A proposal for a referenceless approach to measurements of the thermal expansion of solids

Vikram, Chandra S.

doi:10.1088/0957-0233/8/10/018

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…The fringes in the resulting pattern were then used to calculate the thermal expansion. Despite the experiment being carried out in air, expansion data was recorded up to 1200 • C. [72] aims to measure changes in the area of a sample as it expands thermally. The total amount of incident light scattered from a flat sample onto a photodetector was measured, and the CTE of a 25 mm square specimen of aluminium was accurately determined to 95 • C with this technique.…”

Section: Speckle Pattern Interferometrymentioning

confidence: 99%

A review of measurement techniques for the thermal expansion coefficient of metals and alloys at elevated temperatures

James

Spittle

Brown

et al. 2001

Meas. Sci. Technol.

211

103

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Metallurgical operations at elevated temperatures, such as those that involve solidification and/or mechanical deformation, can be critically influenced by the thermal stresses and strains that result from expansion and contraction of the material as a function of temperature. With the increasing use of computer-based process models for these operations, there arises a greater need for quantitative data on the thermal expansion coefficient of the relevant alloy at the temperatures involved. After briefly reviewing some existing sources of data for this property, the various techniques for its measurement at elevated temperatures are then described. These include mechanical dilatometry, optical imaging and interference systems, x-ray diffraction methods and electrical pulse heating techniques. Finally the implications, for process modelling, of the available data and measurement techniques are discussed.

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Section: Speckle Pattern Interferometrymentioning

confidence: 99%