Wavelet Ridge Analysis of Lamb Wave

Xiao Chen; Kai Xu

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

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 457-458Wavelet Ridge Analysis of Lamb Wave

Wavelet Ridge Analysis of Lamb Wave

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 457-458)

Pages:

484-487

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.457-458.484

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Online since:

January 2012

Authors:

Xiao Chen, Kai Xu

Keywords:

Crazy Climber Algorithm, Lamb Wave, Nondestructive Testing (NDT), Ridge, Wavelet Transform (WT)

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