Thermoelastic properties of short-coated fiber composites: Effects of length and orientation distributions

The effective thermoelastic properties of composites reinforced with short-coated fibers whose orientations and aspect ratios are varied have been formulated. Under the assumption of thin coating, the stress field of the coated layer remains uniform across the thickness of the layer but otherwise possesses variation along other directions and can be found in terms of the stress field of the fiber and the direction cosines through the use of the interface jump condition between the coating and the fiber. The effective thermoelastic properties are then derived based on the Mori-Tanaka scheme and the modified Walpole method. Numerical examples including some parametric studies are also included.