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Effect of Polarization Switch upon Stress in Thickness Vibration of a Ferroelectric Plate
Author(s) -
Huo Yongzhong,
Jiang Qing
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb07924.x
Subject(s) - polarization (electrochemistry) , ferroelectricity , materials science , electric field , vibration , amplitude , actuator , stress (linguistics) , piezoelectricity , optics , composite material , optoelectronics , acoustics , electrical engineering , physics , engineering , dielectric , chemistry , linguistics , philosophy , quantum mechanics
The commonly encountered operational failure of ferroelectric actuators is the so‐called electric fatigue resulting from stress‐induced microcracks developed during polarization switch. This article presents a stress analysis for thickness vibration of a ferroelectric plate under cyclic electric loading programs with or without polarization switch. It concludes that polarization switch results in stresses of frequency close to the resonance, independent of the frequency of the applied electric field, and of a substantially large amplitude in comparison with stresses generated in the absence of polarization switch.