Enhanced Transient Hot Bridge Method Using a Finite Element Analysis

被引：1
|
作者：
Gaiser, J. [1 ]
Stripf, M. [1 ]
Henning, F. [2 ]
机构：
[1] Univ Appl Sci Karlsruhe, Dept Mech Engn, Karlsruhe, Germany
[2] Karlsruhe Inst Technol, Inst Vehicle Syst Technol, Karlsruhe, Germany
来源：
INTERNATIONAL JOURNAL OF THERMOPHYSICS | 2019年 / 40卷 / 01期
关键词：
Anisotropic materials; Finite element analysis; Transient hot bridge; Thermal diffusivity; Thermal conductivity; THERMAL-CONDUCTIVITY; DIFFUSIVITY;
D O I：
10.1007/s10765-018-2476-y
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper presents a new enhanced measuring procedure to determine the direction-dependent thermal diffusivity of anisotropic materials using the transient hot bridge technique. Two measurements with different sensor orientation are performed to ascertain the thermal diffusivities in the three spatial directions. The analysis of the measurement signals combines an analytical evaluation with a finite-element post-diction of the signal. The measurement uncertainty is assessed to 4%-10%.
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页数：15
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