(Solved): In the figure shown, shaft A, made of AISI 1020 hot-rolled steel, is welded to a fixed support and ...

In the figure shown, shaft A, made of AISI 1020 hot-rolled steel, is welded to a fixed support and is subjected to loading by equal and opposite forces Fvia shaft \( B \). A theoretical stress-concentration factor \( K_{t s} \) of \( 1.6 \) is induced in the shaft by the \( 1 / 8 \)-in weld fillet. The length of shaft \( A \) from the fixed support to the connection at shaft \( B \) is \( 2 \mathrm{ft} \). The load \( F \) cycles from 225 to \( 300 \mathrm{lbf} \). Determine the endurance limit for this material as well as the value after correction for surface finish, sizing, an loading. The endurance limit for the material is \( k p s i \). The endurance limit for the material after correction for surface finish, sizing, and loading is kpsi.