Load Interaction Effects on Fatigue Crack Growth in A514F Steel Alloy PDF Download

Author: RW. Hertzberg
Publisher:
ISBN:
Category : Closures
Languages : en
Pages : 17

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Book Description
Variable-amplitude fatigue tests of A514F steel alloy were performed within a linear-elastic fracture mechanics framework in order to characterize the retardation response of a cyclic strain softening material. Results of single and multiple overload tests on A514F steel alloy suggested that a material's cyclic properties have little effect on the phenomenology of retardation behavior. For instance, single high load excursions (of different magnitudes and at different baseline ?K levels) in this cyclic strain softening alloy caused fatigue crack growth rate retardation trends comparable to those exhibited by 2024-T3 aluminum, a cyclic strain hardening alloy. In addition, under complex loading conditions, the A514F steel alloy, like the 2024-T3 aluminum alloy, exhibited maximum interaction between single peak load excursions when two peak cycles were separated by a small distance.