Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Leak Detection Technique of Pressure Vessel Using Acoustic Emission Signal

음향방출 신호를 이용한 압력용기의 누설 검사기법 개발

  • 이성재 (부산대학교 대학원 정밀기계공학과) ;
  • 정연식 (부산대학교 대학원 정밀기계공학) ;
  • 강명창 (부산대학교 정밀정형 및 금형가공 연구) ;
  • 김정석 (부산대학교 기계공학부)
  • Published : 2004.08.01
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Abstract

In this study, the leak detection technique of pressure vessel by using acoustic emission(AE) signal is suggested experimentally. The leak of pressure vessel is located at the welding line due to welding defects. we measured the AE signal using Rl5I sensor, and examined the AE parameters in leak condition. It is investigated that the mean value of AE signal is dependent on leak source location. So the absolute mean value of AE signal is adopted as dominant AE parameter. We proposed leak detection algorithm using AE signal mean value for monitoring the leak source location.

Keywords

References

  1. Chemical Engineering Progress(CEP) v.84 no.9 Acoustic Emission Testing of Vessel Fouler, T. J.
  2. ASME v.121 Prediction of Failure Behavior of a welded Pressure Vessel Containing Flaws During a Hydrogen-Charged Burst Test Bhuyan, G. S.;Sperling, B. J.;Shen, G.
  3. Journal of Materials Science & Engineering v.A265 One sensor linear location of acoustic emission using plate wave theories Surgeon, M.;Wevers, M.
  4. Journal of Ultrasonics v.18 Effects of Wave Attenuation on the Acoustic Emission Amplitude Distribution of Injection-Molded Fiber/Plastic Composites Choi, N. S.;Takahashi, K.
  5. Journal of Engineering Mechanics Acoustic Emission Source Location Using Lamb Wave Modes Maji, A. K.;Kratochvil, T.
  6. Journal of Ultrasonics v.36 Use of an automatic modeled and a small receiver array for acoustic emission (AF) source location Lu, X.;Grabec, I.