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Proceedings Paper

Compression depolarization of PZT piezoelectric materials under high electromechanical driving levels
Author(s): Ching-Yu Lin; Nesbitt W. Hagood
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Paper Abstract

This paper examines the compressive depolarization of commercial lead zirconate titanate PZT-5A piezoelectric ceramics by evaluating the actuation strain at different electric fields, compressive stresses and stress durations. Varying the combination of these parameters allows further understanding of the coupling effects among them. The experimental results showed a remarkable difference between the under-load actuation and the residual actuation, determined at zero stress after exposure to compressive stress. Under-load actuation was reduced relatively low at high compressive stress either at low or high electric excitation levels and was found to be relatively independent of stress duration, while high electric drive residual actuation was found to be strongly dependent upon stress duration and maintained its initial actuation for short compression duration. The data also indicates that the compressive stress combined with high negative electric field can expedite the depolarization of material.

Paper Details

Date Published: 14 June 2000
PDF: 12 pages
Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); doi: 10.1117/12.388194
Show Author Affiliations
Ching-Yu Lin, MIT Active Materials and Structures Lab. (United States)
Nesbitt W. Hagood, MIT Active Materials and Structures Lab. (United States)


Published in SPIE Proceedings Vol. 3992:
Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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