Analysis of Unsteady Heat Conduction in Laminated Materials and Appropriateness of its Homogeneous-Material Approximation

Abstract

To analyze the characteristics of one-dimensional unsteady heat conduction in laminated materials, the relationship between temperature and heat flux is analytically derived in the s-domain as a function of the number of laminated layers. The error due to the homogeneous approximation with some apparent thermal properties is evaluated.
These results are closely concerned with the method of unsteady measurement of thermal diffusivity Based on the results, consideration is given on the problems which arise in its application to laminated materials.