Review on Model of Fatigue Crack Propagation Rate for Metallic Materials Based on Different Driving Parameters
Fatigue crack propagation rate da/dN is an important mechanical index for damage tolerance design of metallic materials,and it does not directly rely on its driving parameter,which provides probability to characterize da/dN with different driving parameters.Some models of fatigue crack propagation rate based on different driving parameters and their applications were introduced.The driving parameters include stress intensity factor range △K,energy release rate range △G,J integration range △J,opening displacement range △δ,plastic area range △r at the crack tip and strain range△εTnear the crack front.The results provide references for selection of different driving parameters on study of fatigue crack propagation.
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