Ashaft is loaded in bending and torsion such that ma 5 70 n ? m, ta 5 45 n ? m, mm 5 55 n ? m, and tm 5 35 n ? m. for the shaft, su 5 700 mpa and sy 5 560 mpa, and a fully corrected endurance limit of se 5 210 mpa is assumed. let kf 5 2.2 and kfs 5 1.8. with a design factor of 2.0 determine the minimum acceptable diameter of the shaft using the (a) de-gerber criterion. (b) de-asme elliptic criterion. (c) de-soderberg criterion. (d) de-goodman criterion. discuss and compare the results.