Fatigue response of a PZT multilayer actuator under high-field electric cycling with mechanical preload

Hong Wang; Andrew A. Wereszczak; Hua Tay Lin

doi:10.1063/1.3065097

Fatigue response of a PZT multilayer actuator under high-field electric cycling with mechanical preload

Hong Wang, Andrew A. Wereszczak, Hua Tay Lin

Mechanical Properties and Mechanics

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

An electric fatigue test system was developed for evaluating the reliability of piezoelectric actuators with a mechanical loading capability. Fatigue responses of a lead zirconate titanate (PZT) multilayer actuator with a platethrough electrode configuration were studied under an electric field (1.7 times that of the coercive field of PZT material) and a concurrent mechanical preload (30.0 MPa). A total of 10⁹ cycles was carried out. Variations in charge density and mechanical strain under the high electric field and constant mechanical loads were observed during the fatigue test. The dc and the first harmonic (at 10 Hz) dielectric and piezoelectric coefficients were subsequently characterized using fast Fourier transformation. Both the dielectric and the piezoelectric coefficients exhibited a monotonic decrease prior to 2.86× 10⁸ cycles under certain preloading conditions, and then fluctuated. Both the dielectric loss tangent and the piezoelectric loss tangent also fluctuated after a decrease. The results are interpreted and discussed with respect to domain wall activities, microdefects, and other anomalies.

Original language	English
Article number	014112
Journal	Journal of Applied Physics
Volume	105
Issue number	1
DOIs	https://doi.org/10.1063/1.3065097
State	Published - 2009

Funding

This research was sponsored by the U.S. DOE, Office of FreedomCAR and Vehicle Technologies, as a part of the Heavy Vehicle Propulsion System Materials Program, under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. This work was supported in part by an appointment to the Oak Ridge National Laboratory Postdoctoral Research Associates Program, sponsored by the U.S. DOE and administered by the Oak Ridge Institute for Science and Education. The authors thank B. Ozpineci and M. Chinthavali for reviewing the manuscript. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.

Funders	Funder number
Oak Ridge National Laboratory
Office of FreedomCar	DE-AC05-00OR22725
U.S. Department of Energy
Oak Ridge National Laboratory
Oak Ridge Institute for Science and Education

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10.1063/1.3065097

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Fatigue response of a PZT multilayer actuator under high-field electric cycling with mechanical preload

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