引張圧縮疲労強度に及ぼす残留応力場の影響 : 疲労き裂伝ぱ則による検討

概要

論文の詳細を見る
The fatigue lives of surface-hardened metals depend chiefly on a laminated inhomogeneity and a change of residual stress incidental to the surface micro-structural change. The effects of each factor on the fatigue lives, however, have not been stated quantitatively as yet, because it is difficult to separate these factors experimentally. In this paper, the steel specimens with longitudinal thermal residual stresses which are created by cooling in water from 873K temperature without martensitic transformation are prepared to examine effects of the only residual stress on fatigue crack initiation and propagation behaviors. The expression of fatigue life evaluation, proposed in a previous paper, is discussed in the light of the fatigue crack growth law and is used to estimate the fatigue lives of the specimens with and without residual stresses.
社団法人日本機械学会の論文
1986-08-25