Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)
- Volume 21 Issue 3
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- Pages.277-280
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- 2001
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- 1225-7842(pISSN)
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- 2287-402X(eISSN)
AE Source Location of Unidirectional GFRP
일방성 GFRP 복합재료에서 음향방출 신호의 위치표정
-
Lee, Jong-O
(Korea Institute of Machinery & Materials) ;
-
Won, Soon-Ho
(Korea Institute of Machinery & Materials) ;
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Yoon, Woon-Ha
(Korea Institute of Machinery & Materials) ;
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Lee, Jong-Kyu
;
- So, Cheal-Ho
- Published : 2001.06.30
Abstract
General source location method that use an arrival time differences among sensors is restricted to the composite material and the complex-shaped material. In this study, a bundle-type acoustic sensor composed of 6 pinducers was utilized to determine wave propagation direction and then to estimate source location of the unidirectional GFRP. For the purpose of the study, slowness curve for the material was obtained and made an assumption that the incident waves on pinducers are propagated as a plane wave. According to the results, measured propagation directions of the wave were coincide with theoretical background, however, it was a hassle to determine the source location exactly. But, it is expected that bundle-type sensor gives more accurate results for zone location than generally used acoustic sensors.
Keywords