In a uniform diameter $($no stress concentration features$)$ steel rod subject to transverse loading

$($bending$),$ the stress at a critical point is found to vary between $50$ kpsi and $40$ kpsi $.$ The

ultimate strength and the yield strength of the steel are $S_{ut}=120k$ and $S_y=100k.$ The

rod is designed for infinite life. The fully corrected endurance limit is found to be $S_e=50$

kpsi. For a safety factor of $n=2\mathrm{.}0,$ plot the Goodman and Soderberg criteria on the graph

provided $($see page $2).$ Plot the stress at the critical point and predict if the desired safety factor

is achieved.

Is the safety factor achieved according to Goodman criteria

Is the safety factor achieved according to Soderberg criteria