Improved performance in piezoelectric fiber composites using interdigitated electrodes

Aaron A. Bent; Nesbitt W. Hagood

doi:10.1117/12.209822

22 May 1995 Improved performance in piezoelectric fiber composites using interdigitated electrodes

Aaron A. Bent, Nesbitt W. Hagood

Proceedings Volume 2441, Smart Structures and Materials 1995: Smart Materials; (1995) https://doi.org/10.1117/12.209822
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

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.

Citation Download Citation

Aaron A. Bent and Nesbitt W. Hagood "Improved performance in piezoelectric fiber composites using interdigitated electrodes", Proc. SPIE 2441, Smart Structures and Materials 1995: Smart Materials, (22 May 1995); https://doi.org/10.1117/12.209822

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