ABSTRACT
This chapter provides an introductory remark followed by a review of the basic micromechanics concepts. There are many micromechanics models in the literature. The chapter dwells on the formulations of some mechanics of materials-based models for the evaluation of lamina thermoelastic parameters. It briefs on the elasticity-based models and semiempirical models. A composite lamina is made up of two constituents—reinforcements and matrix. Micromechanics are the study in which the interaction of the reinforcements and the matrix is considered and their effect on the gross behavior of the lamina is determined. Toward this, one needs to determine several thermoelastic parameters of the lamina in terms of constituent properties. These parameters include elastic moduli, strength parameters, coefficients of thermal expansion (CTEs), and coefficients of moisture expansion (CMEs). The micromechanics models can be put into a simple classification as follows: Netting models; Mechanics of materials-based models; Elasticity-based models; and Semiempirical models.
