A cantilever beam made of cold drawn carbon steel of circular cross-section as
shown in Fig. 6.18, is subjected to a load which varies
from – F to 3 F. Determine the maximum load that this
member can withstand for an indefinite life using a factor
of safety as 2. The theoretical stress concentration factor
is 1.42 and the notch sensitivity is 0.9. Assume the
following values :