Plasticity and asperity-induced fatigue crack closure under mixed-mode loading

@inproceedings{Doquet2010PlasticityAA,
  title={Plasticity and asperity-induced fatigue crack closure under mixed-mode loading},
  author={V{\'e}ronique Doquet and Quốc Hưng B{\`u}i and A. Constantinescu},
  year={2010}
}
Plasticity and asperity-induced crack closure under mixed-mode non-proportional loading are investigated, using numerical models. It is shown that the applied mode II can either increase or decrease the effective DKI, depending on the R ratio and loading path. In some cases, mode II is found to have opposite effects on each of the two closure mechanisms. These results are coherent with some crack-length or roughness-dependent variations in mode I fatigue crack growth rate due to the presence of… CONTINUE READING