Applications of lightweight thermoplastic sound absorptive panels

Xin Yan, D. W. Herrin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Thermoplastic panels have been developed that may be considered as collections of Helmholtz resonators. The material has a plastic layer on either side with interconnected honeycomb cells sandwiched between the two layers. The top layer has differing sized holes which act as the necks for Helmholtz resonators whereas the bottom layer is sealed. Honeycomb cell walls have been strategically removed so that Helmholtz resonators are tuned to different frequencies. The cumulative effect of the resonators produces broadband sound absorption. It is demonstrated that the panels, which are 0.9 cm thick, can be affixed inside of an enclosure and are roughly as effective as 5 cm thick acoustic fiber. The materials are then used as duct liner and similar effectiveness is observed.

Original languageEnglish
Title of host publicationProceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020
EditorsJin Yong Jeon
ISBN (Electronic)9788994021362
StatePublished - Aug 23 2020
Event49th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2020 - Seoul, Korea, Republic of
Duration: Aug 23 2020Aug 26 2020

Publication series

NameProceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020

Conference

Conference49th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2020
Country/TerritoryKorea, Republic of
CitySeoul
Period8/23/208/26/20

Bibliographical note

Publisher Copyright:
© Proceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020. All rights reserved.

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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