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- W2350871101 abstract "The fatigue crack propagation model with nine parameters proposed by authors can not only account for the effects of initial crack size and load sequence,but also explain various other phenomena of metal fatigue observed in tests[1].The model would be of great applicability.The parameters in the model can be determined through fitting the experimental data.The effect of the parameter reflecting crack closure development on the fatigue crack growth rate is studied in this paper through the nonlinear least squares fitting method.Results show that for macroscopic cracks the parameter reflecting crack closure development has little effect on the fatigue crack growth rate if the parameter exceeds a certain value.However,when the fatigue crack propagation is in the short crack region,the parameter has obvious effect on the fatigue crack growth rate.Hence,the value of the parameter reflecting crack closure development is mainly determined by the short crack experimental data.According to the fatigue experimental data of 0.45wt% carbon steel,the value of 6000m-1 is recommended for the corresponding parameter reflecting crack closure development." @default.
- W2350871101 created "2016-06-24" @default.
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- W2350871101 date "2008-01-01" @default.
- W2350871101 modified "2023-09-28" @default.
- W2350871101 title "Determination of the Parameter Reflecting Crack Closure Development in the Fatigue Crack Propagation Model" @default.
- W2350871101 hasPublicationYear "2008" @default.
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