Electrically tunable and broader-band sound absorption by using micro-perforated dielectric elastomer actuator

Zhenbo Lu, Milan Shrestha, Gih Keong Lau*

*此作品的通信作者

研究成果: Article同行評審

61 引文 斯高帕斯(Scopus)

摘要

Most membrane-type acoustic absorbers for low-frequency sound attenuation are applicable only at a fixed resonant frequency for a narrow bandwidth. Tuning of the acoustic absorption spectrum is desired to match the varying noises. This letter presents a micro-perforated dielectric elastomer actuator (MPDEA) to make a broader-band acoustic absorber electrically tunable. Voltage activation of the MPDEA reduces the membrane tension and hole size and thus enables the active shifting of the acoustic absorption spectrum. Such a membrane tuning method does not require discrete mechanical parts as for the cavity tuning method. Also presented are the analytical models to predict the voltage-induced hole size change and acoustic characteristics of MPDEA.

原文English
文章編號182901
期刊Applied Physics Letters
110
發行號18
DOIs
出版狀態Published - 1 5月 2017

指紋

深入研究「Electrically tunable and broader-band sound absorption by using micro-perforated dielectric elastomer actuator」主題。共同形成了獨特的指紋。

引用此