Journal of the Korean Society of Safety (한국안전학회지)
- Volume 14 Issue 3
- /
- Pages.25-32
- /
- 1999
- /
- 1738-3803(pISSN)
- /
- 2383-9953(eISSN)
The Effects of Stress Fields on Behavior of Primary Cracks Initiated at Micro Surface Defects
미소 표면 결함에서 발생하는 초기 균열의 거동에 미치는 응력장의 영향
Abstract
This study has been performed to investigate the stress distribution around defects that behave as stress concentrators. Besides, the effect of stress interaction effects on the initiation of primary cracks were also investigated by rotary bending fatigue tests which were performed with specimens drilled micro surface defects and the stress distribution was analyzed using Finite Element Method. In addition, the stress interaction effects around defects and cracks were investigated by comparing the results of experiments and F.E.M. The results obtained are summarized as follows ; 1) Area which slip and micro cracks initiated at micro surface defects is between the maximum shear stress points and this area is over than
Keywords