A 4142 steel Q&T at 80F exhibits Syt = 235 kpsi, Syc = 275 kpsi, and f

Question:

A 4142 steel Q&T at 80◦F exhibits Syt = 235 kpsi, Syc = 275 kpsi, and εf = 0.06. Choose and plot the failure locus and, for the static stresses at the critical locations, which are 10 times those in Prob. 5–9, plot the load lines and estimate the factors of safety analytically and graphically.