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Proceedings Paper

Newly developed measuring method of high-power characteristics of piezoelectric transducer constants including dielectric loss
Author(s): Seiji Hirose; Akinori Yamada; Takehiro Takano; Sadayuki Takahashi
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Paper Abstract

Dielectric loss in a piezoelectric ceramic transducer is concerned with the vibration, and increases remarkably under the high-power operation even in a so-called hard PZT. When ordinary hard PZT ceramics is used over the vibrational velocity of about 0.25 (m/s), the dielectric loss becomes larger than the mechanical vibration loss. In the paper, a new advanced measurement method for obtaining simultaneously both the mechanical loss and the dielectric loss of the piezoelectric ceramic transducer under high-power operation is described. At the resonance frequency, the dielectric loss and the mechanical vibration loss can be separately and simultaneously measured. In the study, some experimental results have been obtained and evaluated with respect to the accuracy. These results are very useful for the precise design of the piezoelectric power devices.

Paper Details

Date Published: 14 November 1997
PDF: 7 pages
Proc. SPIE 3241, Smart Materials, Structures, and Integrated Systems, (14 November 1997); doi: 10.1117/12.293494
Show Author Affiliations
Seiji Hirose, Yamagata Univ. (Japan)
Akinori Yamada, Yamagata Univ. (Japan)
Takehiro Takano, Tohoku Institute of Technology (Japan)
Sadayuki Takahashi, NEC Corp. (Japan)

Published in SPIE Proceedings Vol. 3241:
Smart Materials, Structures, and Integrated Systems
Alex Hariz; Vijay K. Varadan; Olaf Reinhold, Editor(s)

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