비파괴검사학회지 (Journal of the Korean Society for Nondestructive Testing)
- 제10권1호
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- Pages.84-90
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- 1990
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- 1225-7842(pISSN)
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- 2287-402X(eISSN)
실린더형 용기에서의 신호전파경로 비교를 이용한 음향방출 위치표정
AE Source Location by the Discrimination of Wave Propagation Paths in Cylindrical Vessels
- 발행 : 1990.05.30
초록
By discriminating the wave propagation paths in cylindrical vessels, a technique for AE source location has been proposed. This method is based on the path difference between several propagating directions from a source to a sensor. One sensor can receive multiple waveforms sequentially including a direct arrival and several others propagated through the circumferential direction. An wave front normally propagates in all directions and as many waveforms can reach the sensor until the signal faded out by attenuation. Only the first four arrivals suffice the condition for calculating the source location. The proposed method was examined for an actual cylindrical vessel by the source location experiment using simulated AE sources. The test showed very promising results and the method can be utilized for a simple AE source location without multi-channel instruments.
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