음향방출 신호원의 위치추정 기법

Prediction technology on the source location of acoustic emission signal

  • 이성재 (부산대학교 정밀기계공학과) ;
  • 김정석 (부산대학교 기계공학부) ;
  • 강명창 (부산대학교 기계공학부) ;
  • 정연식 (부산대학교 대학원 정밀기계공학과) ;
  • 정규동 ((주) 고려제강)
  • 발행 : 2003.04.01

초록

This study deals with the source location method of defect which can be occurred in structure. The existing methods was very difficult to be applied to predict it because of using very complex numerical formula. The triangulation method which was proposed in his study can predict the source location predicted easily with small amount of data. Wave arrival time data can be directly converted into source-sensor distance is known. For this purpose, the propagation velocity was measured by Rayleigh wave, and the propagation behavior was analyzed. For the consideration of jointed part in structure, the source location method was applied to the welded workpiece. The signal propagation velocity was measured in welding part for the purpose of application to the part and the revised algorithm of source location was proposed.

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