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Proceedings Paper

New selection criterion for piezoelectric transducer materials for optimal electro-acoustic power conversion
Author(s): Hai V. Tran; Edward H. David
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Paper Abstract

Conventional design for piezoelectric transducers tends to favor materials with high electromechanical coupling coefficient. However, when the converse piezoelectric effect is used in the design of transducers for maximum mechanical displacement, transducer performance measured by power conversion depends also on other factors such as the type of acoustic wave generated and material constants. An analysis of a piezoelectric transducer shows that maximum mechanical displacement is inversely proportional to the dynamic electromechanical coupling coefficient and the square of acoustic wave velocity. This implies that a slow shear wave in a material having low electromechanical coupling is preferred. Simulation results of different materials for transducer and substrate are presented.

Paper Details

Date Published: 5 November 1992
PDF: 13 pages
Proc. SPIE 1733, New Developments in Ultrasonic Transducers and Transducer Systems, (5 November 1992); doi: 10.1117/12.130612
Show Author Affiliations
Hai V. Tran, MITRE Corp. (United States)
Edward H. David, MITRE Corp. (United States)


Published in SPIE Proceedings Vol. 1733:
New Developments in Ultrasonic Transducers and Transducer Systems
Frederick L. Lizzi, Editor(s)

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