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nature : materials or components in the continuing changes in load under the cracks until the failure or rupture of the phenomenon known as fatigue. No matter how plastic materials, fatigue fracture is not obvious at the macro-plastic deformation, similar to brittle fracture. Project structure and common parts failure and serious form of fatigue fracture. This fracture is likely to result in catastrophic incidents, such as plane crashes, the collapse of a bridge, pressure vessel bursting.
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