Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Attenuation Characteristics of the Buried Steel Water Pipes

지하매설 유체함입 강파이프의 감쇠특성 규명

  • 박경조 (전남대학교 기계자동차공학부) ;
  • 강우석 (전남대학교 기계자동차공학부) ;
  • 김이곤 (전남대학교 전기.전자통신.컴퓨터공학부)
  • Published : 2009.02.28
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Abstract

The attenuation of the fundamental non-torsional modes that propagate down buried steel water pipes has been studied. The mode shapes, mode attenuation due to leakage into the surrounding medium and the scattering of the modes as they interact with pipe joints and fittings have been investigated. In the low frequency region the mode predicted to dominate over significant propagation distances approximates a plane wave in the water within pipe. The established acoustic technique used to locate leaks in buried steel water pipes assumes that leak noise propagates as a single non-dispersive mode at a velocity related to the low frequency asymptote of this water borne mode.

Keywords

References

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