{"id":14568,"date":"2025-09-22T09:26:08","date_gmt":"2025-09-22T00:26:08","guid":{"rendered":"http:\/\/web.tohoku.ac.jp\/yusa\/?p=14568"},"modified":"2025-10-08T21:35:51","modified_gmt":"2025-10-08T12:35:51","slug":"xu-ndte","status":"publish","type":"post","link":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/2025\/xu-ndte\/","title":{"rendered":"\u8ad6\u6587\u63b2\u8f09\u6c7a\u5b9a\uff08NDT&amp;E International\u8a8c\uff09!!"},"content":{"rendered":"\n<p>\u3042\u3068\u5c11\u3057\u3067\u4eca\u5e74\u5ea6\u3082\u534a\u5206\u7d42\u308f\u308a\u304b\u3068\u5c11\u3057\u6182\u9b31\u306b\u306a\u3063\u3066\u3044\u305f\uff19\u6708\u4e0b\u65ec\u3001\u5b09\u3057\u3044\u77e5\u3089\u305b\u304c\u53c2\u308a\u307e\u3057\u305f\u3002Xu\u5148\u751f\u304c\u7b46\u982d\u8457\u8005\uff06\u8cac\u4efb\u8457\u8005\u3068\u3057\u3066NDT&amp;E International\u8a8c\u306b\u6295\u7a3f\u3057\u3066\u3044\u305f\u8ad6\u6587\u306e\u53d7\u7406\u901a\u77e5\u3067\u3059\u3002<a href=\"https:\/\/web.tohoku.ac.jp\/yusa\/index.php\/2025\/farewell-party-for-dr-xu\/\">Xu\u5148\u751f\u306f\u3053\u3061\u3089\u306b\uff11\u5e74\u9593\u6ede\u5728\u3057\u3001\u5b66\u751f\u6307\u5c0e\u3082\u542b\u3081\u3066\u975e\u5e38\u306b\u5927\u304d\u306a\u8ca2\u732e\u3092\u3057\u3066\u304f\u308c\u307e\u3057\u305f<\/a>\u3002\u73fe\u5728\u306fAnhui University of Technology\u306b\u623b\u3063\u3066\u3057\u307e\u3063\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u3088\u3046\u306a\u5f62\u3067Xu\u5148\u751f\u3068\u306e1\u5e74\u304c\u5f62\u306b\u306a\u3063\u305f\u3053\u3068\u306f\u975e\u5e38\u306b\u5b09\u3057\u304f\u601d\u3046\u3068\u3053\u308d\u3067\u3059\u3002\u4eca\u5f8c\u3082\u8272\u3005\u3068\u4e00\u7dd2\u306b\u3067\u304d\u308b\u3053\u3068\u3092\u9858\u3063\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8ad6\u6587\u306e\u6982\u8981\u306f\u4ee5\u4e0b\u3002<\/p>\n\n\n\n<p><span style=\"text-decoration: underline;\">Title:<\/span> <a href=\"https:\/\/doi.org\/10.1016\/j.ndteint.2025.103557\" target=\"_blank\" rel=\"noreferrer noopener\">Probabilistic detection assessment based on one-dimensional signal distribution in eddy current testing under low signal-to-noise ratio<\/a> (\u4fe1\u53f7\u306e1\u6b21\u5143\u5206\u5e03\u306b\u57fa\u3065\u304f\u4f4e\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u6761\u4ef6\u3067\u306e\u6e26\u96fb\u6d41\u63a2\u50b7\u4fe1\u53f7\u306e\u78ba\u7387\u8ad6\u7684\u306a\u304d\u305a\u691c\u51fa\u6027\u8a55\u4fa1)<\/p>\n\n\n\n<p><span style=\"text-decoration: underline;\">Abstract:<\/span> This study proposes a novel approach for evaluating the probability of detection (POD) by considering the spatial distribution characteristics of measured signals, with a particular focus on its application in eddy current testing (ECT) under a low signal-to-noise ratio (SNR) situation. To simulate such a situation, eighteen welded austenitic stainless-steel plates were prepared, and seventy-three artificial slits were introduced parallel to their weld beads to simulate weld cracks. ECT signals were collected from the samples using a uniform eddy current probe. Experimental results revealed that evaluating flaw presence solely based on the maximum amplitude of measured signals, as employed in the conventional \u00e2-a approach, was quite misleading. In contrast, the proposed approach, which quantifies deviations in the one-dimensional spatial distributions of signals inspired by the Gini coefficient used in economics to assess income inequality, provided fewer false positives and false negatives. A multi-parameter POD model was then developed, formulating POD as a function of both the length and depth of a slit using these deviations, namely the Gini values. Decision thresholds, which are critical for POD estimation, were determined from the maximum signal features of the seven slit-free samples. The results demonstrate that the proposed Gini-based approach enables a simpler POD analysis while reducing false detections and mitigating the challenge of setting a proper decision threshold under a low SNR situation, in contrast to the conventional amplitude-based method.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3042\u3068\u5c11\u3057\u3067\u4eca\u5e74\u5ea6\u3082\u534a\u5206\u7d42\u308f\u308a\u304b\u3068\u5c11\u3057\u6182\u9b31\u306b\u306a\u3063\u3066\u3044\u305f\uff19\u6708\u4e0b\u65ec\u3001\u5b09\u3057\u3044\u77e5\u3089\u305b\u304c\u53c2\u308a\u307e\u3057\u305f\u3002Xu\u5148\u751f\u304c\u7b46\u982d\u8457\u8005\uff06\u8cac\u4efb\u8457\u8005\u3068\u3057\u3066NDT&amp;E Internati &#8230; <\/p>\n","protected":false},"author":1,"featured_media":14725,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,8,183],"tags":[151],"class_list":["post-14568","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-achievement","category-journal","category-ndte-int","tag-151"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/web.tohoku.ac.jp\/yusa\/wp-content\/uploads\/2025\/09\/journal_img.png?fit=200%2C200","_links":{"self":[{"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/posts\/14568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/comments?post=14568"}],"version-history":[{"count":6,"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/posts\/14568\/revisions"}],"predecessor-version":[{"id":14576,"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/posts\/14568\/revisions\/14576"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/media\/14725"}],"wp:attachment":[{"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/media?parent=14568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/categories?post=14568"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/web.tohoku.ac.jp\/yusa\/index.php\/wp-json\/wp\/v2\/tags?post=14568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}