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%2F10%3A63509246" target="_blank" >RIV/70883521:28110/10:63509246 - 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, Břeclav, 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
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Avionica
ISSN
1335-9479
e-ISSN
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Volume of the periodical
12
Issue of the periodical within the volume
20
Country of publishing house
SK - SLOVAKIA
Number of pages
6
Pages from-to
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UT code for WoS article
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EID of the result in the Scopus database
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