%0 Journal Article %J International Journal of Fatigue %D 2021 %T A review of effective-strain based and multi R-ratio crack propagation models and a comparison of simulated results using the two approaches %A Liang, W %A Conle, FA %A Topper, TH %A Walbridge, S %B International Journal of Fatigue %I Elsevier %V 142 %P 105920 %G eng