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Proceedings Paper

Investigation of energy absorption capabilities of piezoelectric ceramic
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Paper Abstract

This paper presents an experimental investigation into the damping characteristics of piezoelectric ceramic PZT-5H. The material is subjected to cyclic uniaxial compressive stress (up to 200 MPa) at a constant electric field bias (from 0 to 2 MV/m). The experiments are conducted at 25 degree(s)C, 0 degree(s)C, and 50 degree(s)C. Fraction of energy absorbed (a specific damping capacity_ and elastic modulus are evaluated as a function of bias electric field. For investigated stress amplitudes, the specific damping capacity increases with increasing bias field, reaches a maximum (28-33%) at the optimum field level, and then decreases. The optimum electric field values increase as the stress amplitude increases because the positive electric field and the compressive stress counteract each other in terms of domain wall motion. The damping properties are stable in the investigated temperature range. The piezoceramic is found to have superior damping properties compared to common structural methods.

Paper Details

Date Published: 11 July 2001
PDF: 7 pages
Proc. SPIE 4333, Smart Structures and Materials 2001: Active Materials: Behavior and Mechanics, (11 July 2001); doi: 10.1117/12.432759
Show Author Affiliations
Pavel M. Chaplya, Univ. of California/Los Angeles (United States)
Gregory Paul Carman, Univ. of California/Los Angeles (United States)

Published in SPIE Proceedings Vol. 4333:
Smart Structures and Materials 2001: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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