Mixed-mode , high-cycle fatigue-crack growth thresholds in Ti ± 6 Al ± 4 V II . Quanti ® cation of crack-tip shielding

@inproceedings{Campbell2000MixedmodeH,
  title={Mixed-mode , high-cycle fatigue-crack growth thresholds in Ti ± 6 Al ± 4 V II . Quanti ® cation of crack-tip shielding},
  author={Jason P. Campbell and Robert O Ritchie},
  year={2000}
}
The role of crack-tip shielding in in ̄uencing mixed-mode (mode I‡ II) fatigue-crack growth thresholds for large, through-thickness cracks in a Ti±6Al±4V turbine blade alloy is examined under high-cycle fatigue loading conditions, i.e., at a loading frequency of 1000 Hz in ambient temperature air for load ratios (Kmin=Kmax) of R ˆ 0:1±0.8. Techniques are developed to quantify crack-tip shielding with respect to both the mode I and mode II applied loading, enabling an estimation of the shielding… CONTINUE READING