Mechanical-Wave Filtering in a Periodically Corrugated Elastic Plate

[+] Author and Article Information
M. A. Hawwa

Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

O. R. Asfar

Department of Electrical Engineering, University of Science and Technology, Irbid, Jordan

J. Vib. Acoust 118(1), 16-20 (Jan 01, 1996) (5 pages) doi:10.1115/1.2889628 History: Received January 01, 1993; Online February 26, 2008


The method of multiple scales is employed to analyze the interaction of SH modes in an elastic plate having periodically corrugated outerfaces. Two types of resonant conditions leading to two-mode as well as four-mode interactions are considered. The results of the analysis are utilized to develop ultrasonic mechanical wave filters operating on frequency bands centered at the resonant frequency. The stop-band filter frequency response is presented in terms of the power reflection coefficient. The characteristics of reflection of these filters are enhanced by imposing amplitude taper on the periodic corrugations.

Copyright © 1996 by The American Society of Mechanical Engineers
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