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

• Main Authors: Lu, Zhenbo, Shrestha, Milan, Lau, Gih-Keong
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2017
• Subjects: Acoustic absorption; Elastomeric polymers
• Online Access: https://hdl.handle.net/10356/83352; http://hdl.handle.net/10220/42567
• Institution: Nanyang Technological University

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...