Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 2001.11b
  • /
  • Pages.888-891
  • /
  • 2001
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Impedance Tube Measurements of Sound Absorbing Materials： Sensitivity Analysis on Backing Conditions

임피던스 관을 이용한 흡음재의 특성 임피던스 측정： 배후조건에 따른 민감도 분석

  • 이종화 (한국과학기술원 기계공학과 소음 및 진동제어 연구센터) ;
  • 이정권 (한국과학기술원 기계공학과 소음 및 진동제어 연구센) ;
  • 박봉현 ((주)브이피코리) ;
  • 김병훈 ((주)브이피코리아)
  • Published : 2001.11.01
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Abstract

Effects of backing conditions on the impedance tube measurement are investigated experimentally, by using several pairs of generally employed end conditions. The results show that the measured values are similar for most of pairs, except the case of using an open pipe condition. In addition, the random error is investigated in the viewpoint of the variation of test conditions. The multi-termination method is suggested for minimizing such a random error.

Keywords