On Three-Dimensional Fatigue Crack Propagation under Constant Amplitude Loading

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Abstract:

The equation of fatigue crack propagation rate is indispensable to precisely predict the fatigue life of structure containing three-dimensional crack under constant amplitude loading. Considering the crack closure effects and thickness effects in real structures, the equation of fatigue crack propagation rate under tri-axial stress state is presented. And the fatigue propagation lives of LY12-BCZYU aluminium alloy plate specimens with central through crack are predicted by this equation and validated by experimental results. Validation against calculations by the model and experimental data shows a good agreement.

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Periodical:

Advanced Materials Research (Volumes 97-101)

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852-855

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March 2010

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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