Problem $2$ continued

$($d$)$ At the moment of fracture, what was the final length of the specimen if the initial length was $50$ mm $?(1$ point$)$

$($a$)$ This titanium specimen was deformed in tension. The specimen failed at the point marked $\backslash ($ X $\backslash ).$ Is this an engineering stress$-$strain curve or a true stress$-$strain curve? How do you know? $(1$ point$)$

$($b$)$ Approximate the maximum load in Newtons that this specimen sustained if the initial crosssectional area was $\backslash (10\backslash$mathrm$\{$~mm$\}^\{2\}\backslash ).(1$ point$)$

$($c$)$ Approximate the true stress that corresponds to the ultimate tensile strength. $(1$ point$)$

$($e$)$ Using the magnification of the elastic region shown below, approximate the elastic modulus. $(1$ poi$-^$

$($f$)$ Define modulus of elasticity in words. $(1$ point$)$

Problem $2$ continued

$($h$)$ Define yield stress in words. $(1$ point$)$

$($i$)$ Calculate the total elongation $\backslash (\backslash$Delta l $\backslash )$ of the specimen when subjected to $200$ MPa if the initial length was $50$ mm $.$ You will need to use the elastic modulus computed in part e$).(1$ point$)$

$($j$)$ What is the amount of plastic strain at failure sustained by this specimen? $(1$ point$)$

$($k$)$ Compute the percent elongation of the sample. You will need to use the final length of the specimen computed in part d$).(1$ point$)$

Do all parts please!