Journal of the Korean Society of Safety (한국안전학회지)
- Volume 8 Issue 4
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- Pages.41-46
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- 1993
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- 1738-3803(pISSN)
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- 2383-9953(eISSN)
A Study on the Effect and Formation of Shear Lip for Al 2024-T3 Materials
Al 2024-T3재에 있어서 Shear Lip의 생성과 그 영향에 관한 연구
Abstract
This Paper aims to examine the effect of shear lip formation from cross-sections on fatigue crack propagation rate in order to study the fatigue fracture behavior of the high strength aluminum material (Al 2024-T3). The following tests were achieved from this research. 1. As a result of depressing shear lip artificially by adding a side groove to a specimen, it is shown that the propagation rate of fatigue crack is faster than that of general specimen. 2. Through the two-step load test, the phenomenon that the shear lip decreases In the part of changed load gets observed. Consequently It Is shown that the crack propagation rate gets faster.
Keywords