A tunable, light-weight and compact silencer

Zhenbo Lu, Xiang Yu, Fanseng Cui, Li Cheng, Yongdong Cui, Boo Cheong Khoo

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

All rights reserved. A tunable, light weight and compact silencer using dielectric elastomer acoustic metamaterials (DEAMs) is investigated in this study. We propose a light-weight and compact acoustic silencer design formed of arrays of acoustic resonators by employing various pre-stretched dielectric elastomer (DE) membranes with conductive electrodes, central platelets and compact back cavities for achieving tunable and broadband acoustic property in the low frequency ranges. The acoustic performance of the proposed device in terms of transmission loss (TL) is experimentally characterized and analyzed. The resulted TL can be tuned by varying the applied voltages to the DE membranes showing promising potentials as adaptive and light-weight sound control devices for suppressing the targeted propeller noises on a multi-rotor MAV within a compact space and other aeronautical engineering applications.
Original languageEnglish
Title of host publicationProceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future
PublisherGerman Acoustical Society (DEGA)
Pages5461-5467
Number of pages7
Publication statusPublished - 21 Aug 2016
Event45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 - Hamburg, Germany
Duration: 21 Aug 201624 Aug 2016

Conference

Conference45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016
CountryGermany
CityHamburg
Period21/08/1624/08/16

Keywords

  • Compact silencer
  • Dielectric elastomer acoustic metamaterials (DEAMs)
  • Light-weight
  • Tunable

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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