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Type: Journal article
Title: On accuracy of analytical modeling of Lamb wave scattering at delaminations in multilayered isotropic plates
Author: Ng, C.
Citation: International Journal of Structural Stability and Dynamics, 2015; 15(8):1540010-1-1540010-11
Publisher: World Scientfic Publishing
Issue Date: 2015
ISSN: 0219-4554
Statement of
C.T. Ng
Abstract: The study investigates the accuracy of analytical solutions to the fundamental anti-symmetric Lamb wave scattering at delamination in multilayered isotropic plates. The analytical models are based on the wave function expansion method and Born approximation within the framework of Mindlin plate theory. The study validates the accuracy of modeling the delamination as an inhomogeneity with reduced bending rigidity in predicting Lamb wave scattering induced by geometry change at the delaminated region. A good agreement is observed between the analytical solutions and results of experimentally verified 3D explicit finite element (FE) simulations. The findings support the inhomogeneity assumption in Lamb wave scattering problems and show the feasibility of employing it in delamination characterization.
Keywords: Lamb wave; scattering; delamination; Mindlin plate; wave function expansion; Born approximation; finite element; diffraction tomography
Rights: ©World Scientific Publishing Company
DOI: 10.1142/S0219455415400106
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Appears in Collections:Aurora harvest 3
Civil and Environmental Engineering publications

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