b) A continuous and aligned carbon fiber-reinforced composites consists of 40 vol% of carbon fiber having modulus of elasticity of 69 GPa and 60 vol% of a polyester resin that when hardened displays a modulus of 3.4 GPa. (i) Compute the modulus of elasticity of the composite in the longitudinal direction. (ii) If the cross-sectional area is 250 mm? and a stress of 50 MPa is applied in this longitudinal direction, compute the magnitude of the load carried by each of the fiber and matrix phases. (iii) Determine the strain that is sustained by each phase when the stress in part (ii) is applied.

Question: A cylindrical rod of 1040 steel originally 11.4 mm (0.45 in.) in diameter is to be cold worked by drawing;  the circular cross section will be maintained during deformation.  A cold-worked tensile strength in excess of 825 MPa (120,000 psi) and a ductility of at least 12%EL are desired.  Furthermore, the final diameter must be 8.9 mm (0.35 in.).  Explain how this may be accomplished.

5. The resistance of a material to force which is tending to deform or fail by crushing. a. Parent metal b. Physical property c. Compressive strength d. Elongation