1. Determine the longitudinal modulus E1 and longitudin

1. Determine the longitudinal modulus E1 and longitudinal tensile strength F1t of a unidirectional carbon/glass composite with the following properties: Vf = 0.45 E1f = 235 GPa Em = 70 GPa Fft = 2500 MPa Fmt = 140 MPa Note which phase fails first. Turn in hand calcs and commented MATLAB (or equivalent) code to perform calcs 2. The longitudinal strength of a unidirectional composite F1t must be higher than the net matrix strength ???? ?? ?????????? . In order for this to happen the fiber volume fraction must be higher than a certain value Vfcrit. Determine Vfcrit as a function of constituent properties Ef Em Fft and Fmt for both cases: ?????? ?? ?? ?????? ?? and ?????? ?? ?? ?????? ??
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