科研之友
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摘要
New measurements of the thermal conductivity of polymethyl methacrylate (PMMA), BK7, and Pyrex 7740 are presented. The technique employed is a refined transient hot-wire technique, based on a full theoretical model with equations solved by finite elements for the exact geometry. At the 95% confidence level, the standard deviations of the thermal conductivity measurements of PMMA, BK7, and Pyrex 7740 are 0.47%, 1.0%, and 0.8%, respectively. The technique is absolute and is characterized by an uncertainty of < 1%.
- 出版日期2008-8
- 单位西安交通大学
