Changes in mechanical quality factors with canted polarization for piezoelectric actuators

M. Choi, T. Scholehwar, E. Hennig, H. Daneshpajooh, K. Uchino

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Less heat generation and device reliability are essential for high-power piezoelectric actuators. With angled polarization, materials with strong shear properties show enhanced piezoelectricity, with increased elastic loss. This study aims to understand the changes of dielectric, elastic and piezoelectric loss factors with respect to the polarization orientation, and further utilize to design materials for the high-power devices. A new characterization method is proposed for better accuracy in the analysis. 1% Nb doped Pb(Zr,Ti)O3(PZT) are prepared and the loss parameters are analyzed with the effective parameters. For k31vibration mode, maximum quality factor could be obtained with canted polarization in Tetragonal structure under antiresonance drive. For k15vibration mode, maximum quality factor could be obtained with canted polarization in both Rhombohedral and MPB structure under resonance drive. The enhanced quality factor could be considered for the future high-power applications.

Original languageEnglish (US)
Title of host publicationACTUATOR 2018 - 16th International Conference and Exhibition on New Actuators and Drive Systems, Conference Proceedings
EditorsHubert Borgmann
PublisherVDE Verlag GmbH
Pages69-70
Number of pages2
ISBN (Electronic)9783800746750
StatePublished - 2018
Event16th International Conference and Exhibition on New Actuators and Drive Systems, ACTUATOR 2018 - Bremen, Germany
Duration: Jun 25 2018Jun 27 2018

Publication series

NameACTUATOR 2018 - 16th International Conference and Exhibition on New Actuators and Drive Systems, Conference Proceedings

Conference

Conference16th International Conference and Exhibition on New Actuators and Drive Systems, ACTUATOR 2018
CountryGermany
CityBremen
Period6/25/186/27/18

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization

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