Int. J. Metrol. Qual. Eng.
Volume 8, 2017
|Number of page(s)||7|
|Published online||21 August 2017|
Thermal compensation for large volume metrology and structures
Department of Mechanical Engineering, University of Bath,
BA2 7AY, United Kingdom
* Corresponding author: email@example.com
Accepted: 25 January 2017
Ideally metrology is undertaken in well-defined ambient conditions. However, in the case of the assembly of large aerospace structures, for example, measurement often takes place in large uncontrolled production environments, and this leads to thermal distortion of the measurand. As a result, forms of thermal (and other) compensation are applied to try to produce what the results would have been under ideal conditions. The accuracy obtained from current metrology now means that traditional compensation schemes are no longer useful. The use of finite element analysis is proposed as an improved means for undertaking thermal compensation. This leads to a “hybrid approach” in which the nominal and measured geometry are handled together. The approach is illustrated with a case study example.
Key words: thermal compensation / large volume metrology / finite element analysis / assembly
© B. Yang et al., published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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