Scattering of S sub(0) Lamb mode in plate with multiple damage

A study of scattering properties of S sub(0) mode Lamb wave in an infinite plate with multiple damage is presented. Plate theory and wave function expansion method are used to derive the analytical solutions for the scattering wave field in plate with a single damage, and by using the addition theor...

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Bibliographic Details
Published inApplied mathematical modelling Vol. 35; no. 1; pp. 550 - 562
Main Authors Deng, Qing-Tian, Yang, Zhi-Chun
Format Journal Article
LanguageEnglish
Published 01.01.2011
Subjects
Assessments
Computer simulation
Damage
Lamb
Mathematical analysis
Mathematical models
Plate theory
Scattering
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Summary:A study of scattering properties of S sub(0) mode Lamb wave in an infinite plate with multiple damage is presented. Plate theory and wave function expansion method are used to derive the analytical solutions for the scattering wave field in plate with a single damage, and by using the addition theorems of Bessel functions, interference phenomena between scattering wave fields from different damage is investigated. Measurements agree well between theoretical results and FE simulation study of plate with two damage and validity of the model is confirmed. Numerical results of scattering displacement field in plate with two and three damage are graphically presented and discussed. An assessment of effects of damage geometric properties on the scattering properties is made.
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ISSN:0307-904X
DOI:10.1016/j.apm.2010.07.022