In an aligned and continuous carbon fiber–reinforced nylon 6,6 composite, the fibers are to carry 97% of a load applied in the longitudinal direction.
(a) Using the data provided, determine the volume fraction of fibers required.
(b) What is the tensile strength of this composite? Assume that the matrix stress at fiber failure is 50 MPa (7250 psi).
| Modulus of Elasticity [GPa (psi)] | Tensile Strength [MPa (psi)] |
Carbon fiber | 260 (37 × 106) | 4000 (580,000) |
Nylon 6,6 | 2.8 (4.0 × 105) | 76 (11,000) |
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