About: Sound damping properties of PUR/nano fabric sandwich structures

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 structures. 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 structures. (en)
Title	Sound damping properties of PUR/nano fabric sandwich structures Sound damping properties of PUR/nano fabric sandwich structures (en)
skos:prefLabel	Sound damping properties of PUR/nano fabric sandwich structures Sound damping properties of PUR/nano fabric sandwich structures (en)
skos:notation	RIV/70883521:28110/10:63509246!RIV11-MSM-28110___
http://linked.open...avai/riv/aktivita	I Z
http://linked.open...avai/riv/aktivity	I, Z(MSM7088352101)
http://linked.open...iv/cisloPeriodika	20
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Fojtů, Dušan Lapčík, Lubomír Vašina, Martin Lapčíková, Barbora Studýnka, Vojtěch
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Tomáše Bati ve Zlíně / Fakulta technologická
http://linked.open...dnocenehoVysledku	288862
http://linked.open...ai/riv/idVysledku	RIV/70883521:28110/10:63509246
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Polyurethanes; PUR; nano-fabric; sound absorption coefficient; acoustic impedance. (en)
http://linked.open.../riv/klicoveSlovo	sound absorption coefficient PUR Polyurethanes acoustic impedance. nano-fabric
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[489C69E6BB3D]
http://linked.open...i/riv/nazevZdroje	Acta Avionica
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	12
http://linked.open...iv/tvurceVysledku	Fojtů, Dušan Lapčík, Lubomír Lapčíková, Barbora Vašina, Martin Studýnka, Vojtěch Horoshenkov, Kirill
http://linked.open...n/vavai/riv/zamer	Multifunctional Composite Systems Based on Natural and Synthetic Polymers
issn	1335-9479
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	28110
is http://linked.open...avai/riv/vysledek of	Sound damping properties of PUR/nano fabric sandwich structures Sound damping properties of PUR/nano fabric sandwich structures Sound damping properties of PUR/nano fabric sandwich structures

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