This document discusses deriving the thermal coefficient for composite materials with stress applied in two different directions. It addresses deriving the thermal coefficient when stress is applied in the fiber direction of the composite material as well as when stress is applied perpendicular to the fiber direction.

1. 1- Derivation of thermal coefficient for composite material having a stress
in the fiber direction
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2- Derivation of thermal coefficient for composite material having a stress
perpendicular to the fiber direction
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