Sound damping properties of PUR/nano fabric sandwich structures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F09%3A63508067" target="_blank" >RIV/70883521:28110/09:63508067 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Sound damping properties of PUR/nano fabric sandwich structures
Original language description
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 Re-public) having varying air flow resistivity. Acoustic reactance of porous insulating materials is de-termined 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 re-sistivity. 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 bas
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the 16th International Congress on Sound and Vibration. Recent Developments in Acoustics, Noise and Vibration
ISBN
978-83-60716-71-7
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
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Publisher name
International Institute of Acoustics and Vibration (PL)
Place of publication
Krakow
Event location
Krakow
Event date
Jul 9, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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