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DCフィールド | 値 | 言語 |
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dc.contributor.author | Toyoda, Masahiro | en |
dc.contributor.author | Mu, Rui Lin | en |
dc.contributor.author | Takahashi, Daiji | en |
dc.contributor.alternative | 豊田, 政弘 | ja |
dc.contributor.alternative | 高橋, 大弐 | ja |
dc.date.accessioned | 2010-02-05T02:37:18Z | - |
dc.date.available | 2010-02-05T02:37:18Z | - |
dc.date.issued | 2010-04 | - |
dc.identifier.issn | 0003682X | - |
dc.identifier.uri | http://hdl.handle.net/2433/95081 | - |
dc.description.abstract | Microperforated panels (MPPs) can provide wide-band absorption without fibrous and porous materials and are recognized as next-generation absorption materials. Although the fundamental absorbing mechanism of an MPP absorber is Helmholtz-resonance absorption, sound-induced vibration of an MPP itself can affects the absorption characteristics. There have been some studies considering the effects of the sound-induced vibration and there even is a proposal to widen the absorption bandwidth by positively utilizing the vibration of an MPP itself. On the other hand, in a previous study, the relationship between MPP absorbers and panel-type absorbers was investigated with infinite theory. However, the relationship between Helmholtz-resonance absorption and panel-type absorption in finite flexible MPP absorbers has not been clarified. Herein, from the viewpoint of an absorption-characteristics transition with the perforation ratio, the relationship between Helmholtz-resonance absorption and panel-type absorption including the effects of eigen-mode vibrations of the panel is theoretically and experimentally investigated. The analytical model considers a finite flexible MPP supported in a circular duct, and the predicted data for the absorption coefficient under normal incidence is validated by an experiment using an acoustic tube. From this investigation, it is found that panel-type absorption due to eigen-mode vibrations of the panel occurs independently from Helmholtz-resonance absorption, while panel-type absorption due to a mass–spring resonance of a panel and a back cavity has a trade-off relationship with Helmholtz-resonance absorption with respect to the perforation ratio. | en |
dc.language.iso | eng | - |
dc.publisher | Elsevier | en |
dc.rights | © 2009 Elsevier Ltd All rights reserved. | en |
dc.rights | この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | ja |
dc.rights | This is not the published version. Please cite only the published version. | en |
dc.subject | Eigen-mode vibration | en |
dc.subject | Helmholtz-resonance absorption | en |
dc.subject | Mass-spring resonance | en |
dc.subject | Microperforated-panel absorber | en |
dc.subject | Panel-type absorption | en |
dc.title | Relationship between Helmholtz-resonance absorption and panel-type absorption in finite flexible microperforated-panel absorbers | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Applied Acoustics | en |
dc.identifier.volume | 71 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | 315 | - |
dc.identifier.epage | 320 | - |
dc.relation.doi | 10.1016/j.apacoust.2009.10.007 | - |
dc.textversion | author | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |

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