Abstract

In this work a model is developed to approximate the elastic response of a composite body reinforced by coated fibers oriented in various directions. The fundamental representative volume element is a three-phase concentric circular cylinder under prescribed displacement components. The microstress distribution inside the fiber, the coating, and the matrix has been determined under a uniform three-dimensional mechanical and/or hygrothermal loading. A parametric study has also been conducted to illustrate how a coating applied to the fiber influences the effective thermoelastic properties and can alter the state of stress at the fiber-matrix interface and thereby modify or control an observed mode of failure.

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