Design a composite material made of epoxy and uniaxial E-glass fibers that has an axial thermal conductivity of 8 Wm-1 K-1 . The thermal conductivity of E-glass is 13 Wm-1 K-1 , and for epoxy it is 0.1 Wm-1 K-1 .
(a) What is the volume fraction of fibers and matrix in this composite?
(b) What is the transverse thermal conductivity of this material?
(a) For the parallel direction the thermal conductivity is given by the rule of mixtures.
(b) For the transverse direction to the fiber axis the thermal conductivity is given by an equation of the form of Equation 12.13.
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