다중 다공판 시스템의 흡음성능 예측을 위한 계산모델 개발

A New Estimation Model of Predicting the Sound Absorption Performance for Multiple Perforated Plate Systems

  • 허성춘 (서울산업대학교 산업대학원 기계공학과) ;
  • 이동훈 (서울산업대학교 기계공학) ;
  • 권영필 (숭실대학교 기계공학과)
  • 발행 : 2002.05.01

초록

A new estimation model of predicting the sound absorption performance for multiple perforated plate sound absorbing system was developed using transfer matrix method. The proposed method was validated by comparing the calculated absorption coefficients of a single layer perforated plate with the values measured by the two-microphone impedance tube method far various porosity and cavity depth. The developed transfer matrix method was further applied to estimate the multiple layer perforated plates and it is shown that the estimated absorption coefficients generally agree well with the measured values.

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