Skip to Main Content
Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1138541
We describe an implementation of the experimental technique used for measuring thermal diffusivity and propagation properties of thermal waves by means of a non‐steady‐state method. The values of the phase shift and amplitude ratio of the temperature oscillation at two fixed points of the specimen are obtained directly by a data‐acquisition and processing system which uses a properly interfaced microcomputer. Moreover, in order to reduce substantially the constant temperature gradient along the specimen, the heat oscillating source was replaced by a Peltier device supplied with an alternating current.