“…To model the effect of structural defects on the fatigue performance of metals, two main approaches have been taken by researchers in the literature: (i) taking the entire pore size dis- tribution into account [6,10,11], or (ii) modeling the distribution of largest defects and/or inclusions [3,12,13] that initiate fracture. For instance, the model of Yi et al [6,7] assumes that pore size follows the lognormal distribution, which is consistent with their histograms as well as statistical analysis of pore sizes for Mg alloy castings [8].…”