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ISSN: 0090-3973
Published Online: 1 September 1997
Page Count: 6

Instantaneous Coefficient of Linear Thermal ExpansionA New Definition
Bhattachar VS

Abstract
The mean coefficient of linear thermal expansion is used to define a new instantaneous coefficient of linear thermal expansion (ILTE) which is proved to be independent of reference temperatures required to define mean values. Hence it can be considered a true material property. The new ILTE provides a common reference to compare thermal expansion data of different materials. This instantaneous coefficient is different from the instantaneous value defined by ASTM standards. Values of the new coefficient are compared with the widely used mean coefficient values. Accuracy of calculations using the new ILTE is demonstrated using the mean coefficient data of two materials.

Keywords:
coefficient of thermal expansion, thermal strain

Paper ID: JTE11357J
DOI: 10.1520/JTE11357J
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