Study on Recognize for Lamb Wave Test Signals Based on Finite Element Modeling

Yan Liu; Yue Min Wang; Chuan Jun Shen; Feng Rui Sun

doi:10.4028/www.scientific.net/AMM.288.25

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 288Study on Recognize for Lamb Wave Test Signals...

Study on Recognize for Lamb Wave Test Signals Based on Finite Element Modeling

Abstract:

In the defect test of plate-like structure, acousto-ultrasonic technique can stimulate a multi-mode Lamb wave. This paper used an FEM method to investigate the Lamb wave propagation, the simulating signals are decomposed and reconstructed by MP and compared with the theoretical parameter curve of the frequency dispersed curves. It was proved that matching pursuit based on tEP can accurately search the characteristic parameters of the signal, realize the rapid signal decomposition and reconstruction, and identify the defect signals.

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Periodical:

Applied Mechanics and Materials (Volume 288)

Pages:

25-29

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.288.25

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Online since:

February 2013

Authors:

Yan Liu, Yue Min Wang, Chuan Jun Shen, Feng Rui Sun

Keywords:

Disperse Curve, Finite Element Method (FEM), Lamb Wave, Matching Pursuit

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