Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Feasibility Study of Sludge Detection inside Pipes Using Torsional Guided Waves

비틀림 유도파를 이용한 배관 슬러지 검출 방법의 현장 적용성 평가

  • Park, Kyung-Jo (Department of Mechanical Design Engineering, Chonnam National University)
  • 박경조 (전남대학교 기계설계공학부)
  • Received : 2014.06.17
  • Accepted : 2014.08.20
  • Published : 2014.10.31
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Abstract

It has been previously reported that in principle sludge and blockages can be detected and even characterized by using guided ultrasonic torsional waves, based on an idealized model in which the sludge layer was simplified in terms of geometry and material properties. The work revealed that the presence of a layer inside a pipe scatters the guided wave propagating in the pipe and both the reflection and transmission of the guided wave can be used to effectively detect and characterize the layer. This paper proceeds the work by taking into account more realistic sludge characteristics, including irregular circumferential profiles of the sludge layer and imperfect bonding state between the sludge and the pipe. The influence of these issues is investigated to identify the critical factors that influence the detection and characterization capability of the two measurements.

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References

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