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The interaction of the S0 Lamb mode with vertical cracks in an aluminium plate by Emmanuel Le Clézio; Michel Castaings; Bernard Hosten is a Engineering article available to read on EtoBox.

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This article presents the interaction of the first symmetric Lamb mode S0 with vertical cracks in an aluminium plate placed in vacuum. The cracks are symmetrical regarding to the median plane of the plate and their heights are increasing from 0% to 100% of the plate thickness, by steps of 25%. The frequency-thickness product is chosen to be lower than the S1 frequency cut-off. A modal decomposition method is used to solve the diffraction problem. The variation with the height of the crack of the reflection and transmission coefficients of modes propagating in the far field is predicted. The displacement fields at both sides of the cracks are also calculated, so that it is possible to quantify the crack-opening displacement. These results are compared to numerical predictions obtained using a finite element software. Measurements are also conducted and compared to the predictions.

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Author

Emmanuel Le Clézio; Michel Castaings; Bernard Hosten

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0041-624X)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)