What Is a Fatigue Fracture?

Fatigue fracture refers to fracture that is caused by the occurrence of cracks in the localized stress concentration or low strength first, and the cracks subsequently expand. [1]

Fatigue fracture
Condition: beyond material
conventional
The following two pictures are the fracture morphology
Fatigue fracture under eccentric rotating bending load
Fatigue fracture under bidirectional bending load

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