Theory of hybrid computational and physical measurement-based integration of thermal and dimensional measurement

David Ross-Pinnock, Bing Yang, Paul Maropoulos

    Research output: Unpublished contribution to conferenceUnpublished Conference Paperpeer-review


    In dimensional metrology, often the largest source of uncertainty of measurement is thermal variation. Dimensional measurements are currently scaled linearly, using ambient temperature measurements and coefficients of thermal expansion, to ideal metrology conditions at 20˚C. This scaling is particularly difficult to implement with confidence in large volumes as the temperature is unlikely to be uniform, resulting in thermal gradients. A number of well-established computational methods are used in the design phase of product development for the prediction of thermal and gravitational effects, which could be used to a greater extent in metrology. This paper outlines the theory of how physical measurements of dimension and temperature can be combined more comprehensively throughout the product lifecycle, from design through to the manufacturing phase. The Hybrid Metrology concept is also introduced: an approach to metrology, which promises to improve product and equipment integrity in future manufacturing environments. The Hybrid Metrology System combines various state of the art physical dimensional and temperature measurement techniques with established computational methods to better predict thermal and gravitational effects.
    Original languageEnglish
    Publication statusPublished - 2015
    Event38th MATADOR conference on advanced manufacturing - National Formosa University, Huwei, Taiwan
    Duration: 28 Mar 201530 Mar 2015


    Conference38th MATADOR conference on advanced manufacturing


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