(b) Problem-2 A cantilever beam made of cold drawn steel 20C8 (Sut = 540 N/mm2) is subjected to a completely reversed load of 1000 N as shown. The notch sensitivity factor q at the fillet can be taken as 0.85 and the expected reliability is 90%. Determine the diameter d of the beam for a life of 10000 cycles. Take Kb = 0.85 170- -150 P= ± 1000 N 1.5d 0.25d