Influence of Thickness and Density of Nonwoven Sound-Absorbing Material on the Sound-Absorption Capability

Wen Su; Xiao Ming Qian; Xin Yu Li; Shu Sen Liu

doi:10.4028/www.scientific.net/AMR.197-198.440

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 197-198Influence of Thickness and Density of Nonwoven...

Influence of Thickness and Density of Nonwoven Sound-Absorbing Material on the Sound-Absorption Capability

Abstract:

In this paper, the influence of thickness and density of nonwoven materials on the sound-absorption capability is studied through the serial experiments. The results show that the sound-absorption coefficient increases with material thickness increasing and this relationship is more distinct for low or mid frequencies than for high frequencies. When the material thickness is made constant, the sound-absorption coefficient increases with density increasing for low-mid frequencies, while the coefficient decreases with density for high frequencies. The conclusion is that the nonwoven materials with low density structure own better capacity in absorbing sound according to the experiment results.

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Periodical:

Advanced Materials Research (Volumes 197-198)

Pages:

440-443

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.197-198.440

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Online since:

February 2011

Authors:

Wen Su, Xiao Ming Qian, Xin Yu Li, Shu Sen Liu

Keywords:

Density, Nonwoven Material, Sound Absorption Coefficient, Thickness

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