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음향 영상화기법을 이용한 발전용 밸브 유체누설평가 연구

A Study on the Fluid Leakage Evaluation for Power Plant Valve Using Acoustic Imaging Technique

  • 이상국 (한국전력공사 전력연구원 원자력발전연구소) ;
  • 이선기 (한국전력공사 전력연구원 원자력발전연구소) ;
  • 김대웅 (한국전력공사 전력연구원 원자력발전연구소)
  • 투고 : 2010.05.09
  • 심사 : 2010.07.15
  • 발행 : 2011.02.28

초록

Image processing has provided powerful techniques to extract from the acoustic signals the desired information on evaluation for leakage existence, leakage rate, and searching for leakage location, etc. The imagery NDE data available can add additional and significant dimension in nondestructive evaluation(NDE) information and thus for exploiting in applications. To extract such information the use of advanced image processing techniques is much needed. In recent years, there has been much increased use of acoustic signal image processing techniques in acoustic NDE. This approach will increase the efficiency of inspection procedures and reduce inspection time. In this paper we are concerned only with This paper is concerned mainly with the use of advanced image processing techniques in valve leakage detection and advanced image restoration and enhancement methods, which attempt to evaluate promptly by a visualization method the acoustic sources while detecting the valve leakage.

키워드

참고문헌

  1. Sang-Guk Lee, 2004, "Nondestructive Testing and Applications for Electric Power Plant Equipments by Acoustic Emission Technology", Journal of the Korean Society for Nondestructive Testing, Vol. 24, No.4, pp. 396-409
  2. Allen, J. W., Hartman, W. F. and Robinson, J. C., 1988, "Acoustic Monitoring of Power Plant Valves", EPRI NP-2444, pp. 22-30.
  3. Sang-Guk Lee, Dae-Woong Kim, Yang-Seok Kim and Hun Jeong, 2009, "Study on Statistical Analysis of Measured Fluid Leakage Data and Estimation of the Leakage Rate for Power Plant Valve", Journal of the Korean Society for Power System Engineering, Vol. 13, No.5, pp. 59-66.
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