{"id":5468,"date":"2026-09-07T12:34:03","date_gmt":"2026-09-07T12:34:03","guid":{"rendered":"https:\/\/ultrasuonindt.it\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/"},"modified":"2026-10-01T18:38:12","modified_gmt":"2026-10-01T18:38:12","slug":"bolt-tension-in-wind-turbines","status":"publish","type":"page","link":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/","title":{"rendered":"Bolt tension in wind turbines"},"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=\"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=\"Dakota bolt tension monitor for ultrasonic measurement of the elongation\" class=\"wp-image-997 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_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=\"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\">The connections of a wind tower work under <strong>permanent cyclic load<\/strong>. Torque tightening leaves an uncertainty that time amplifies; measuring the elongation says how hard each bolt is really pulling. <\/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\"><li><strong style=\"color:#225f78\">\u2713<\/strong> Measurement of the <strong>actual load<\/strong>, not of the torque applied<\/li><li><strong style=\"color:#225f78\">\u2713<\/strong> Check of <strong>uniformity<\/strong> across the whole flange ring<\/li><li><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Periodic re-checking<\/strong> of the same bolt over time<\/li><li><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Continuous monitoring<\/strong>, remote, with the 4-channel MultiMax<\/li><li><strong style=\"color:#225f78\">\u2713<\/strong> <strong>Automatic temperature compensation<\/strong><\/li><li><strong style=\"color:#225f78\">\u2713<\/strong> Portable instrument for <strong>work in the nacelle and in the tower<\/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\">A wind turbine transmits to the ground, through a handful of bolted connections, all the load the rotor gathers from the wind. The flanges joining the tower sections, the connection to the foundation and the ring at the blade root are the points where that force concentrates, and they are also the points where insufficient or uneven tightening turns into a structural problem. <\/p>\n\n<p class=\"wp-block-paragraph\">The difficulty is that torque tightening does not say what load was actually applied: much of the torque is consumed in friction, and the useful share varies with lubrication and with the condition of the thread. On a ring of dozens of bolts this produces an uneven distribution that no torque check can capture, because reapplying the wrench to an already tightened bolt says very little. <\/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>Need help choosing the right product?<\/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\">Contact us<\/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\">Ultrasonic measurement of the elongation returns the load directly. And since the reference length stays stored, the same bolt can be re-checked months later to see whether the load has dropped: it is the way to detect a loosening in service before it becomes visible by any other means. <\/p>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">The connections to keep under watch<\/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\">Connection<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Why it is critical<\/th><\/tr><\/thead><tbody><tr><td><strong>Connection to the foundation<\/strong><\/td><td>It transfers the entire load of the machine to the ground<\/td><\/tr><tr><td><strong>Flanges between tower sections<\/strong><\/td><td>Numerous rings, stressed in cyclic bending<\/td><\/tr><tr><td><strong>Blade root and bearing<\/strong><\/td><td>Rotating and variable load, difficult access<\/td><\/tr><tr><td><strong>Nacelle connection<\/strong><\/td><td>It carries large masses at height<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Periodic checking or continuous monitoring<\/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=\"960\" height=\"960\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX-applicazione_di_misura_ad_ultrasuoni_con_trasmissione_dati_wireless-web-960x960-1.webp?resize=960%2C960&#038;ssl=1\" alt=\"Ultrasonic measurement with remote data transmission\" class=\"wp-image-1021 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_CX-applicazione_di_misura_ad_ultrasuoni_con_trasmissione_dati_wireless-web-960x960-1.webp?w=960&amp;ssl=1 960w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX-applicazione_di_misura_ad_ultrasuoni_con_trasmissione_dati_wireless-web-960x960-1.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_CX-applicazione_di_misura_ad_ultrasuoni_con_trasmissione_dati_wireless-web-960x960-1.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_CX-applicazione_di_misura_ad_ultrasuoni_con_trasmissione_dati_wireless-web-960x960-1.webp?resize=768%2C768&amp;ssl=1 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/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\">On a machine up in the air, every climb costs. Hence the difference between the two possible strategies. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Periodic checking<\/strong> with the portable BT1-DL is done during scheduled maintenance, bolt by bolt<\/li><li><strong>Continuous monitoring<\/strong> with the MultiMax leaves the sensors installed and reads remotely, without climbing<\/li><li>The MultiMax handles <strong>4 multiplexed channels<\/strong> and the modules stack to follow more bolts<\/li><li><strong>Automatic temperature compensation<\/strong> is essential on an exposed structure<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The MultiMax has no on-board controls: it is configured and read through the <a href=\"https:\/\/ultrasuonindt.it\/en\/products\/software-and-apps\/multiui-interface-for-the-dakota-multimax\/\">MultiUI<\/a> software.<\/p>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Recommended instruments<\/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\">Why in this application<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/ultrasuonindt.it\/en\/products\/bolt-tension-monitors\/dakota-bt1-dl-portable-bolt-tension-monitor\/\"><strong>Dakota BT1-DL MiniMax<\/strong><\/a><\/td><td>Portable with data logger: the check at height, during maintenance<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/en\/products\/bolt-tension-monitors\/dakota-multimax-remote-bolt-tension-monitoring-4-channels\/\"><strong>Dakota MultiMax<\/strong><\/a><\/td><td>Continuous remote monitoring, 4 channels and stackable modules<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/en\/products\/bolt-tension-monitors\/dakota-bt2-dl-benchtop-bolt-tension-monitor\/\"><strong>Dakota BT2-DL Max II<\/strong><\/a><\/td><td>Multi-channel benchtop for the preparation and calibration of the bolts<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/en\/products\/probes-and-accessories\/transducers-for-bolt-tension-monitors\/\"><strong>Bolt tension transducers<\/strong><\/a><\/td><td>Probes dedicated to the measurement of the elongation<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\" style=\"color:#225f78\">Frequently asked questions<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757839001000\"><strong class=\"schema-faq-question\">Can the load be checked without loosening the bolts?<\/strong><p class=\"schema-faq-answer\">Yes, and that is why the method is used in this sector. Ultrasonic measurement reads the elongation of the bolt in the state it is in, without touching the tightening. If the reference length with the bolt unloaded is known, the value read gives the load directly.  <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757839002000\"><strong class=\"schema-faq-question\">Does remote monitoring avoid climbing the tower?<\/strong><p class=\"schema-faq-answer\">It cuts the climbs devoted to checking the tightening, not every maintenance activity. With the MultiMax the sensors stay installed on the monitored connections and the readings are taken remotely through MultiUI: the climb is for installation and for the work itself, not for reading a value. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757839003000\"><strong class=\"schema-faq-question\">Does temperature affect the measurement?<\/strong><p class=\"schema-faq-answer\">Yes: the speed of sound in steel varies with temperature, and on an exposed structure the swings are wide. Without correction the thermal variation would be read as a variation in load. The MultiMax has automatic compensation built in for exactly this reason.  <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Back to <a href=\"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/\">Energy and Renewables<\/a>. For tightening control on your wind farm, <a href=\"https:\/\/ultrasuonindt.it\/en\/contact\/\">write to us<\/a> giving the type of connection, the bolt diameter and whether you prefer periodic checking or continuous monitoring. <\/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\">Further information and contacts <\/h5>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><a href=\"http:\/\/www.roder.it\">Systems division and sensor integration partner : www.roder.it<\/a><br\/><a href=\"https:\/\/ultrasuonindt.it\/chi-siamo\/\">More information about RODER SRL : about us<\/a><br\/>Contact for general information : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><br\/>Contact for information about these products : <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\/>The information contained on this web page is provided for information purposes only. Although it has been compiled with the utmost care, it does not constitute a contractual offer or a binding commitment to supply. It may contain transcription, translation or typographical errors. For precise and up-to-date information, please contact our company directly.    <\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Some images on this website have been intentionally generated using Artificial Intelligence (AI). This is because, for many applications and projects, it is not possible to disclose photographs of the installation or of the actual system due to confidentiality agreements, confidentiality clauses and non-disclosure agreements (NDAs). <\/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>The connections of a wind tower work under permanent cyclic load. Torque tightening leaves an uncertainty that time amplifies; measuring the elongation says how hard each bolt is really pulling. \u2713 Measurement of the actual load, not of the torque applied \u2713 Check of uniformity across the whole flange ring \u2713 Periodic re-checking of the [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":2763,"parent":3159,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"wind tower bolt tension","_yoast_wpseo_title":"Ultrasonic bolt tension on wind turbines | RODER","_yoast_wpseo_metadesc":"Measurement of bolt load in tower connections, section flanges and blade root: real load, re-checking over time and remote monitoring.","_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-5468","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ultrasonic bolt tension on wind turbines | RODER<\/title>\n<meta name=\"description\" content=\"Measurement of bolt load in tower connections, section flanges and blade root: real load, re-checking over time and remote monitoring.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ultrasonic bolt tension on wind turbines | RODER\" \/>\n<meta property=\"og:description\" content=\"Measurement of bolt load in tower connections, section flanges and blade root: real load, re-checking over time and remote monitoring.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/\" \/>\n<meta property=\"og:site_name\" content=\"ULTRASUONI NDT\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-01T18:38:12+00:00\" \/>\n<meta property=\"og:image\" content=\"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\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"700\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/\",\"url\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/\",\"name\":\"Ultrasonic bolt tension on wind turbines | RODER\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#primaryimage\"},\"thumbnailUrl\":\"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\",\"datePublished\":\"2026-09-07T12:34:03+00:00\",\"dateModified\":\"2026-10-01T18:38:12+00:00\",\"description\":\"Measurement of bolt load in tower connections, section flanges and blade root: real load, re-checking over time and remote monitoring.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839001000\"},{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839002000\"},{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839003000\"}],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#primaryimage\",\"url\":\"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\",\"contentUrl\":\"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\",\"width\":700,\"height\":700,\"caption\":\"Dakota NDT BT Bolt Tension Monitor ultrasonic bolt elongation measurement application\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Applications\",\"item\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Energy and Renewables\",\"item\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Bolt tension in wind turbines\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/\",\"name\":\"ULTRASUONI NDT\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/#organization\",\"name\":\"RODER SRL\",\"url\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/ultrasuonindt.it\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/logo_ultrasuoni_ndt.png?fit=1000%2C330&ssl=1\",\"contentUrl\":\"https:\\\/\\\/i0.wp.com\\\/ultrasuonindt.it\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/logo_ultrasuoni_ndt.png?fit=1000%2C330&ssl=1\",\"width\":1000,\"height\":330,\"caption\":\"RODER SRL\"},\"image\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/roder-srl\"]},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839001000\",\"position\":1,\"url\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839001000\",\"name\":\"Can the load be checked without loosening the bolts?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes: ultrasonic measurement reads the elongation of the bolt in the state it is in, without touching the tightening. With the reference length known, the value read gives the load directly. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839002000\",\"position\":2,\"url\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839002000\",\"name\":\"Does remote monitoring avoid climbing the tower?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It cuts the climbs devoted to checking the tightening. With the MultiMax the sensors stay installed and the readings are taken remotely through MultiUI: the climb is for installation and for the work itself, not for reading a value. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839003000\",\"position\":3,\"url\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/applications\\\/energy-and-renewables\\\/bolt-tension-in-wind-turbines\\\/#faq-question-1757839003000\",\"name\":\"Does temperature affect the measurement?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes: the speed of sound in steel varies with temperature and on an exposed structure the swings are wide. Without correction the thermal variation would be read as a variation in load; the MultiMax has automatic compensation built in. \",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ultrasonic bolt tension on wind turbines | RODER","description":"Measurement of bolt load in tower connections, section flanges and blade root: real load, re-checking over time and remote monitoring.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/","og_locale":"en_US","og_type":"article","og_title":"Ultrasonic bolt tension on wind turbines | RODER","og_description":"Measurement of bolt load in tower connections, section flanges and blade root: real load, re-checking over time and remote monitoring.","og_url":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/","og_site_name":"ULTRASUONI NDT","article_modified_time":"2026-10-01T18:38:12+00:00","og_image":[{"width":700,"height":700,"url":"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","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["WebPage","FAQPage"],"@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/","url":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/","name":"Ultrasonic bolt tension on wind turbines | RODER","isPartOf":{"@id":"https:\/\/ultrasuonindt.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#primaryimage"},"image":{"@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#primaryimage"},"thumbnailUrl":"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","datePublished":"2026-09-07T12:34:03+00:00","dateModified":"2026-10-01T18:38:12+00:00","description":"Measurement of bolt load in tower connections, section flanges and blade root: real load, re-checking over time and remote monitoring.","breadcrumb":{"@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839001000"},{"@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839002000"},{"@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839003000"}],"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#primaryimage","url":"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","contentUrl":"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","width":700,"height":700,"caption":"Dakota NDT BT Bolt Tension Monitor ultrasonic bolt elongation measurement application"},{"@type":"BreadcrumbList","@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ultrasuonindt.it\/en\/"},{"@type":"ListItem","position":2,"name":"Applications","item":"https:\/\/ultrasuonindt.it\/en\/applications\/"},{"@type":"ListItem","position":3,"name":"Energy and Renewables","item":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/"},{"@type":"ListItem","position":4,"name":"Bolt tension in wind turbines"}]},{"@type":"WebSite","@id":"https:\/\/ultrasuonindt.it\/en\/#website","url":"https:\/\/ultrasuonindt.it\/en\/","name":"ULTRASUONI NDT","description":"","publisher":{"@id":"https:\/\/ultrasuonindt.it\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ultrasuonindt.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/ultrasuonindt.it\/en\/#organization","name":"RODER SRL","url":"https:\/\/ultrasuonindt.it\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ultrasuonindt.it\/en\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/logo_ultrasuoni_ndt.png?fit=1000%2C330&ssl=1","contentUrl":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/logo_ultrasuoni_ndt.png?fit=1000%2C330&ssl=1","width":1000,"height":330,"caption":"RODER SRL"},"image":{"@id":"https:\/\/ultrasuonindt.it\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/roder-srl"]},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839001000","position":1,"url":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839001000","name":"Can the load be checked without loosening the bolts?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes: ultrasonic measurement reads the elongation of the bolt in the state it is in, without touching the tightening. With the reference length known, the value read gives the load directly. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839002000","position":2,"url":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839002000","name":"Does remote monitoring avoid climbing the tower?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It cuts the climbs devoted to checking the tightening. With the MultiMax the sensors stay installed and the readings are taken remotely through MultiUI: the climb is for installation and for the work itself, not for reading a value. ","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839003000","position":3,"url":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/bolt-tension-in-wind-turbines\/#faq-question-1757839003000","name":"Does temperature affect the measurement?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes: the speed of sound in steel varies with temperature and on an exposed structure the swings are wide. Without correction the thermal variation would be read as a variation in load; the MultiMax has automatic compensation built in. ","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PeHTL3-1qc","jetpack-related-posts":[{"id":3625,"url":"https:\/\/ultrasuonindt.it\/en\/products\/bolt-tension-monitors\/dakota-bt1-dl-portable-bolt-tension-monitor\/","url_meta":{"origin":5468,"position":0},"title":"Dakota BT1-DL \u2013 Portable Bolt Tension Monitor","author":"GSM","date":"16 April 2026","format":false,"excerpt":"The Dakota BT1-DL MiniMax is the ultrasonic bolt tension monitor, portable, for elongation measurement and applied load. Built-in data logger and automatic calibration for tightening control. Portable : Tension measurement in the field Elongation measurement: Precise ultrasonic technique Built-in data logger : Tightening history memory Automatic calibration: On bolt length\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT BT1-DL MiniMax portable ultrasonic bolt tension monitor","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt1-dl_misura_tensione_elongazione_bulloni_e_tiranti-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_bt1-dl_misura_tensione_elongazione_bulloni_e_tiranti-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_bt1-dl_misura_tensione_elongazione_bulloni_e_tiranti-web-680x680-1.webp?fit=680%2C680&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":2983,"url":"https:\/\/ultrasuonindt.it\/en\/products\/bolt-tension-monitors\/","url_meta":{"origin":5468,"position":1},"title":"Bolt Tension Monitors","author":"GSM","date":"16 April 2026","format":false,"excerpt":"BT Series \u2014 Bolt Tension Monitors Portable for field use Dakota BT1-DL MiniMax \u2014 Portable The portable model of the range, for field inspections and periodic monitoring of bolts on in-service plant. Part Number Z-156-0008 (designation MiniMax) Weight 383 g, 3 AA batteries with up to 35 hours of operation,\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor hero image of the ultrasonic family","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_dakota-bt-Bolt-Tension-Monitor_immagine_hero_per_rappresentazione_famiglia-web-387x387-1.webp?fit=387%2C387&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":6043,"url":"https:\/\/ultrasuonindt.it\/en\/products\/probes-and-accessories\/transducers-for-bolt-tension-monitors\/","url_meta":{"origin":5468,"position":2},"title":"Transducers for Bolt Tension Monitors","author":"GSM","date":"6 May 2026","format":false,"excerpt":"Dakota transducers for bolt tension monitors: dedicated probes for the ultrasonic measurement of the elastic elongation of threaded fasteners. Compatible with the Dakota BT1-DL and BT2-DL.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT transducers for bolt tension monitors, ultrasonic measurement of the elastic elongation of fasteners","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/05\/dakota_ndt-trasduttori_per_monitor_tensione_bulloni-web-387x387-1.webp?fit=387%2C387&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":8378,"url":"https:\/\/ultrasuonindt.it\/en\/products\/bolt-tension-monitors\/dakota-multimax-remote-bolt-tension-monitoring-4-channels\/","url_meta":{"origin":5468,"position":3},"title":"Dakota MultiMax \u2013 Remote bolt tension monitoring, 4 channels","author":"GSM","date":"7 September 2026","format":false,"excerpt":"The Dakota MultiMax is a 4-channel bolt tension monitor that measures elongation by the ultrasonic method continuously and remotely, with automatic temperature compensation, for joints that have to stay under control over time. \u2713 4 channels multiplexed, stackable modules to monitor several bolts\u2713 Measuring range 25.4 mm \u2013 15.2 m,\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"dakota multimax 4-channel instrument for measuring bolt elongation during tightening","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/09\/dakota_ndt-multimax-strumento_multimax_monitor_tensione_bulloni_4_canali_con_trasduttori-web_image-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\/09\/dakota_ndt-multimax-strumento_multimax_monitor_tensione_bulloni_4_canali_con_trasduttori-web_image-680x680-1.webp?fit=680%2C680&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/09\/dakota_ndt-multimax-strumento_multimax_monitor_tensione_bulloni_4_canali_con_trasduttori-web_image-680x680-1.webp?fit=680%2C680&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":4351,"url":"https:\/\/ultrasuonindt.it\/en\/products\/bolt-tension-monitors\/dakota-bt2-dl-benchtop-bolt-tension-monitor\/","url_meta":{"origin":5468,"position":4},"title":"Dakota BT2-DL \u2013 Benchtop Bolt Tension Monitor","author":"GSM","date":"16 April 2026","format":false,"excerpt":"The Dakota BT2-DL Max II is the ultrasonic bolt tension monitor in benchtop version with extended data logger and large display. Benchtop: For laboratory and production Three measurement modes: Pulse-Echo, Echo-Echo, Echo-Echo-Echo Extended datalogger: Structured storage of tightening data Large display: High-contrast reading Automatic calibration: On bolt length Elongation measurement:\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT BT2-DL Max II top-of-the-range benchtop ultrasonic bolt tension monitor","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-bt2-dl_misuratore_tensione_bulloni_versione_top_di_gamma-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-bt2-dl_misuratore_tensione_bulloni_versione_top_di_gamma-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-bt2-dl_misuratore_tensione_bulloni_versione_top_di_gamma-web-680x680-1.webp?fit=680%2C680&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":3159,"url":"https:\/\/ultrasuonindt.it\/en\/applications\/energy-and-renewables\/","url_meta":{"origin":5468,"position":5},"title":"Energy and Renewables","author":"GSM","date":"7 September 2026","format":false,"excerpt":"In the energy sector two checks determine plant availability: the actual load on the bolts in structural joints and the remaining wall thickness of piping and steam generators. Both are carried out by the ultrasonic method, both within extremely tight outage windows. \u2713 Measurement of the bolt's actual load, not\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor ultrasonic bolt elongation measurement application","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\/en\/wp-json\/wp\/v2\/pages\/5468","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/users\/157040980"}],"replies":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/comments?post=5468"}],"version-history":[{"count":4,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages\/5468\/revisions"}],"predecessor-version":[{"id":8387,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages\/5468\/revisions\/8387"}],"up":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/pages\/3159"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/media\/2763"}],"wp:attachment":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/media?parent=5468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}