Analysis of the influence of stress gradient on the non-propagating fatigue crack

【Author】

Hao Wu;

【Abstract】

<正>A mechanism for the formation of non-propagating fatigue cracks ahead of a notch root is presented.The stress gradients near the elongated notch root along with the propagation of short crack and the resulting non-propagating crack lengths a_(npc) are estimated. The local stress which is higher than the unnotched material fatigue limit S_0 initiates the crack from a notch root and local

【Keywords】

root;Analysis of the influence of stress gradient on the non-propagating fatigue crack;than;very;

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