Test facility for simultaneous measurement of electrical and thermal contact resistance

Misra, Prashant and Nagaraju, J (2004) Test facility for simultaneous measurement of electrical and thermal contact resistance. In: Review of Scientific Instruments, 75 (8). pp. 2625-2630.

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Abstract

A test setup has been developed for simultaneously evaluating the electrical contact resistance (ECR) and thermal contact resistance/conductance (TCR/TCC) across meta–metal contacts at different contact pressures and mean interface temperatures. ECR and TCC across brass–brass contacts in vacuum have been measured simultaneously at different contact pressures and mean interface temperatures. The results obtained are found to be in agreement with the theoretical models available in the literature for ECR and TCC, independently from each other. The maximum absolute uncertainties in the measurement of ECR and TCC with the present setup are estimated to be ±0.003% and ±4.4%, respectively. Apart from contact resistance measurements, the setup is also used to determine thermal conductivity of unknown materials viz., oxygen-free high-conductivity copper and brass, at different temperatures.

Item Type:	Journal Article
Publication:	Review of Scientific Instruments
Publisher:	American Institute of Physics
Additional Information:	The Copyright belongs to American Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	17 Apr 2006
Last Modified:	19 Sep 2010 04:25
URI:	http://eprints.iisc.ac.in/id/eprint/6309

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