Thickness measurement of surface attachment on plate with SH wave - 文章详情页

作者：

Wu, Bin (Wu, Bin.) (学者：吴斌) | Li, Yang (Li, Yang.) | Zheng, Yang (Zheng, Yang.) | He, Cunfu (He, Cunfu.) (学者：何存富)

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摘要：

A　technique　based　on　shear　horizontal　(SH)　wave　for　thickness　measurement　of　surface　attachment　on　plate　is　presented.　This　nondestructive　method　is　implemented　by　using　the　relationship　between　SH　wave　dispersion　variety　and　the　thickness　changing.　Propagation　of　SH　wave　in　bi-layer　elastic　structure　is　modeled　and　analyzed.　Considering　several　conditions　of　surface　attachment　such　as　boiler　scale,　the　dispersion　curve　of　SH　wave　which　varying　with　attachment　thickness　is　tracked.　A　concrete　implementation　of　the　SH　wave　attachment　thickness　measurement　is　provided.　The　experimental　study　on　boiler　scale　thickness　detection　is　carried　out　with　the　Steel-CaCO3　bilayer　specimen.　The　results　show　that　the　measurement　of　surface　attachment　thickness　(including　relative　thick　or　thin　attachment)　with　SH　wave　can　be　realized　by　measuring　the　group　velocity　of　SH0　mode　under　low　or　high　frequency.

关键词：

Boilers Calcite Calcium carbonate Dispersion (waves) Plates (structural components) Shear flow Shear waves Thickness gages Thickness measurement

作者机构：

[ 1 ] [Wu, Bin]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Li, Yang]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zheng, Yang]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
[ 4 ] [He, Cunfu]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

电子邮件地址：

wb@bjut.edu.cn

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