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

  • 제23권3호
  • /
  • Pages.282-290
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  • 2013
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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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Sludge Detection Inside Pipes Using Torsional Guided Waves

  • Park, Kyung-Jo (Dept. of Mechanical Design Engineering at Chonnam National University) ;
  • Kim, Chung-Yup (Dept. of Mechanical Design Engineering at Chonnam National University)
  • 투고 : 2013.01.17
  • 심사 : 2013.02.26
  • 발행 : 2013.03.20
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초록

A new method is presented that uses guided wave techniques for sludge and blockages detection in long-range pipelines. Existing techniques have the limitations that the sludge position needs to be known a priori and the area to be inspected needs to be accessible. Two guided wave techniques have been developed which allow the sludge or blockages to be detected remotely without the need to access the specific location where the pipe is blocked, nor to open the pipe. The first technique measures the reflection of guided waves by sludge which can be used to accurately locate the blocked region; the second technique detects sludge by revealing the changes to the transmitted guided waves propagating in the blocked region or after it. The two techniques complement each other and their combination leads to a reliable sludge or blockage detection. Various types of realistic sludge have been considered in the study and the practical capabilities of the two techniques have been demonstrated.

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참고문헌

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피인용 문헌

  1. Mode Separation in Torsional Guided Waves Using Chirplet Transform vol.24, pp.4, 2014, https://doi.org/10.5050/KSNVE.2014.24.4.324