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Article: On the acoustic properties of parallel arrangement of multiple micro-perforated panel absorbers with different cavity depths

TitleOn the acoustic properties of parallel arrangement of multiple micro-perforated panel absorbers with different cavity depths
Authors
Issue Date2011
PublisherAcoustical Society of America. The Journal's web site is located at http://asa.aip.org/jasa.html
Citation
Journal Of The Acoustical Society Of America, 2011, v. 130 n. 1, p. 208-218 How to Cite?
AbstractThe acoustic properties of a compound micro-perforated panel (MPP) absorber array are investigated. The absorber array consists of three parallel-arranged MPP absorbers with different cavity depths. A finite element procedure is used to simulate its acoustic behaviors under normal incidence. Experimental studies are carried out to verify the numerical simulations. Due to different reactance matching conditions in the absorber array, strong local resonance occurs and the corresponding local resonance absorption dominates. Compared with single MPP absorber, the absorber array requires lower acoustic resistance for good absorption performance, and the resonance frequencies shift due to inter-resonator interactions. The different acoustic resistance requirement is explained by considering the reduced effective perforation rate of the MPP in the absorber array. The performance of the absorber array varies with the sizes and spatial arrangement of the component absorbers. When the distance between component absorbers is larger than a quarter-wavelength, the above-mentioned parallel absorption mechanism diminishes. In the experimental study, the normal incidence absorption coefficients of a prototype MPP absorber array are tested. The measured results compare well with the numerical predictions. The experimental study also shows that although other absorption mechanisms may exist, dissipation by the MPP is dominant in the MPP absorber array. © 2011 Acoustical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/139414
ISSN
2015 Impact Factor: 1.572
2015 SCImago Journal Rankings: 0.938
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong SARHKU 7126/08E
Faculty of Engineering (HKU)
Funding Information:

The research reported here is supported by a grant from the Research Grants Council of the Hong Kong SAR (HKU 7126/08E). The first author thanks the Faculty of Engineering (HKU) for the postdoctoral fellowship.

References

 

DC FieldValueLanguage
dc.contributor.authorWang, Cen_HK
dc.contributor.authorHuang, Len_HK
dc.date.accessioned2011-09-23T05:49:15Z-
dc.date.available2011-09-23T05:49:15Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of The Acoustical Society Of America, 2011, v. 130 n. 1, p. 208-218en_HK
dc.identifier.issn0001-4966en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139414-
dc.description.abstractThe acoustic properties of a compound micro-perforated panel (MPP) absorber array are investigated. The absorber array consists of three parallel-arranged MPP absorbers with different cavity depths. A finite element procedure is used to simulate its acoustic behaviors under normal incidence. Experimental studies are carried out to verify the numerical simulations. Due to different reactance matching conditions in the absorber array, strong local resonance occurs and the corresponding local resonance absorption dominates. Compared with single MPP absorber, the absorber array requires lower acoustic resistance for good absorption performance, and the resonance frequencies shift due to inter-resonator interactions. The different acoustic resistance requirement is explained by considering the reduced effective perforation rate of the MPP in the absorber array. The performance of the absorber array varies with the sizes and spatial arrangement of the component absorbers. When the distance between component absorbers is larger than a quarter-wavelength, the above-mentioned parallel absorption mechanism diminishes. In the experimental study, the normal incidence absorption coefficients of a prototype MPP absorber array are tested. The measured results compare well with the numerical predictions. The experimental study also shows that although other absorption mechanisms may exist, dissipation by the MPP is dominant in the MPP absorber array. © 2011 Acoustical Society of America.en_HK
dc.languageengen_US
dc.publisherAcoustical Society of America. The Journal's web site is located at http://asa.aip.org/jasa.htmlen_HK
dc.relation.ispartofJournal of the Acoustical Society of Americaen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.rightsCopyright (2011) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in (Journal of the Acoustical Society of America, 2011, v. 130 n. 1, p. 208-218) and may be found at (http://asadl.org/jasa/resource/1/jasman/v130/i1/p208_s1).en_US
dc.subject.meshAbsorption-
dc.subject.meshAcoustics - instrumentation-
dc.subject.meshFinite Element Analysis-
dc.subject.meshPorosity-
dc.subject.meshSound-
dc.titleOn the acoustic properties of parallel arrangement of multiple micro-perforated panel absorbers with different cavity depthsen_HK
dc.typeArticleen_HK
dc.identifier.emailHuang, L:lixi@hku.hken_HK
dc.identifier.authorityHuang, L=rp00119en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1121/1.3596459en_HK
dc.identifier.pmid21786891-
dc.identifier.scopuseid_2-s2.0-79960680018en_HK
dc.identifier.hkuros196274en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79960680018&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume130en_HK
dc.identifier.issue1en_HK
dc.identifier.spage208en_HK
dc.identifier.epage218en_HK
dc.identifier.eissn1520-8524-
dc.identifier.isiWOS:000292920700031-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWang, C=23487195200en_HK
dc.identifier.scopusauthoridHuang, L=7404735514en_HK

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