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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Acoustic Wave Propagation Characteristics Corresponding to the Cut-off Frequency in Gas Pipeline

가스 배관의 차단 주파수에 따른 음파전달특성 연구

  • 김민수 (인하대학교 기계공학과) ;
  • 이상권 (인하대학교 기계공학과) ;
  • 장상엽 (한국가스공사 연구개발원) ;
  • 고재필 (한국가스공사 연구개발원)
  • Published : 2008.07.20
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Abstract

High-Pressure gas Pipeline which is buried in underground has the Possibility that will be exposed to unexpected dangerous impact of construction equipment. To protect from this kind of danger, the real-time health monitoring system of the high-pressure gas pipeline is necessary. First of all, to make the real-time health monitoring system clearly, the acoustic wave propagation characteristics which are made from various construction equipment impacts must be identified. In link of technical development that prevents the damage of high-pressure gas pipeline, this paper gives FEM(finite element method) and BEM(boundary element method) solutions to identify the acoustic wave propagation characteristic of the various impact input signals which consist of Direc delta function and convolution signal of 45 Hz square signal and random signal.

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References

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  2. Gas Leakage in Buried Gas Pipe Based on Wavelet Analysis for Vibro-Coustic Signal in a Long Duct vol.22, pp.5, 2011, https://doi.org/10.1177/1045389X10386131
  3. Identification of the Impact Location in a Gas Duct System Based on Acoustic Wave Theory and the Time Frequency vol.51, pp.6, 2011, https://doi.org/10.1007/s11340-010-9382-y