Effective Thermal Diffusivity for a Multimaterial Composite Laminate

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Abstract
This paper discusses the development of an “effective thermal diffusivity” which can be used to estimate the temperature response at the insulated rear surface of a multilayer composite to a step in temperature at the front surface of the composite. An example is considered using the effective value along with the mathematics of a single layer problem, and results thereof are compared with both those of an exact solution, and those which use an effective diffusivity computed from a “lumped” parameter model.

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