Experimental investigation of the effects of artificial wedges on fatigue crack growth and crack closing behavior in annealed SAE1045 steel

@inproceedings{Okayasu2007ExperimentalIO,
  title={Experimental investigation of the effects of artificial wedges on fatigue crack growth and crack closing behavior in annealed SAE1045 steel},
  author={Mitsuhiro Okayasu and Zhirui Wang},
  year={2007}
}
Abstract To better understand the effect of asperity on the crack closure and fatigue crack growth behavior, the load–CMOD relations and crack propagation rate were examined through the addition of artificial wedges into pre-cracks. Experimental results revealed that the unloading phase of the load vs. CMOD curve exhibited always a concave shape, signifying the acceleration in the CMOD decrease. This was related to the plastic deformation in the wedge as well as in the specimen material… CONTINUE READING

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