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Propagation Behavior of Lamb Waves in Functionally Graded Piezoelectric Plates

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The propagation of lowest-order symmetric (S 0) and anti-symmetric (A 0) Lamb wave modes in a functionally graded piezoelectric material (FGPM) is investigated. The electromechanical material properties change continuously with the thickness of the layer with exponential variation. The first-order differential equations are solved by Peano-Series method. A comparative study has been carried with the ordinary differential equation (ODE). A good agreement is observed between the two methods. The influence of the gradient coefficients of the FGPM on the dispersion curves and the electromechanical coupling factor are investigated. Further, the effect of polarization direction on the electromechanical coupling factor is also illustrated.
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Document Type: Review Article

Publication date: 01 May 2015

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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