Paper Title:
Sound Absorption Properties of Fiber and Porous Materials
  Abstract

The porous materials, such as glass wool or foam, are generally used to attenuate noise. The most fundamental acoustic property of these porous materials is their sound absorption coefficient. The purpose of this paper is sintered fiber and porous materials sound absorption properties investigated. Sound absorption properties of sintered Al fiber has over 0.7 of sound absorption coefficient with 800-2000Hz frequency for 0.6 relative density and 10mm thickness. NRC (noise reduction coefficient) is 0.73. Metal foam have good sound absorption rate at 2000 ~ 4000Hz.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
2687-2690
DOI
10.4028/www.scientific.net/MSF.475-479.2687
Citation
B. Y. Hur, B. K. Park, D.-I. Ha, Y. S. Um, "Sound Absorption Properties of Fiber and Porous Materials", Materials Science Forum, Vols. 475-479, pp. 2687-2690, 2005
Online since
January 2005
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Price
$32.00
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