt\u00e8re le temps de vol<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">Les limites de la m\u00e9thode<\/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-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?resize=1200%2C1200&#038;ssl=1\" alt=\"Transducteur pos\u00e9 sur la t\u00eate d&apos;un \u00e9l\u00e9ment filet\u00e9\" class=\"wp-image-982\" 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-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-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-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-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-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-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-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-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-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-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\">La premi\u00e8re limite est la proportionnalit\u00e9 : elle vaut dans le domaine \u00e9lastique. Un boulon port\u00e9 au-del\u00e0 de la limite d&rsquo;\u00e9lasticit\u00e9 ne revient pas \u00e0 sa longueur initiale, et la relation entre allongement et charge n&rsquo;est plus celle sur laquelle le calcul se fonde. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La deuxi\u00e8me est l&rsquo;acc\u00e8s : il faut une extr\u00e9mit\u00e9 accessible, avec une surface plane et propre sur laquelle poser le transducteur. La troisi\u00e8me est la temp\u00e9rature, qui intervient \u00e0 la fois en dilatant le mat\u00e9riau et en modifiant sa vitesse acoustique : c&rsquo;est la raison de la <a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/tension-des-boulons-par-ultrasons\/compensation-thermique-automatique\/\">compensation thermique<\/a>. <\/p>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Appareils de mesure<\/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\">Appareil<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Emploi typique<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/moniteurs-de-tension-de-boulons\/dakota-bt1-dl-moniteur-de-tension-de-boulons-portable\/\">Dakota BT1-DL MiniMax<\/a><\/td><td>Contr\u00f4le du serrage en atelier, avec datalogger<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/moniteurs-de-tension-de-boulons\/dakota-bt2-dl-moniteur-de-tension-de-boulons-de-table\/\">Dakota BT2-DL Max II<\/a><\/td><td>Version de table multicanaux<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/moniteurs-de-tension-de-boulons\/dakota-multimax-surveillance-a-distance-de-la-tension-des-boulons-4-voies\/\">Dakota MultiMax<\/a><\/td><td>Surveillance continue \u00e0 quatre canaux<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/logiciels-et-applications\/dakmaster-gestion-des-donnees-et-rapports\/\">DakMaster\u2122<\/a><\/td><td>Analyse des lectures et rapport de montage<\/td><\/tr><\/tbody><\/table><\/figure>\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-1757296001\"><strong class=\"schema-faq-question\">Pourquoi le temps de vol augmente-t-il quand le boulon se tend ?<\/strong><p class=\"schema-faq-answer\">Parce que le boulon s&rsquo;allonge : l&rsquo;impulsion doit parcourir une distance plus grande pour atteindre l&rsquo;extr\u00e9mit\u00e9 oppos\u00e9e et revenir, elle met donc plus de temps.<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757296002\"><strong class=\"schema-faq-question\">La m\u00e9thode vaut-elle aussi au-del\u00e0 de la limite d&rsquo;\u00e9lasticit\u00e9 ?<\/strong><p class=\"schema-faq-answer\">Non. La proportionnalit\u00e9 entre allongement et charge vaut dans le domaine \u00e9lastique du mat\u00e9riau : au-del\u00e0 de la limite d&rsquo;\u00e9lasticit\u00e9, la relation sur laquelle se fonde le calcul n&rsquo;est plus valable. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757296003\"><strong class=\"schema-faq-question\">Que se passe-t-il sans la lecture initiale ?<\/strong><p class=\"schema-faq-answer\">On ne peut pas obtenir l&rsquo;allongement, car le terme de comparaison manque. La seule lecture apr\u00e8s serrage ne fournit aucune information sur la charge appliqu\u00e9e. <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Retour \u00e0 <a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/tension-des-boulons-par-ultrasons\/\">Tension des boulons par ultrasons<\/a> ou \u00e9crivez-nous depuis la page <a href=\"https:\/\/ultrasuonindt.it\/fr\/contacts\/\">Contacts<\/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>Un boulon tendu se comporte comme un ressort : il s&rsquo;allonge proportionnellement \u00e0 la charge. Mesurer cet allongement, c&rsquo;est mesurer la charge, sans devoir la d\u00e9duire du couple. Le principe est celui du comportement \u00e9lastique. Tant que le mat\u00e9riau reste dans son domaine \u00e9lastique, l&rsquo;allongement qu&rsquo;il subit est proportionnel \u00e0 la force qui le tend [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":3165,"parent":4514,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"mesure allongement \u00e9lastique boulon","_yoast_wpseo_title":"Mesure de l'allongement \u00e9lastique | Dakota NDT","_yoast_wpseo_metadesc":"Comment l'allongement d'un boulon devient charge appliqu\u00e9e : relation \u00e9lastique, temps de vol, lecture de r\u00e9f\u00e9rence sur boulon non charg\u00e9 et limites.","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":""},"class_list":["post-5104","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mesure de l&#039;allongement \u00e9lastique | Dakota NDT<\/title>\n<meta name=\"description\" content=\"Comment l&#039;allongement d&#039;un boulon devient charge appliqu\u00e9e : relation \u00e9lastique, temps de vol, lecture de r\u00e9f\u00e9rence sur boulon non charg\u00e9 et limites.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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En mesurant de combien il s'est allong\u00e9, on conna\u00eet la charge qu'il exerce : une grandeur que la cl\u00e9 dynamom\u00e9trique ne peut qu'estimer. \u2713 Mesure de la charge effective, pas du couple appliqu\u00e9 \u2713 Compensation automatique de la temp\u00e9rature \u2713 Recontr\u00f4le du\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor application mesure allongement des boulons par ultrasons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":3164,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/energie-et-energies-renouvelables\/","url_meta":{"origin":5104,"position":1},"title":"\u00c9nergie et \u00c9nergies renouvelables","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Dans le secteur de l'\u00e9nergie, deux contr\u00f4les d\u00e9terminent la disponibilit\u00e9 de l'installation : la charge r\u00e9elle des boulons dans les assemblages structuraux et l'\u00e9paisseur r\u00e9siduelle des tuyauteries et des g\u00e9n\u00e9rateurs de vapeur. Les deux s'effectuent par m\u00e9thode ultrasonore, les deux dans des fen\u00eatres d'arr\u00eat tr\u00e8s serr\u00e9es. \u2713 Mesure de la\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor application mesure allongement des boulons par ultrasons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":6052,"url":"https:\/\/ultrasuonindt.it\/fr\/produits\/sondes-et-accessoires\/palpeurs-pour-moniteurs-de-tension-de-boulons\/","url_meta":{"origin":5104,"position":2},"title":"Palpeurs pour moniteurs de tension de boulons","author":"GSM","date":"6 mai 2026","format":false,"excerpt":"Les transducteurs Dakota pour moniteurs de tension de boulons : palpeurs d\u00e9di\u00e9s \u00e0 la mesure par ultrasons de l'allongement \u00e9lastique des fixations filet\u00e9es. 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La mesure ultrasonore de l\u2019allongement restitue la grandeur qui compte vraiment. \u2713 Mesure de la charge r\u00e9elle, non du couple appliqu\u00e9\u2713 V\u00e9rification de l\u2019uniformit\u00e9 du serrage sur toute la couronne\u2713 Recontr\u00f4le dans le\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor application mesure allongement des boulons par ultrasons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":5387,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/automobile-et-motorsport\/serrage-controle-dorganes-critiques\/","url_meta":{"origin":5104,"position":4},"title":"Serrage contr\u00f4l\u00e9 d\u2019organes critiques","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Sur les bielles, les culasses et les organes de transmission, le couple appliqu\u00e9 ne dit pas ce que le boulon tire r\u00e9ellement : le frottement et l\u2019\u00e9tat de surface en absorbent une part variable. 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La cl\u00e9 mesure l'effort n\u00e9cessaire pour tourner l'\u00e9crou ; la m\u00e9thode ultrasonore mesure de combien le boulon s'est tendu. Entre les deux s'interpose le frottement. \u2713 La cl\u00e9 dynamom\u00e9trique mesure un couple, pas une charge \u2713 Le frottement absorbe\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor application mesure allongement des boulons par ultrasons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&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_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/5104","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=5104"}],"version-history":[{"count":5,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/5104\/revisions"}],"predecessor-version":[{"id":8410,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/5104\/revisions\/8410"}],"up":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/4514"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media\/3165"}],"wp:attachment":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media?parent=5104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}