Experimental study on the mode conversion of lamb waves in a metal plate of stepped thickness using optical detection

被引：1
|
作者：
Imano K. [1 ]
机构：
[1] Department of Electrical and Electronic Engineering, Faculty of Engineering and Resource Science, Akita University, Akita 010-8502
来源：
International Journal of the Society of Material Engineering for Resources | 2010年 / 17卷 / 02期
关键词：
Lamb wave; Mode conversion; Non-destructive evaluation (NDE); Optical detection;
D O I：
10.5188/ijsmer.17.201
中图分类号：
学科分类号：
摘要：
The optical observation of the propagation of Lamb waves in an aluminum plate with stepped thickness is described. Lamb waves passing through the aluminum plate were analyzed by two-dimensional Fourier transformation to discriminate modes and thus determine mode conversion. S0-mode and A0-mode Lamb waves corresponding to theoretical dispersion curves were experimentally found to propagate in the aluminum plate. Conversion from A0-mode to S0-mode waves at the thickness step was also observed. This mode conversion of Lamb waves is thus a useful index for detecting defects such as ablation, wear and wall reduction. © 2010 Soc. Mater. Eng. Resour.
引用
收藏
页码：201 / 204
页数：3
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