{"id":170,"count":3,"description":"<strong>DAC<\/strong> curves (Distance Amplitude Correction) are an essential tool for sizing defects detected by ultrasound. The DAC curve, built experimentally on a reference block, compensates for signal attenuation with depth: this makes it possible to compare echo amplitudes correctly at different distances and to assess the severity of the defect. \n\nIn this section we bring together articles and working procedures on the use of DAC curves in Dakota flaw detectors, in particular for weld inspection to AWS D1.1 and other codes.\nDakota instruments with DAC curves\n\n \t<a href=\"https:\/\/ultrasuonindt.it\/prodotti\/rilevatori-di-difetti\/dakota-fx70-dl-rilevatore-di-difetti-ultrasonico-portatile\/\">Dakota FX70-DL<\/a> \u2014 portable flaw detector supporting DAC and DGS-AVG curves.\n \t<a href=\"https:\/\/ultrasuonindt.it\/prodotti\/rilevatori-di-difetti\/dakota-fx81-dl-rilevatore-di-difetti-benchtop\/\">Dakota FX81-DL<\/a> \u2014 benchtop version for procedure qualification.\n\nFurther reading\n<a href=\"https:\/\/ultrasuonindt.it\/aws-d1-ispezione-ultrasonistica-saldature-requisiti\/\">AWS D1.1 ultrasonic weld inspection: requirements<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/ispezione-ultrasonistica-saldature-aws-d1-dakota-fx70\/\">AWS D1.1 weld inspection with the Dakota FX70-DL<\/a> \u00b7 <a href=\"https:\/\/ultrasuonindt.it\/dakota-fx70-dl-vs-fx81-dl-confronto-flaw-detector\/\">FX70-DL vs FX81-DL compared<\/a>\n\nTo qualify a UT procedure with DAC curves on Dakota flaw detectors, contact the <a href=\"https:\/\/ultrasuonindt.it\/contatti\/\">RODER<\/a> team.","link":"https:\/\/ultrasuonindt.it\/en\/argomento\/dac-curves-for-defect-sizing\/","name":"DAC Curves for Defect Sizing","slug":"dac-curves-for-defect-sizing","taxonomy":"post_tag","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DAC Curves for Defect Sizing Archivi - ULTRASUONI NDT<\/title>\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\/argomento\/dac-curves-for-defect-sizing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DAC Curves for Defect Sizing Archivi - ULTRASUONI NDT\" \/>\n<meta property=\"og:description\" content=\"DAC curves (Distance Amplitude Correction) are an essential tool for sizing defects detected by ultrasound. The DAC curve, built experimentally on a reference block, compensates for signal attenuation with depth: this makes it possible to compare echo amplitudes correctly at different distances and to assess the severity of the defect. In this section we bring together articles and working procedures on the use of DAC curves in Dakota flaw detectors, in particular for weld inspection to AWS D1.1 and other codes. Dakota instruments with DAC curves  Dakota FX70-DL \u2014 portable flaw detector supporting DAC and DGS-AVG curves.  Dakota FX81-DL \u2014 benchtop version for procedure qualification. Further reading AWS D1.1 ultrasonic weld inspection: requirements \u00b7 AWS D1.1 weld inspection with the Dakota FX70-DL \u00b7 FX70-DL vs FX81-DL compared To qualify a UT procedure with DAC curves on Dakota flaw detectors, contact the RODER team.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ultrasuonindt.it\/en\/argomento\/dac-curves-for-defect-sizing\/\" \/>\n<meta property=\"og:site_name\" content=\"ULTRASUONI NDT\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"CollectionPage\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/argomento\\\/dac-curves-for-defect-sizing\\\/\",\"url\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/argomento\\\/dac-curves-for-defect-sizing\\\/\",\"name\":\"DAC Curves for Defect Sizing Archivi - ULTRASUONI NDT\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/argomento\\\/dac-curves-for-defect-sizing\\\/#breadcrumb\"},\"inLanguage\":\"en-US\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/argomento\\\/dac-curves-for-defect-sizing\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ultrasuonindt.it\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"DAC Curves for Defect Sizing\"}]},{\"@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\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"DAC Curves for Defect Sizing Archivi - ULTRASUONI NDT","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\/argomento\/dac-curves-for-defect-sizing\/","og_locale":"en_US","og_type":"article","og_title":"DAC Curves for Defect Sizing Archivi - ULTRASUONI NDT","og_description":"DAC curves (Distance Amplitude Correction) are an essential tool for sizing defects detected by ultrasound. The DAC curve, built experimentally on a reference block, compensates for signal attenuation with depth: this makes it possible to compare echo amplitudes correctly at different distances and to assess the severity of the defect. In this section we bring together articles and working procedures on the use of DAC curves in Dakota flaw detectors, in particular for weld inspection to AWS D1.1 and other codes. Dakota instruments with DAC curves  Dakota FX70-DL \u2014 portable flaw detector supporting DAC and DGS-AVG curves.  Dakota FX81-DL \u2014 benchtop version for procedure qualification. Further reading AWS D1.1 ultrasonic weld inspection: requirements \u00b7 AWS D1.1 weld inspection with the Dakota FX70-DL \u00b7 FX70-DL vs FX81-DL compared To qualify a UT procedure with DAC curves on Dakota flaw detectors, contact the RODER team.","og_url":"https:\/\/ultrasuonindt.it\/en\/argomento\/dac-curves-for-defect-sizing\/","og_site_name":"ULTRASUONI NDT","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"CollectionPage","@id":"https:\/\/ultrasuonindt.it\/en\/argomento\/dac-curves-for-defect-sizing\/","url":"https:\/\/ultrasuonindt.it\/en\/argomento\/dac-curves-for-defect-sizing\/","name":"DAC Curves for Defect Sizing Archivi - ULTRASUONI NDT","isPartOf":{"@id":"https:\/\/ultrasuonindt.it\/en\/#website"},"breadcrumb":{"@id":"https:\/\/ultrasuonindt.it\/en\/argomento\/dac-curves-for-defect-sizing\/#breadcrumb"},"inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https:\/\/ultrasuonindt.it\/en\/argomento\/dac-curves-for-defect-sizing\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ultrasuonindt.it\/en\/"},{"@type":"ListItem","position":2,"name":"DAC Curves for Defect Sizing"}]},{"@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"]}]}},"_links":{"self":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/tags\/170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/ultrasuonindt.it\/en\/wp-json\/wp\/v2\/posts?tags=170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}