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Proceedings Paper

Improved performance in piezoelectric fiber composites using interdigitated electrodes
Author(s): Aaron A. Bent; Nesbitt W. Hagood
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Paper Abstract

Piezoelectric fiber composites were introduced as an alterative to monolithic piezoceramic wafers for structural actuation applications. This manuscript was an investigation into the improvement of piezoelectric fiber composite performance through a non-conventional electroding scheme. An interdigitated electrode pattern introduced the major component of electric field into the plane of the structure (along the fibers) and allowed the use of the primary piezoelectric effect. Two models were developed that predict the composite properties. These models examined the trends of composite properties versus fiber volume fraction for various constituent materials. Improvement was seen by comparing the modeled piezoelectric properties of the new electrodes to the conventional arrangement for fiber composites. Several etched electrode fiber composites were manufactured and tested to validate the models. Good agreement was seen for the capacitance, but the piezoelectric constants showed good agreement at only certain fiber volume fractions.

Paper Details

Date Published: 22 May 1995
PDF: 17 pages
Proc. SPIE 2441, Smart Structures and Materials 1995: Smart Materials, (22 May 1995); doi: 10.1117/12.209822
Show Author Affiliations
Aaron A. Bent, Massachusetts Institute of Technology (United States)
Nesbitt W. Hagood, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2441:
Smart Structures and Materials 1995: Smart Materials
A. Peter Jardine, Editor(s)

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