Progress in the Rapid, Contactless Measurement of Thermal Diffusivity
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
We describe progress in the rapid, contactless and accurate measurement of thermal diffusivity of materials. The technique is based upon pulsed heating of a slab, using a geometric pattern, followed by observation of time-dependent heat flow on the opposite surface of the slab, using a fast infrared video camera to acquire the time evolution of the thermal shadows at various edges of the heating pattern.