The rectangular section beam in Figure P14.19 is made of an aluminum alloy (E = 72.0 GPa)....

The rectangular section beam in Figure P14.19 is made of an aluminum alloy (E = 72.0 GPa). Strain gages are used to determine the stress concentration factor for the grooves. One strain gage is located at the bottom of the groove and another strain gage is located some distance from the stress concentration as shown. Strain-gage readings at the groove and away from the stress concentration were recorded as 0.00250 and 0.00100, respectively. Determine the magnitudes of P and the stress concentration factor Scc.

FIGURE P14.19