Question

A composite is made of 60% by volume C-glass fibers aligned in epoxy. On page 407 of the text, it is identified that when the material is subject to force along the axis of the fibers, the material undergoes isotress loading and the modulus is given by Equation 12.13. When subject to forces at right angles to the fibers, the material is subject to isostress loading, which has a modulus Ec = Em Ef /( vmEf + vfEm ) . What would the two moduli of this material be for forces parallel and at right angles to the fibers? What would this mean to the material's ability to resist tension loads without deformation in the two directions? [MO4.10]

Answer 1