平面曲げ疲労における表面き裂形状と寿命に及ぼす板厚の影響

概要

論文の詳細を見る
The out-of-plane bending fatigue tests were performed for plate specimens with several different thicknesses. Then the effect of the plate thickness on aspect ratio of the surface crack and fatigue life for crack extension were analyzed through elastic fracture mechanics. The decrease in the aspect ratio with progress in crack extension process was successfully estimated by the proposed numerical calculation. Furthermore, the life calculations showed that the life required for the crack to extend up to a given crack length increased with decrease in plate thickness at a given stress, and such a thickness dependency of fatigue life appeared much more significantly in the extension process of the larger crack than in that of the smaller crack.
一般社団法人日本機械学会の論文
1995-05-25