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New three-dimensional matrix models of the ultrasonic sandwich transducers

Dragan D Mani^* and Goran Z Stani

Faculty of Electronic Engineering, University of Ni, Ni, Serbia

^* To whom correspondence should be addressed. E-mail: dmancic{at}elfak.ni.ac.yu.

	Abstract

The new 3D models of the prestressed symmetrical and unsymmetrical ultrasonic sandwich transducers are described in this article. The sandwich transducers are modeled through the application of a 3D matrix model of piezoceramic rings and discs, recently proposed by the authors. Theoretical analyses prove the proposed models as simple and easy to calculate, particularly suitable for the investigation of coupled vibrations cases. Experiments show that the measured resonance and antiresonance frequencies are in good agreement with the predicted results. Compared with traditional 1D models and methods, the results obtained by the proposed models matched better with the experimental results.

First published on June 5, 2009
Journal of Sandwich Structures and Materials 2009, doi:10.1177/1099636209103511


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