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Synopsis : A lamination tailoring technique is proposed in order to control a coefficient of thermal expansion (CTE) of carbon/epoxy composites in a principal direction. This technique consists of two concepts of the thermoelastic invariants and the lamination parameters. The expansion free condition yields to a parabola in the feasible region of the lamination parameters. The calculated curves for a wide range of temperature intersect almost at a point. A laminate with the construction corresponding to this point exhibits a null CTE in one direction in that temperature range. Some experimental results indicate that the present procedure is possible and promising. Controlling to a small negative CTE to cancel an extension of metal part is also feasible.

Design Method of Composite Laminates with a Controlled Coefficient of Thermal Expansion