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Proceedings Paper

Wave transmission and attenuation characteristics of EAP
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Paper Abstract

The wave transmission and attenuation behaviors of electro-active polymer (EAP) are investigated. Nonionic EAP is made by PVA (Polyvinyl Alcohol) with DMSO (dimethyl sulfoxide), and aluminum electrodes are made on both sides of the EAP. Two types of wave transmission experiments are performed. Acoustic waves are normally impinged upon the EAP plate and the transmitted sound pressure level is measured using microphones. The EAP plate exhibits a good passive damping performance at mid frequency region. When an electric field is applied, the resonance of EAP plate is shifted down due to the change of the thickness of the plate. This tunable characteristic is applicable for escaping a certain noise frequency.

Paper Details

Date Published: 11 July 2002
PDF: 5 pages
Proc. SPIE 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD), (11 July 2002); doi: 10.1117/12.475197
Show Author Affiliations
Jaehwan Kim, Inha Univ. (South Korea)
Joon-Hyung Kim, Inha Univ. (South Korea)
Vasundara V. Varadan, The Pennsylvania State Univ. (United States)
Vijay K. Varadan, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 4695:
Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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