Study on Acoustical Properties of Struto Nonwovens

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F16%3A00001023" target="_blank" >RIV/46747885:24410/16:00001023 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Study on Acoustical Properties of Struto Nonwovens

Popis výsledku v původním jazyce

This paper presents an experimental investigation on the sound absorption behavior and thermal properties of struto nonwovens, the relationship between these properties were studied as well. Seven struto nonwoven fabrics were selected to examine sound absorption like noise reduction coefficient (NRC) and average values of sound absorption coefficients (SAA) as well as thermal insulation properties including thermal conductivity and thermal resistance, using the Brüel and Kjær impedance tube instrument and Alambeta respectively. The effect of structural parameters, thickness and GSM, on acoustic and thermal properties of struto nonwovens were also investigated. The results showed that fabric thickness and GSM had significant positive effect on both sound absorption and thermal insulation performance of struto nonwovens. It was also observed that sound absorption, NRC and SAA, had insignificant correlation with thermal conductivity while they were strongly correlated with thermal resistance. And the correlation coefficient of NRC and thermal resistance was 0.98313, indicating that NRC was directly proportional to thermal resistance of struto nonwovens. It was concluded that a higher thermal resistance suggested a better sound absorption performance for a struto nonwoven fabric.

Název v anglickém jazyce

Study on Acoustical Properties of Struto Nonwovens

Popis výsledku anglicky

This paper presents an experimental investigation on the sound absorption behavior and thermal properties of struto nonwovens, the relationship between these properties were studied as well. Seven struto nonwoven fabrics were selected to examine sound absorption like noise reduction coefficient (NRC) and average values of sound absorption coefficients (SAA) as well as thermal insulation properties including thermal conductivity and thermal resistance, using the Brüel and Kjær impedance tube instrument and Alambeta respectively. The effect of structural parameters, thickness and GSM, on acoustic and thermal properties of struto nonwovens were also investigated. The results showed that fabric thickness and GSM had significant positive effect on both sound absorption and thermal insulation performance of struto nonwovens. It was also observed that sound absorption, NRC and SAA, had insignificant correlation with thermal conductivity while they were strongly correlated with thermal resistance. And the correlation coefficient of NRC and thermal resistance was 0.98313, indicating that NRC was directly proportional to thermal resistance of struto nonwovens. It was concluded that a higher thermal resistance suggested a better sound absorption performance for a struto nonwoven fabric.

Druh

O - Ostatní výsledky

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů