Wave transmission and attenuation characteristics of EAP

Jaehwan Kim; Joon-Hyung Kim; Vasundara V. Varadan; Vijay K. Varadan

doi:10.1117/12.475197

11 July 2002 Wave transmission and attenuation characteristics of EAP

Jaehwan Kim, Joon-Hyung Kim, Vasundara V. Varadan, Vijay K. Varadan

Proceedings Volume 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD); (2002) https://doi.org/10.1117/12.475197
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

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.

Citation Download Citation

Jaehwan Kim, Joon-Hyung Kim, Vasundara V. Varadan, and Vijay K. Varadan "Wave transmission and attenuation characteristics of EAP", Proc. SPIE 4695, Smart Structures and Materials 2002: Electroactive Polymer Actuators and Devices (EAPAD), (11 July 2002); https://doi.org/10.1117/12.475197

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