Instantaneous Coefficient of Linear Thermal Expansion—A New Definition

    Volume 25, Issue 5 (September 1997)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 6


    Bhattachar, VS
    Lohitsa Inc., Southfield, MI

    (Received 25 June 1996; accepted 29 January 1997)

    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.


    Paper ID: JTE11357J

    DOI: 10.1520/JTE11357J

    ASTM International is a member of CrossRef.

    Author
    Title Instantaneous Coefficient of Linear Thermal Expansion—A New Definition
    Symposium , 0000-00-00
    Committee C08