Lamb wave propagation in a metallic semi-infinite medium covered with piezoelectric layer

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2547-2556
Journal / PublicationInternational Journal of Solids and Structures
Volume39
Issue number9
Publication statusPublished - 30 Apr 2002
Externally publishedYes

Abstract

The Lamb wave propagation in a metallic semi-infinite medium covered with a piezoelectric layer is studied in this paper. The numerical solution of the dispersion curve is simplified by segmenting the phase velocity spectrum into different ranges based on the longitudinal and transverse wave velocities of both materials, and using different forms of wave equations. The results show that the dispersion curves are asymptotic to the transverse velocity of the piezoelectric layer as the wave number increases. The first two mode shapes of the electric potential correspond to a half-cosine distribution at low wave number and a full-sinusoidal distribution at relatively higher wave number. © 2002 Elsevier Science Ltd. All rights reserved.

Research Area(s)

  • Dispersion characteristics, Lamb wave, Mode shapes, Piezoelectric material, Structure analysis