Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on the Absorption Performance of Steel-Wire Sound Absorbing Materials

금속와이어 흡음재의 흡음성능에 관한 실험적 연구

  • 서성원 (서울산업대학교 기계공학과) ;
  • 용호택 (서울산업대학교 기계공학과) ;
  • 이동훈 (서울산업대학교 기계공학과)
  • Published : 2003.05.01
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Abstract

The acoustic performances of steel-wire sound absorbing materials with different thicknesses and bulk densities were investigated experimentally. The well-known two-cavity method was used to measure the characteristic impedance, propagation constant and absorption coefficient. The normal absorption coefficients measured by two-cavity method agreed well with those by the two-microphone impedance tube method. The experimental results showed that the magnitude of the absorption coefficient and the frequency range of the maximum absorption coefficient were controllable by changing the thickness and bulk density of the steel-wire. Therefore, the steel-wires obtained from the crushed tire chips could be used as a good absorbing material.

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References

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