Center for Advanced Friction Studies

Laser Flash Thermal Diffusivity - Laboratory E13
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A single 1-ms pulse of infrared laser light strikes the front of cylindrical sample while the back face is monitored with a infrared detector. The temperature rise curve is fit to a theoretical curve and the diffusivity is determined at several points on the curve. This is the standard measurement for thermal transport, including thermal conductivity, which is equal to the product of bulk density, thermal diffusivity, and the specific heat capacity. Thermal diffusivity may be measured between room temperature and 2000^o C.

The sample is placed in the center of the tantalum tube furnace shown to the left. Measurements above room temperature are performed in an inert environment. The infrared laser is shown to the right. The light is diffused through a copper sulphate solution.Sample Size is 10 mm Diameter By 4 – 6 mm thickness.

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CENTER FOR ADVANCED FRICTION STUDIES

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