Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 7 Issue 4
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- Pages.130-139
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- 1990
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
On Fracture Mechanism of SK-5 Steel by AE Method
AE에 의한 SK-5강의 파괴기구 구명
- Published : 1990.12.01
Abstract
It is well known that mechanisms of fracture and crack growth depend upon material characteristics such as fracture toughness, environmental condition, crack geometry and mechanical properties. It seems to be very important to investighate the effects of the above factors on the behavior of structural components which contain flaws for the detailed evaluation of their integrity. In this experimental research, fracture behaviors of SK-5 high carbon steel was investigated by using Acoustic Emission(AE) technique. Fracturing processes of materials were estimated through both the tension test with nominal specimens and the fracture test with compact tension specimens. The critical applied load which corresponds to the crack initiation and propagation is very improtant for the determination of yield strength of fracture toughness. The critical applied load(
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