Rayleigh Waves Propagation in a Piezoelectric Layered Half-space with Imperfect Interface

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Sheikh Bagher Mohajer, Mohammad Mahdi | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 49741 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Eskandari, Morteza
Abstract:
The problem of the Rayleigh wave propagation in a piezoelectric layer overlying a piezoelectric half space by an imperfect interface is investigated. These days because of widespread use of the piezoelectric materials in sensors and transducers based on surface waves, the study of wave propagation in these medias is paid attention by many researchers. In this study, imperfection between layer and half-space idealized by springs which have determine values. If the stiffness of springs approaches to infinity, the interface will be perfect. Also, zero stiffness of springs indicates that there is no continuity between layer and half space. With the use of potential functions for displacement field and electric potential and imposing suitable boundary conditions, dispersion equation is achieved. Then, a solution to solve this equation will be offered. Additionally, a numerical example has been investigated
Keywords:
Imperfect Interface ; Layered Half Space ; Piezoelectricity ; Rayleigh Wave ; Sloshing

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