Journal of Industrial Technology (산업기술연구)
- Volume 19
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- Pages.197-208
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- 1999
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- 1229-9588(pISSN)
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- 1598-1371(eISSN)
A Study on the Determination of Source Location in the Failure for Brittle Material
취성재료의 파괴과정에서 A.E.에 의한 파괴원 위치 결정에 관한 연구
- Published : 1999.12.31
Abstract
The process of localization of cracks and movement of the fracture process zone(FPZ) was studied using the acoustic-emission(AE) techniques. The rate of AE events and sources of AE activity were studied for mortar and rock specimens loaded in uniaxial compression. A series of transducers could be used to detect and AE activity. Based on the time differences between detection of the event at different transducers, source of AE activity could be detected. The rate of AE events increased sharply before peak load. The highest rate occurred just after peak load was attained. The effective crack length estimated from the modified linear-elastic fracture mechanics seemed consistent with the optical and AE measurements.
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