このアイテムのアクセス数: 1551

このアイテムのファイル:
ファイル 記述 サイズフォーマット 
j.apacoust.2009.10.007.pdf230.76 kBAdobe PDF見る/開く
完全メタデータレコード
DCフィールド言語
dc.contributor.authorToyoda, Masahiroen
dc.contributor.authorMu, Rui Linen
dc.contributor.authorTakahashi, Daijien
dc.contributor.alternative豊田, 政弘ja
dc.contributor.alternative高橋, 大弐ja
dc.date.accessioned2010-02-05T02:37:18Z-
dc.date.available2010-02-05T02:37:18Z-
dc.date.issued2010-04-
dc.identifier.issn0003682X-
dc.identifier.urihttp://hdl.handle.net/2433/95081-
dc.description.abstractMicroperforated 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.isoeng-
dc.publisherElsevieren
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.rightsThis is not the published version. Please cite only the published version.en
dc.subjectEigen-mode vibrationen
dc.subjectHelmholtz-resonance absorptionen
dc.subjectMass-spring resonanceen
dc.subjectMicroperforated-panel absorberen
dc.subjectPanel-type absorptionen
dc.titleRelationship between Helmholtz-resonance absorption and panel-type absorption in finite flexible microperforated-panel absorbersen
dc.typejournal article-
dc.type.niitypeJournal Article-
dc.identifier.jtitleApplied Acousticsen
dc.identifier.volume71-
dc.identifier.issue4-
dc.identifier.spage315-
dc.identifier.epage320-
dc.relation.doi10.1016/j.apacoust.2009.10.007-
dc.textversionauthor-
dcterms.accessRightsopen access-
出現コレクション:学術雑誌掲載論文等

アイテムの簡略レコードを表示する

Export to RefWorks


出力フォーマット 


このリポジトリに保管されているアイテムはすべて著作権により保護されています。