The fibers in a E-glass/epoxy composite are 0.0005 in. (0.0127 mm) in diameter before coating with an epoxy sizing 0.0001 in. (0.00254 mm) thick. After the sizing has been applied, the fibers are bonded together with more epoxy of the same type. What is the maximum fiber volume fraction that can be achieved? Using the fiber and matrix moduli given in Equation 3.33, determine the composite longitudinal modulus E1 and the composite transverse modulus E2 corresponding to the maximum fiber volume fraction.
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