Improved Test Method for Very Low Fatigue-Crack-Growth-Rate Data

@inproceedings{Newman2008ImprovedTM,
  title={Improved Test Method for Very Low Fatigue-Crack-Growth-Rate Data},
  author={Newman and James and Ruschau and John},
  year={2008}
}
Currently, in North America, the threshold crack-growth regime is experimentally defined by using ASTM Standard E647, which has been shown in many cases to exhibit anomalies due to the load-reduction (LR) test method. The test method has been shown to induce remote closure, which prematurely slows down crack growth and produces an abnormally high threshold. In this paper, the fatigue-crack growth rate properties in the threshold and near-threshold regimes for a titanium alloy, Ti-6Al-4V (STOA… CONTINUE READING