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Development and Uncertainty Analysis of Push-Rod Dilatometer
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TB302

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    Abstract:

    Push-rod dilatometer has been developed for measuring linear thermal expansion coefficients of solid
    materials for thermal expansion from the room temperature to 500℃. The linear thermal expansion coefficients of single-
    crystal sapphire have been determined using the Push-rod dilatometer. The present data are compared with the data
    recommended by the National Institute of Standards and Technology ( NIST), which are in good agreement. The
    relative uncertainty in the measurement was estimated to be less than 4% in the temperature range, based upon the
    data of single-crystal sapphire. 

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  • Online: November 28,2016
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