Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on the Acoustic Properties of Porous Material by Using Acoustic Transfer Matrix

전달행렬법에 의한 다공질 흡음재의 음향특성 연구

  • 박철희 (인하대학교, 기계공학과) ;
  • 주재만 (인하대학교 대학원, 기계공학과) ;
  • 염창훈 (인하대학교 대학원, 기계공학과)
  • Published : 1996.10.01
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Abstract

In this paper, Allard's modelling method which employs the method of acoustic transfer matrix(ATM) is applied to yield more precise results in the analysis of porous sound absorbing material. The method of ATM, based on Biot's theory, is known to play an important role in the estimation of the sound absorption when a sound projects onto the material. In the case of a single layered porous sound absorbing material, the surface impedance and the absorption coefficient by using the method of ATM are estimated. With the variation of the material properties, sound absorption characteristics and analyzed. Transmission Loss in a combination of the porous sound absorbing material with a thin plate is predicted.

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References

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