Wavelet Ridge Analysis of Lamb Wave

被引：3

作者：

Chen, Xiao ^{[1
]}

Bao, Lisuo ^{[1
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Sch Elect & Informat Engn, Nanjing 210044, Jiangsu, Peoples R China

来源：

ADVANCED MATERIALS AND ENGINEERING MATERIALS, PTS 1 AND 2 | 2012年 / 457-458卷

关键词：

Wavelet transform; Nondestructive testing; Lamb wave; Ridge; Crazy climber algorithm;

D O I：

10.4028/www.scientific.net/AMR.457-458.484

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lamb wave has important application value in material nondestructive testing. It is a kind of ultrasonic guided wave propagating in thin plate material. It has the dispersion characteristic, which greatly limits its wide application in material evaluation. After continuous wavelet transformation, we extract the feature of ridge of Lamb wave signals by adopting crazy climber algorithm. Experimental results show that Lamb wave after transmission of a certain distance has the characteristics like asymptotic signal. The ridge can reflect the dispersion characteristic of Lamb wave.

引用

页码：484 / 487

页数：4

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