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Metrological analysis of shearography*

Published online by Cambridge University Press:  12 July 2006

F. Taillade
F. Taillade*
Affiliation:
Laboratoire Central des Ponts et Chaussées, 58 boulevard Lefebvre, 75732 Paris Cedex 15, France
*
frederic.taillade@lcpc.fr
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Abstract

This paper presents an uncertainty budget of measurement on the optical phase on the basis of a metrological analysis inspired from the “GUM” approach [GUM, Guide to the expression of Uncertainty in Measurement (ISBN 92-67-20188-9, 1993)]. This budget takes account of the procedure implemented in calibrating the phase-shifting device and in the actual phase measurement. This study leads to deriving an estimation of the standard uncertainty in measuring the optical path difference at approximately $\lambda/98$ . This value agrees with a purely experimental estimate [F. Taillade, Association de la shearographie et des ondes de Lamb pour la détection rapide et quantitative des délaminages, Ph.D. thesis, Technical Note ONERA, NT 2001-3, 2001], which led to a standard uncertainty of roughly $\lambda/108$ .

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 35 , Issue 2 , August 2006 , pp. 145 - 148
Copyright
© EDP Sciences, 2006

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Footnotes

*

This paper has been presented at “3e colloque interdisciplinaire en instrumentation (C2I 2004)”, École Normale Supérieure de Cachan, 29–30 janvier 2004.

References

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J.V. Beck, Parameter estimation in engineering and science (John Wiley and Sons, 1976)
F. Taillade, Association de la shearographie et des ondes de Lamb pour la détection rapide et quantitative des délaminages, Ph.D. thesis, Technical Note ONERA, NT 2001-3 (2001)