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coaxing 효과가 피로한도에 미치는 영향에 관한 연구
이종형(Jung-Hyoung Lee),유덕상(Duck-Sang Yoo),송득중(Deuk-Chung Song) 한국산업융합학회 2002 한국산업융합학회 논문집 Vol.5 No.1
In the field of design of mechanical structure and expectation of life time, characteristic of fatigue limit comes out to he the most important problem. In this paper, in order to get fatigue limit, ( I ) investigate the aspects of economy, time and confidence comparing two methods: the method by fracture probability introducing statistical conception and the staircase method. And (Ⅱ) examine the experience approaching fatigue limit and coaxing effect. The value of fatigue limit by staircase method in very effective in view of practical use, and coaxing comes out by the same material effect as restraining crack progress, not as strengthening the tip of crack alone.<br/> <br/>