Study of the Transmission of Ultrasonic Guided Wave at the Junction of Two Different Elastic Plates with the Presence of a Defect

Taoufiq Belhoussine Drissi; Bruno Morvan; Mihai Predoi; Jean Louis Izbicki; Pascal Pareige

doi:10.4028/www.scientific.net/KEM.482.21

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Study of the Transmission of Ultrasonic Guided Wave at the Junction of Two Different Elastic Plates with the Presence of a Defect
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 482Study of the Transmission of Ultrasonic Guided...

Study of the Transmission of Ultrasonic Guided Wave at the Junction of Two Different Elastic Plates with the Presence of a Defect

Abstract:

We are interested in a right junction of two plates of different materials (aluminum and copper) placed in contact edge to edge. The aim of this study is the interaction of Lamb waves with a defect located at the junction. The reflection and transmission of the fundamental symmetrical S0 wave is analyzed. The theoretical coefficients of reflection and transmission are obtained by a multi-modal approach based on the orthogonality relations involving different modes. Using the Finite Element Method (FEM), we estimate the limit value of the ratio between the dimension of the defect and the thickness of the structure, for which the multi-modal approach is applicable. In experimental and numerical studies, it is also brought to light the effects of diffraction by the defect.

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Periodical:

Key Engineering Materials (Volume 482)

Pages:

21-29

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.482.21

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Online since:

June 2011

Authors:

Taoufiq Belhoussine Drissi, Bruno Morvan, Mihai Predoi, Jean Louis Izbicki, Pascal Pareige

Keywords:

Lamb Wave, Nondestructive Testing (NDT)

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References

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