Problem 1: 35 Points The constituent phases of a unidirectional carbon/epoxy composite have the properties shown below. Assume a volume fraction of fibers of 50% and a normal strain concentration factor of 4. Determine Ei, E2, G12, v12, Fit, Fic (shear mode microbuckling), and F2t for the composite. State any additional assumptions. Eir 85.5 GPa Fitf 4100 MPa E2f 85.5 GPa Ftm 138 MPa Em 5.2 GPa vi2f 0.2 G12r 35.6 GPa v12m 0.35 G12m 1.6 GPa
