Thermal diffusivity of semitransparent materials determined by the laser-flash method applying a new analytical model

被引：138
|
作者：
Mehling, H
Hautzinger, G
Nilsson, O
Fricke, J
Hofmann, R
Hahn, O
机构：
[1] Bavarian Ctr Appl Ecol Res ZAE Bayern, D-97074 Wurzburg, Germany
[2] Fraunhofer Inst Silicatforsch, D-97082 Wurzburg, Germany
来源：
INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1998年 / 19卷 / 03期
关键词：
analytical model; glass; laser-flash method; radiative heat transfer; thermal conductivity; thermal diffusivity;
D O I：
10.1023/A:1022611527321
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
We have developed an analytical model to determine the thermal diffusivity of nonscattering materials from samples with low optical thickness and opaque boundaries with arbitrary emissivities. The paper outlines the new analytical model and describes measurements on two samples: a microscope slide glass and a high-grade fused quartz plate. Results show that the new model applied to measurements on gold- or graphite-coated samples leads to the same results as if a conventional model is used on gold-coated samples.
引用
收藏
页码：941 / 949
页数：9
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