Measurement of Thickness and Elastic Properties of Electroactive Polymer Films Using Plate Wave Dispersion Data
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
Electroactive thin-film polymers are increasingly being used as sensors and actuators in aerospace structures [1,2]. They also have significant potential for applications in muscle mechanisms and micro-electro-mechanical systems (MEMS). In these applications, polymer films of thickness varying between 20 and 300 μm are utilized. Actuation of these polymers is attributed to piezoelectric, electrostrictive or electrostatic effects. Recent investigations suggest that polymers may produce striction which can be stronger than that delivered by electroactive ceramics. Such response may be produced by polymers with isotacticity or syndiotacticity in their molecular structure, where tacticity is the position of a pendant polymer group with a strong dipole moment that is mounted on a backbone polymeric chain.