Question: Problem 4. Consider the longitudinal elastic modulus of a multi-component composite in which several types of fibers are embedded in an epoxy matrix. Calculate the

Problem 4. Consider the longitudinal elastic modulus of a multi-component composite in which several types of fibers are embedded in an epoxy matrix.

Problem 4. Consider the longitudinal elastic modulus of a multi-component composite in which several types of fibers are embedded in an epoxy matrix. Calculate the longitudinal elastic modulus of carbon fibers/Kevlar fibers/glass fibers/epoxy matrix composite, if 10kg of this composite contains 5kg of carbon fibers, 1kg of Kevlar fibers, 1kg of glass fibers and 3kg epoxy. \begin{tabular}{|l|cccc|} \hline Material & E[GPa] & [/] & [g/cm3] & u[MPa] \\ \hline Epoxy matrix & 3.5 & 0.34 & 1.2 & 52.5 \\ Glass fiber & 70 & 0.21 & 2.5 & 700 \\ Carbon fiber & 350 & 0.21 & 1.8 & 700 \\ Kevlar fiber & 147 & 0.23 & 1.5 & 1300 \\ Boron fiber & 390 & 0.22 & 2.63 & 2800 \\ \hline \end{tabular}

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