测定双层组合介质接触热阻

 当激光辐照双层固体组合介质的外表面时，在变物性及界面接触热阻不变的条件下，数值计算了介质内部温度场时空分布。实验测定该双层介质背面对应点的温度曲线，与数值计算的结果进行比较，从而确定介质界面间的接触热阻。

Measurement of the thermal contact resistance between two-layer complex mediums

Under the conditions of known thermophysical properties of mediums and supposed some thermal contact resistances of interface between two layered infinite complex mediums, the inside temperature distribution of medium and the temperature raise curve at the two-concave-disk target's back surface center is computed numerically when the front surface is irradiated by laser. And the temperature raise curve is also measured experimentally. The thermal contact resistance of the interface is determined by comparing the experimental data with the computed results. Through numerical computation, it is found that the concave disks accord with the supposition of infinite slab and the effect of thermal expansion on the interface thermal contact resistance is very small.