A crankshaft has a fillet and minimum diameter of 30 mm. Its critical section is subjected...

A crankshaft has a fillet and minimum diameter of 30 mm. Its critical section is subjected to a bending moment M = 200P and a torque T = 180/5, where P is a completely reversed load. The calculated stress concentrations for the fillet are  for bending and  for torsion. The shaft is made of a stress-relieved cold-worked SAE 1060 steel (E = 200 GPa, v = 0.29, σu = 810 MPa, Y = 620 MPa, and σam = 410 MPa for 107 cycles). Determine the completely reversed load P that can be applied 107 times based on a factor of safety SF = 2.20. Assume q = 0.85.