“…To model the effect of structural defects on the fatigue performance of metals, two main approaches have been taken by researchers in the literature: (1) taking the entire pore size distribution into account [8,13,14] or (2) modeling the distribution of the largest defects or inclusions [4,15,16] that initiate fracture. For instance, the model of Yi et al [8,9] 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.…”