小穴をもつ調質鋼平滑材の腐食疲労強度

概要

論文の詳細を見る
It is important to estimate the effect of small surface defects on the fatigue strength. Therefore, many studies concerning the surface defects have been performed especially in air. For the corrosive environment, however, there have been few studies. In the present study, rotating bending fatigue tests of smooth specimens having different sizes of a small blind hole were carried out in 3% NaCl solution. Successive observations of the surface were made by the plastic replica method to clarify the generation behavior of the corrosion pit and the initiation behavior of a crack. The crack propagation behavior was investigated based on the dl/dN versus l relation. The dl/dN versus l relation indicates that the growth rates of cracks having the same length but different histories are not necessarily equal.
社団法人日本機械学会の論文
1994-06-25