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Sound damping properties of PUR/NANO fabric sandwich structures

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dc.title Sound damping properties of PUR/NANO fabric sandwich structures en
dc.contributor.author Lapčík, Lubomír
dc.contributor.author Studýnka, Vojtěch
dc.contributor.author Vašina, Martin
dc.contributor.author Fojtů, Dušan
dc.contributor.author Lapčíková, Barbora
dc.relation.ispartof 16th International Congress on Sound and Vibration 2009, ICSV 2009
dc.identifier.isbn 978-1-61567-736-8
dc.date.issued 2009
utb.relation.volume 4
dc.citation.spage 2484
dc.citation.epage 2491
dc.event.title 16th International Congress on Sound and Vibration 2009, ICSV 2009
dc.event.location Krakow
utb.event.state-en Poland
utb.event.state-cs Polsko
dc.event.sdate 2009-07-05
dc.event.edate 2009-07-09
dc.type conferenceObject
dc.language.iso en
dc.description.abstract Open cell polyurethane (PUR) foams (Gumotex, Breclav, Czech Republic) of varying pore size distribution were tested for sound damping in the perpendicular incident sound wave geometry by means of Kundt's tube measurements in the frequency range of 50-6400 Hz. Tested samples were modified by coating the top layer by nano non-woven fabric of PUR bases (SPUR, Zlin, Czech Republic) produced by means of Nanospider technology (ELMARCO, Liberec, Czech Republic) having varying air flow resistivity. Acoustic reactance of porous insulating materials is determined by layer thickness and in the lesser extent by surface density of the air permeable surface film coating. Acoustic resistance of the porous insulating material is determined by the air flow resistivity. This study allow to characterize the effect of the mutual influence of acoustic resistance and acoustic reactance components of the complex acoustic impedance on final sound damping characteristics of the studied sandwich like PUR based structures. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1004898
utb.identifier.scopus 2-s2.0-84871444094
utb.source d-scopus
dc.date.accessioned 2015-06-04T12:55:55Z
dc.date.available 2015-06-04T12:55:55Z
utb.contributor.internalauthor Lapčík, Lubomír
utb.contributor.internalauthor Studýnka, Vojtěch
utb.contributor.internalauthor Vašina, Martin
utb.contributor.internalauthor Fojtů, Dušan
utb.contributor.internalauthor Lapčíková, Barbora
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