A carbon$/$epoxy composite with the stacking arrangement $[0/$e$30/30]$ s $,$

has the properties listed below. Determine the value of in$-$plane stress s x

which would cause failure according to the $($a$)$ Maximum Strain $($b$)$ Maximum Stress and $($c$)$ Tsai e Hill criteria.

E $1130$ GPa; E $28$:$8$ GPa; G $126$:$9$ GPa; n $120$:$3$

bs $1$T $1$:$9$ GPa; bs $2$T $0$:$038$ GPa; bs $1$C $1$:$7$ GPa

bs x $0$:$2$ GPa; bs $120$:$09$ GPa The thickness of each ply is $0\mathrm{.}2$ mm$.$