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Title: Analysis of the resonance modes of PZT/epoxy 1-3 composite rings
Authors: Chong, CP
Chan, HLW 
Chan, MH
Liu, PCK
Keywords: PZT/epoxy composite rings
Finite element rings
Piezoceramic rings
Medical ultrasonic imaging
Ultrasonic transducers
Issue Date: 2002
Publisher: IEEE
Source: ISAF 2002 : proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics : Nara, Japan, May 28-June 1, 2002, p. 295-298 How to cite?
Abstract: PZT/epoxy 1-3 composite rings with PZT volume fractions Φ ranging from 0.58 to 0.93 are fabricated. They have sufficiently small epoxy width (~77-81 µm) and can be treated as effective homogeneous media. The mode coupling theory and a finite element model (FEM) are applied to predict the thickness (f[sub T]), lateral (f[sub L]), radial (f[sub R]) and wall-thickness (f[sub W]) resonances of the composite rings. As the frequencies and electromechanical coupling coefficients play a significant role in the performance of composite transducer, it is important to know how these parameters change with Φ. Good agreements are found between the experimental results and the FEM simulations. It is obvious that f[sub R] and f[sub W] vibrations greatly deteriorate at low value of Φ. To avoid unwanted modes from coupling to f[sub T], the thickness and configuration of the PZT elements in the rings should be optimized.
ISBN: 0-7803-7414-2
ISSN: 1099-4734
Rights: © 2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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