Newly developed measuring method of high-power characteristics of piezoelectric transducer constants including dielectric loss

Seiji Hirose; Akinori Yamada; Takehiro Takano; Sadayuki Takahashi

doi:10.1117/12.293494

14 November 1997 Newly developed measuring method of high-power characteristics of piezoelectric transducer constants including dielectric loss

Seiji Hirose, Akinori Yamada, Takehiro Takano, Sadayuki Takahashi

Author Affiliations +

Proceedings Volume 3241, Smart Materials, Structures, and Integrated Systems; (1997) https://doi.org/10.1117/12.293494
Event: Far East and Pacific Rim Symposium on Smart Materials, Structures, and MEMS, 1997, Adelaide, Australia

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.

Citation Download Citation

Seiji Hirose, Akinori Yamada, Takehiro Takano, and Sadayuki Takahashi "Newly developed measuring method of high-power characteristics of piezoelectric transducer constants including dielectric loss", Proc. SPIE 3241, Smart Materials, Structures, and Integrated Systems, (14 November 1997); https://doi.org/10.1117/12.293494

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