Apparatus for the absolute measurement of the linear thermal expansion coefficient of solids over a wide temperature range
- 1 April 1989
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 22 (4) , 222-229
- https://doi.org/10.1088/0022-3735/22/4/004
Abstract
Apparatus is described for the automatic measurement of the linear thermal expansion coefficient of solids over the temperature range 80 to 800 K by an absolute interferometric technique which is suitable for use with any material. A microcomputer is used to analyse interference fringe patterns in order to determine length changes to an accuracy of 3 nm. Test results are presented for the linear thermal expansion coefficients of fused silica and copper obtained using the apparatus.Keywords
This publication has 8 references indexed in Scilit:
- Thermophysical properties of asbestos-reinforced rubbersJournal of Materials Science, 1985
- An absolute interferometric dilatometerJournal of Physics E: Scientific Instruments, 1977
- Absolute dilatometry using a polarization interferometerJournal of Physics E: Scientific Instruments, 1975
- Thermal expansion at elevated temperatures. I. Apparatus for use in the temperature range 300-800 K: the thermal expansion of copperJournal of Physics E: Scientific Instruments, 1973
- Thermal Expansion of Copper from 20 to 800 K—Standard Reference Material 736Journal of Applied Physics, 1970
- The interferometric measurement of the thermal expansion of silver and palladium at low temperaturesCryogenics, 1968
- The interferometric measurement of the thermal expansion of caesium iodide at low temperaturesCryogenics, 1965
- Measurement of thermal expansion at low temperaturesCryogenics, 1961