THERMOELASTIC PROPERTIES OF COMPOSITES WITH SHORT COATED FIBERS

The effective thermoelastic properties of composites with coated short fibers are derived in this work. Under the assumption of thin coating, the stress field of the coated layer remains uniform across the thickness of the layer but otherwise possessing 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 Mori-Tanaka's scheme and the modified Walpole method. Numerical comparisons to existing results for long coated fibers are made. In addition, a parametric study is also included.