Thermal contact resistance in transient conductivity measurements
- 1 April 1978
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 11 (4) , 323-326
- https://doi.org/10.1088/0022-3735/11/4/014
Abstract
Numerical studies indicate that thermal contact resistance can invalidate thermal conductivities determined by transient line source techniques. For thin wires in rock, experimental data suggest a thermal contact resistance equivalent to 0.08 mm of air. If similar values are assumed for needle probes then the duration of measurement must exceed 41/2 min if conductivities are to be determined with 98% accuracy.Keywords
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