Problem 1 (20 pts):

If you are given the fiber and matrix properties below and are asked to estimate the composite

elastic constants (Moduli E₁, E2, G₁2 and Poisson's ratio V12) and directional strength (X₁, Xe,

Yı, Ye and S).

Continuous long fiber reinforcement: Er = 400 GPa; v=0.4; or=3 GPa;

Epoxy matrix: Em=3 GPa; vm -0.3; Gm= 80 MPa ; Tm = 60 MPa;

Fiber volume fraction: V₁ = 60%

Please give your estimate and specify the micromechanics equations you use for the estimate

(if you use computer programs your solution must include code and outputs).