Sound damping properties of PUR/nano fabric sandwich structures
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Sound damping properties of PUR/nano fabric sandwich structures
Popis výsledku v původním jazyce
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
Název v anglickém jazyce
Sound damping properties of PUR/nano fabric sandwich structures
Popis výsledku anglicky
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
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
BI - Akustika a kmity
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2009
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
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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Počet stran výsledku
8
Strana od-do
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Název nakladatele
International Institute of Acoustics and Vibration (PL)
Místo vydání
Krakow
Místo konání akce
Krakow
Datum konání akce
9. 7. 2009
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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