$*3-4.$ A tension test was performed on a steel specimen

having an original diameter of $0\mathrm{.}503$ in $.$ and gauge length

of $2\mathrm{.}00$ in$.$ The data is listed in the table. Plot the

stress$-$strain diagram and determine approximately the

modulus of elasticity, the yield stress, the ultimate stress,

and the rupture stress. Use a scale of $1in.=20$ksi and

$1in.=0\mathrm{.}05in\frac{.}{i}n.$ Redraw the elastic region, using the

same stress scale but a strain scale of $1in.=0\mathrm{.}001in\frac{.}{i}n.$

Prob. $3-4$

Sketch in excel or matlab. In the first plot, sketch the curve in the whole range of strain, one grid

of horizontal axis $=0\mathrm{.}05i\frac{n}{i}n$; In the second, just sketch the elastic range, one grid $=0\mathrm{.}001i\frac{n}{i}n.$