A continuous and aligned fiber–reinforced composite is to be produced consisting of 30 vol% aramid fibers and 70 vol% polycarbonate matrix; the mechanical characteristics of these two materials are as follows:
| Modulus of Elasticity [GPa (psi)] | Tensile Strength [MPa (psi)] |
Aramid fiber | 131 (19 × 106) | 3600 (520,000) |
Polycarbonate | 2.4 (3.5 × 105) | 65 (9425) |
The stress on the polycarbonate matrix when the aramid fibers fail is 45 MPa (6500 psi).
For this composite, compute the following:
(a) The longitudinal tensile strength
(b) The longitudinal modulus of elasticity
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