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Material Parameter Determination in Glass Wool Mat for Sound Absorption
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Material Parameter Determination in Glass Wool Mat for Sound Absorption

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Abstract:

Glass wool mat is widely used in the fields of building engineering, transport facilities and refrigeration equipment. In this paper, the effect of material parameters such as density, thickness, porosity, and flow resistivity on the normal incidence absorption coefficient has been studied. In addition, fiber length is also investigated to achieve appropriate strength. The prediction error of normal incidence absorption coefficient by modified Johnson–Allard model is less than 5% in the frequency range between 800 Hz and 5 kHz. We could use the modified Johnson–Allard model to determine the parameter of glass wool mat for better development.

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Periodical:

Applied Mechanics and Materials (Volumes 148-149)

Pages:

1271-1275

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.148-149.1271

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Online since:

December 2011

Authors:

Cheng Dong Li, Zhao Feng Chen, Jie Ming Zhou, Bin Bin Li, Wang Ping Wu, Zhou Chen, Teng Zhou Xu, Jin Lian Qiu

Keywords:

Glass Wool Mat, Modified Johnson–Allard Model, Normal Incidence Absorption Coefficient

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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