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Proceedings Paper

Active piezoelectric diaphragms
Author(s): Robert G. Bryant; Robert T. Effinger; Isaiah Aranda; Ben M. Copeland; Ed W. Covington
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Paper Abstract

Several active piezoelectric diaphragms were fabricated by placing unelectroded piezoelectric disks between copper clad films patterned with Inter-Circulating Electrodes (ICE). When a voltage potential is applied to the electrodes, the result is radially distributed electric field that mechanically strains the piezo-ceramic along the Z-axis, rather than the expected in-plane direction. Unlike other out of plane piezoelectric actuators, which are benders, these Radial Field Diaphragms strain concentrically yet afford high displacements while maintaining a constant circumference. This paper covers the fabrication and characterization of these diaphragms as a function of poling field strength, ceramic diameter and line spacing, as well as the surface topography, the resulting strain field and displacement as a function of applied voltage ranging from DC to 10 Hz.

Paper Details

Date Published: 11 July 2002
PDF: 12 pages
Proc. SPIE 4699, Smart Structures and Materials 2002: Active Materials: Behavior and Mechanics, (11 July 2002); doi: 10.1117/12.474988
Show Author Affiliations
Robert G. Bryant, NASA Langley Research Ctr. (United States)
Robert T. Effinger, Texas A&M Univ. (United States)
Isaiah Aranda, Texas A&M Univ. (United States)
Ben M. Copeland, NASA Langley Research Ctr. (United States)
Ed W. Covington, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 4699:
Smart Structures and Materials 2002: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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