.... A plasticity-induced crack closure model, fatigue structural analysis (FASTRAN), was used to predict the fatigue life of the notched and unnotched specimens. The obtained results were also compared to the fatigue life and crack growth behavior of wrought Ti-6Al-4V. The experimental results indicated that crack...

...-threshold crack growth with and without crack closure. A key element of residual life estimates is consideration of sensitivity of threshold stress intensity range to load history in the absence of crack closure. The procedure was used to construct K-T diagrams for two aluminum alloys, a titanium alloy...

... crack-growth behavior. The materials considered herein are 2024-T3, 7075-T6, and 9310 steel. Crack-growth behavior during single-spike overloads and simulated aircraft spectrum loading are presented. The fatigue structural analysis (FASTRAN) crack-closure based life-prediction code was used to correlate...

... low-alloy steel. 17 07 2023 20 09 2023 06 11 2023 threshold stress intensity range intrinsic threshold stress intensity range crack closure near-tip residual stress constraint References Wohler   A. , “ Wohler’s Experiments on the Fatigue of Metals...

... growth equation with the analytical crack-closure model, include several model parameters that make calibration challenging. To simplify the calibration process and improve the accuracy of crack growth simulations, an automated crack growth model optimization tool was developed. This tool also aims...

... or a corner crack, to that of a linear crack to see if crack shape plays a role in physically small crack to long crack behavior. Recent research has unveiled a methodology to experimentally partition plasticity from roughness- and oxide-induced crack closure, showing that nonplasticity-induced closure...

... of the crack tip. Experimental results were compared to those provided by the analytical model proposed by Newman. 19 12 2015 13 07 2016 09 09 2016 low-cycle fatigue crack closure short-crack propagation digital image correlation crack-tip strains 2016-12-02 West Conshohocken...

...R. Sunder Threshold stress intensity, Δ K th , is not a material constant, but a variable that is extremely sensitive to load history. This effect has nothing to do with crack closure. It is associated with the influence of near-tip residual stress, σ *, on instantaneous resistance of crack tip...

... , 2012 , pp. 14 – 23 . https://doi.org/10.1016/j.ijfatigue.2011.03.004 Zhang , W. and Liu , Y. , “ In Situ SEM Testing for Crack Closure Investigation and Virtual Crack Annealing Model Development ,” Int. J. Fatigue , Vol. 43 , 2012 , pp. 188 – 196 . https://doi.org/10.1016...

... will be reviewed in this paper. It has been observed that for many engineering alloys, dynamic strain aging plays an important role in the temperature-dependent variations in deformation and fracture behavior, including the FCG parameters. Another important aspect in deciding the FCG behavior is the crack closure...