applied fracture mechanics

Fracture Mechanics Analysis ofFretting Fatigue Considering Small Crack Effects, Mixed Mode, and Mean Stress Effect 183Higher mean stress leads to smaller aeq at the fatigue limit under PCUnder LC, the relations of σa-aeq are almost the same under various contact pressuresand mean stressesFigure 8. (a) Example of non-propagating crack and (b) aspect ratio of non-propagating cracksFigure 9. Non-propagating crack depth obtained from fretting fatigue tests: (a) PC, (b) LC (sample A),and (c) LC (sample B)