한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제19권6호
  • /
  • Pages.628-633
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  • 2009
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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흡음재가 조합된 헬름홀츠 공명기의 흡음성능에 관한 연구

A Study on the Sound Absorption Performance of a Helmholtz Resonator Combined with Porous Materials

  • 이동훈 (서울산업대학교 기계공학과/에너지환경대학원) ;
  • 송화영 (서울산업대학교 에너지환경대학원 에너지시스템공학과)
  • 발행 : 2009.06.20
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초록

The helmholtz resonator with the perforated neck has demerits that the absorption performance is not so outstanding in an anti-resonance frequency and high frequency bandwidth. In order to overcome these problems, in the paper, a resonator combined with porous material is proposed. The absorption performances of resonators are measured by two-microphone method and estimated by transfer matrix method. The experimentally measured values of normal absorption coefficients agree well with the corresponding values from the transfer matrix method. Because of the porous material, it is shown that the absorption performance have been significantly improved in the anti-resonance frequency and high frequency bandwidth.

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참고문헌

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