Influence of the Imperfect Interface on Love-Type Mechanical Wave in a FGPM Layer

Authors

  • A Singhal Madanapalle Institute of Technology and Science, Madanapalle, Andhra Pradesh, India--- Indian Institute of Technology (ISM) Dhanbad, Jharkhand, India
  • S Chaudhary Madanapalle Institute of Technology and Science, Madanapalle, Andhra Pradesh, India
  • S.A Sahu Indian Institute of Technology (ISM) Dhanbad, Jharkhand, India
Abstract:

In this study, we consider the propagation of the Love-type wave in piezoelectric gradient covering layer on an elastic half-space having an imperfect interface between them. Dispersion relation has been obtained in the form of determinant for both electrically open and short cases. The effects of different material gradient coefficients of functionally graded piezoelectric material (FGPM) and imperfect boundary on the phase velocity of Love-type waves are discussed. Also, the influence of mechanically and electrically imperfect interface on the surface wave phase velocity is obtained and shown graphically. The dispersion curves are plotted and the effects of material properties of both FGPM and orthotropic material are studied. Moreover, dispersion relation of the considered microstructure depends substantially on the material gradient coefficients and width of the guiding plate. Numerical results are highlighted graphically and are validated with existing literature. The present study is the prior attempt to show the interfacial imperfection influence with the considered structure on wave phase velocity. The outcomes are widely applicable and useful for the development and characterization of Love-type mechanical waves in FGPM-layered media, SAW devices and other piezoelectric devices.

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Journal title

volume 11  issue 1

pages  201- 209

publication date 2019-03-30

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