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Proceedings Paper

PZT/polymer flexible composites for embedded actuator and sensor applications
Author(s): Witold Kowbel; Xiaoxin Xia; William Champion; James C. Withers; Ben K. Wada
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Paper Abstract

Currently, smart structures utilize both polymeric sensor and PZT-based actuators. Polymeric sensors based upon PVDF are limited to about 70 degrees C operating temperature, while PZT-based actuators are inflexible. This paper examines the use of PZT/polymer composites for smart materials applications. Both ferroelectric (VDF) and non- ferroelectric high temperatuer polymers were studied. High temperature composite sensors were fabricated exhibiting g31 values of 90 X 10-3 Vm/N compared to 110 X 10-3 Vm/N for PVDF combined with excellent compliance. On the other hand, 0-3 composite based actuators were fabricated with greatly enhanced d31 over PVDF. Piezo properties and dielectric properties of both sensor and actuators were studied as a function of temperature voltage. Processing-structure-properties relationship was established including key processing parameters such as PZT particle size, enhanced poling additives and polymer properties. Thermal dependence of the 0-3 composites piezoproperties was correlated with glass properties of the polymer. Applications of this new class of 0-3 concepts to cure monitoring of advanced composite systems will be discussed.

Paper Details

Date Published: 12 July 1999
PDF: 11 pages
Proc. SPIE 3675, Smart Structures and Materials 1999: Smart Materials Technologies, (12 July 1999); doi: 10.1117/12.352809
Show Author Affiliations
Witold Kowbel, Materials and Electrochemical Research Corp. (United States)
Xiaoxin Xia, Materials and Electrochemical Research Corp. (United States)
William Champion, Materials and Electrochemical Research Corp. (United States)
James C. Withers, Materials and Electrochemical Research Corp. (United States)
Ben K. Wada, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 3675:
Smart Structures and Materials 1999: Smart Materials Technologies
Manfred R. Wuttig, Editor(s)

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