Crack Retardation byt Load Reduction During Fatigue Crack Propagation

피로균열전파 동안 하중감소에 의한 균열지연

  • Published : 2003.12.01


Fracture life and crack retardation behavior were examined experimentally using CT specimens of aluminum alloy 5083. Crack retardation life and fracture life were a wide difference. between 0.8 and 0.6 in proportion to ratio of load reduction. The wheeler model retardation parameter was used successfully to predict crack growth behavior. By using a crack propagation rule, prediction of fracture life can be evaluated quantitatively. A statistical approach based on Weibull distribution was applied to the test data to evaluate the dispersion in the retardation life and fracture life by the change of load reduction.


Crack Propagation;Load Reduction;Crack Retardation;Retardation Life;Fracture Life;Wheeler Model;Weibull Distribution;Statistical Nature


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