Post Treatment of Guided Wave by using Wavelet Transform in the Presence of a Defect on Surface

This article presents a Lamb wave processing by using two methods: Fast Fourier Transform (FFT2D) and Continuous Wavelet Transform (CWT) using Morlet wavelet. This treatment is done for a structure of two aluminum-copper plates, which are in contact edge to edge of a perpendicular junction with a th...

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Bibliographic Details
Published in:International journal of advanced computer science & applications 2019, Vol.10 (7)
Main Authors: Rachid, MARRAKH, Houda, ALOUANE, DRISSI, BELHOUSSINE, Benayad, NSIRI, Soumaya, ZAYRIT
Format: Article
Language:English
Subjects:
Aluminum
Continuous wavelet transform
Defects
Fast Fourier transformations
Fourier transforms
Incident waves
Lamb waves
Metal plates
Morlet wavelet
Wavelet transforms
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Summary:This article presents a Lamb wave processing by using two methods: Fast Fourier Transform (FFT2D) and Continuous Wavelet Transform (CWT) using Morlet wavelet. This treatment is done for a structure of two aluminum-copper plates, which are in contact edge to edge of a perpendicular junction with a thickness “e” in the presence of a rectangular and symmetrical defect located on the surface of the junction with a depth “d”. The aim under this study is to calculate the transmission and reflection energy coefficients by the two methods. The results of simulation obtained by Comsol software of an incident wave S0 at F = 800 kHz indicate us a good coherence between the two methods (FFT2D and CWT).
ISSN:2158-107X
2156-5570
DOI:10.14569/IJACSA.2019.0100741