Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Long Range Ultrasonic Guided Wave Techniques for Inspection of Pipes

유도초음파를 이용한 장거리 배관 탐상기법

  • 박익근 (서울산업대학교 기계공학과) ;
  • 김용권 (서울산업대학교 에너지환경대학원 에너지시스템공학과) ;
  • 김현묵 (한양대학교 대학원) ;
  • 송원준 (포항산업과학연구원) ;
  • 조용상 (한국전력 전력연구원) ;
  • 안연식 (한국전력 전력연구원)
  • Published : 2005.10.01
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Abstract

Conventional non-destructive techniques for inspection of the weld in pipelines require significant test time and high cost. Ultrasonic guided waves have been widely studied and successfully applied to various non-destructive tests with advantage of the long-range inspection. In this paper, a study on the application of ultrasonic guided waves to the long-range inspection of the pipeline is presented using a long-range guided wave inspection system, Wavemaker SE16, GUL. The characteristics and setup of the long-range guided wave inspection system and experimental results in pipes of with various diameter are introduced. The experimental results in mock-up pipes with cluster type detects show that the minimum detectable wall thickness reduction with this guided wave system is $2\~3\%$ in the pipe cross section area. And the wall thickness reduction of $5\%$ in cross section area can be detected when actual detection level is used. Therefore, the applicability of the guided wave systeme to long-range inspection of wall thickness reduction in pipes is verified.

Keywords

References

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