测试科学与仪器2018，Vol.9Issue(1)：9-15,7.DOI:10.3969/j.issn.1674-8042.2018.01.002
探头引线热损失对TPS法测量导热系数的影响
Influence of heat loss through probe electrical leads on thermal conductivity measurement with TPS method
王雨薇 1李艳宁1
作者信息
- 1. 天津大学精密测试技术及仪器国家重点实验室,天津300072
- 折叠
摘要
Abstract
The transient plane source (TPS) method is developed recently to measure the thermal conductivity of materials.In the measurement,the heating power is influenced by the heat which is transferred via the probe electrical leads.This fact further influences the measurement accuracy of thermal conductivity.To solve this problem,the influence of heat loss through the electrical leads on the heating power is studied theoretically.The mathematical formula of heat loss is deduced,and the corresponding correction model is presented.A series of measurement experiments on different materials have been conducted by using the hot disk thermal constant analyzer.The results show that the influence of the heat loss on the measurement is sensitive to different test materials and probes with different sizes.When the thermal conductivity of the material is greater than 0.2 W/(m · K),the influence of the heat loss is less than 0.16％,which can be ignored.As to the lower thermal conductivity materials,it is necessary to compensate the heat loss through the electrical leads,and the accuracy of thermal conductivity measurement can be effectively improved.关键词
瞬态平面热源法/导热系数/引线热损失/加热功率Key words
transient plane source (TPS) method/thermal conductivity/heat loss through electrical leads/heating power分类
信息技术与安全科学引用本文复制引用
王雨薇,李艳宁..探头引线热损失对TPS法测量导热系数的影响[J].测试科学与仪器,2018,9(1):9-15,7.
