{"id":289,"date":"2016-02-09T23:00:00","date_gmt":"2016-02-09T22:00:00","guid":{"rendered":"https:\/\/www.extende.com\/blog\/single-sided-weld-inspection-using-advanced-ultrasonic-methods\/"},"modified":"2016-02-09T23:00:00","modified_gmt":"2016-02-09T22:00:00","slug":"single-sided-weld-inspection-using-advanced-ultrasonic-methods","status":"publish","type":"post","link":"https:\/\/www.extende.com\/fr\/blog\/single-sided-weld-inspection-using-advanced-ultrasonic-methods\/","title":{"rendered":"Single Sided Weld Inspection Using Advanced Ultrasonic Methods"},"content":{"rendered":"<p>In general practices,\u00a0<span class=\"g-color1\">ultrasonic weld examination<\/span>\u00a0requires probe placement on both sides of the weld to provide complete inspection coverage of the weld volume. \u00a0Some configurations restrict the probe placement to access from only one side of the weld. These weld joints are specified as\u00a0<span class=\"g-color1\">one sided access weld joints<\/span><span class=\"g-color1\">.<\/span>\u00a0The requirement for examination of these kinds of welds\u00a0<span class=\"g-color1\">is a common scenario faced in various industries<\/span>.<\/p>\n<\/p>\n<p>Advanced ultrasonic examination methods such as Phased Array Ultrasonic Testing (PAUT) &amp; Time of Flight Diffraction (ToFD) have provided effective volumetric examination for welds. This is true when scanning is performed from both sides. However for single-sided weld access,\u00a0<span class=\"g-color1\">the limited scanning compromises the detection of lack of fusion<\/span>\u00a0on the bevel opposite to the probe side.<\/p>\n<\/p>\n<p>The authors from\u00a0<span class=\"g-color3\">A-Star Training &amp; Consultancy<\/span><span class=\"g-color3\">\u00a0<\/span>have studied and documented in a paper the ultrasonic\u00a0<span class=\"g-color1\">response of opposite side sub-surface Lack of Fusion (LOF)\u00a0<\/span>in one sided access weld joints\u00a0using ultrasonic examination techniques such as:<\/p>\n<\/p>\n<ul>\n<li>linear phased array\u00a0<span class=\"g-color2\">tip diffraction technique<\/span>,<\/li>\n<li>linear phased array\u00a0<span class=\"g-color2\">third leg examination<\/span><\/li>\n<li>and\u00a0<span class=\"g-color2\">DMA<\/span>\u00a0(Dual Matrix Array) ultrasonic technique.<\/li>\n<\/ul>\n<p>The\u00a0<span class=\"g-color1\">examination sensitivity of the 3 techniques<\/span>\u00a0and the\u00a0<span class=\"g-color1\">detection proficiency<\/span>\u00a0between conventional phased array S-scan and Dual Matrix Phased Array are also presented. The conclusion is that the dual matrix array technique is better than the other techniques evaluated in the paper.\u00a0<span class=\"g-color3\">Experimental results\u00a0are compared with CIVA inspection simulations<\/span>, showing\u00a0good agreement\u00a0between the two.<\/p>\n<\/p>\n<p>For more information, download the paper\u00a0<span class=\"g-color2\">\u00ab\u00a0Single Sided Weld Inspection using Advanced Ultrasonic Methods\u00a0\u00bb<\/span>\u00a0<a class=\"lien\" href=\"http:\/\/www.ndt.net\/search\/docs.php3?showForm=off&amp;id=18677\">\u00a0HERE<\/a>.<\/p>\n<\/p>\n<p>The<span class=\"g-color1\">\u00a0EXTENDE<\/span>&lsquo;s team<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In general practices,\u00a0ultrasonic weld examination\u00a0requires probe placement on both sides of the weld to provide complete inspection coverage of the weld volume. \u00a0Some configurations restrict the probe placement to access from only one side of the weld. These weld joints are specified as\u00a0one sided access weld joints.\u00a0The requirement for examination of these kinds of welds\u00a0is [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":288,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[379],"tags":[],"class_list":["post-289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ndt-consulting-and-techniques"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/posts\/289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/comments?post=289"}],"version-history":[{"count":0,"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/posts\/289\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/media\/288"}],"wp:attachment":[{"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/media?parent=289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/categories?post=289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.extende.com\/fr\/wp-json\/wp\/v2\/tags?post=289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}