Abstract
In this study, the propagation of SH waves in a coupled plate consisting of a piezoelectric layer and an elastic layer is analytically investigated. The piezoelectric material is polarized in the z-axis direction and perfectly bonded to an elastic layer. The mathematical model of the SH wave propagation in this plate is based on the type of surface wave solution. Dispersion relations with respect to phase velocity are obtained for electrically open and mechanically free. Numerical examples are provided to illustrate graphically and compare the variations of the phase and group velocities versus the wave number for the different layers. The thickness ratio and the properties of the two layers have a significant effect on the propagation of SH waves. The conclusions are meaningful both theoretically and practically for the design of high-performance surface acoustic wave (SAW) devices.
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This paper was recommended for publication in revised form by Editor Keum Shik Hong
Myung Seob Son received M.S. degree in Mechanical Engineering from Yonsei University (Seoul, Korea) in 2003. After his M.S. degree, he has been working as a researcher of Steering division in Mando Corporation. And he has been in the doctoral course at Seoul National University (Seoul Korea) from 2008. His research interests are in the area of piezoelectric materials and acoustical materials. Also he has been particularly interested in the eigenvalue analysis of sound propagation characteristics in a Duct lined with poroelastic foams.
Yeon June Kang received his B.S. and M.S. degrees in Mechanical Design and Production Engineering from Seoul National University in 1988 and 1990, respectively. He then went on to receive a Ph.D. degree in Acoustics and Vibration from School of Mechanical Engineering, Purdue University in 1994. After his Ph.D., he continued to work as a Postdoctoral Research Associate at Ray W. Herrick Laboratories, Purdue University until 1996. Since 1997, Dr. Kang is working at the Department of Mechanical and Aerospace Engineering, Seoul National University. Dr. Kang’s research interests are in the area of acoustical materials, noise and vibration in automotive engineering, and Korean Bells.
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Son, M.S., Kang, Y.J. Propagation behavior of SH waves in layered piezoelectric plates. J Mech Sci Technol 25, 613–619 (2011). https://doi.org/10.1007/s12206-011-0114-8
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DOI: https://doi.org/10.1007/s12206-011-0114-8