ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1138541