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Proceedings Paper

A novel duct silencer using dielectric elastomer absorbers
Author(s): Zhenbo Lu; Yongdong Cui; Jian Zhu; Marco Debiasi
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Paper Abstract

A novel duct silencer was developed using dielectric elastomer absorbers (DEAs). Dielectric elastomer, a lightweight, high elastic energy density and large deformation under high DC/AC voltages smart material, was used to fabricate this new generation actuator. The acoustic performances of this duct silencer were experimentally investigated in a transmission loss (TL) measurement system using two-load method. It was found that the resonance peaks of this new duct silencer could be controlled by applying various DC voltages, a maximum resonance shift of 59.5Hz for the resonance peaks was achieved which indicated that this duct silencer could be adjusted to absorb broadband range noise without any addition mechanical part. Furthermore, the resonance shift and multiple resonances mechanisms using DEAs were proposed and discussed in the present paper which was aiming to achieve broadband noise reduction. The present results also provide insight into the appropriateness of the absorber for possible use as new acoustic treatment to replace the traditional acoustic treatment.

Paper Details

Date Published: 8 March 2014
PDF: 13 pages
Proc. SPIE 9056, Electroactive Polymer Actuators and Devices (EAPAD) 2014, 90562N (8 March 2014); doi: 10.1117/12.2044632
Show Author Affiliations
Zhenbo Lu, National Univ. of Singapore (Singapore)
Yongdong Cui, National Univ. of Singapore (Singapore)
Jian Zhu, National Univ. of Singapore (Singapore)
Marco Debiasi, National Univ. of Singapore (Singapore)


Published in SPIE Proceedings Vol. 9056:
Electroactive Polymer Actuators and Devices (EAPAD) 2014
Yoseph Bar-Cohen, Editor(s)

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