Study on Sound Absorption Performance and Transmission Behavior of Perpendicular-laid Nonwovens
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F17%3A00004956" target="_blank" >RIV/46747885:24210/17:00004956 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24410/17:00004956
Result on the web
<a href="http://manu27.magtech.com.cn/Jwk_JFBI/EN/Y2017/V10/I3/173" target="_blank" >http://manu27.magtech.com.cn/Jwk_JFBI/EN/Y2017/V10/I3/173</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3993/jfbim00275" target="_blank" >10.3993/jfbim00275</a>
Alternative languages
Result language
angličtina
Original language name
Study on Sound Absorption Performance and Transmission Behavior of Perpendicular-laid Nonwovens
Original language description
This work deals with the study of acoustic performance of perpendicular-laid nonwovens and their relation to fabric air permeability and thermal properties. Seven perpendicular-laid nonwoven fabrics were selected to examine sound absorption like average values of sound absorption coefficients (α) and noise reduction coefficient (NRC) as well as air permeability and thermal insulation properties. The Brüel and Kjær impedance tube instrument, Alambeta and FX3300 Air Permeability Tester were used for evaluation of acoustic, thermal and air permeability properties, respectively. It was observed that sound absorption had insignificant correlation with thermal conductivity while it was strongly correlated with thermal resistance. And the correlation coefficient of NRC and thermal resistance was 0.9835, indicating that NRC was directly proportional to thermal resistance of perpendicular-laid nonwovens. It also was observed that α was inversely proportional to air permeability, with correlation coefficient 0.95. It was concluded that a higher thermal resistance and lower air permeability suggested a better sound absorption performance for a perpendicular-laid nonwoven fabric.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10307 - Acoustics
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů