New numerical method for one-dimensional unsteady heat conduction problem within laminated binary materials

Unsteady temperature distribution within laminated material is calculated by using a numerical Laplace inversion technique. This method can be applied to material consisting of up to 100 lamination layers and also to multicomponent laminates. The temperature distribution is much affected, especially in a short elapsed time, by the thermal properties of surface component, resulting in a quite different distribution from that within homogeneous material. The apparent thermal diffusivity of such material is not uniquely determined because it depends on the number of components as well as observation time