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Artifact Correction for DVC Measurements Using a Laboratory X-Ray Source

type de publication      communication internationale avec actes publiés
date de publication 2013
auteur(s) Adrien Jérôme; Buffière Jean-Yves; Hild François; Limodin Nathalie; Rethore Julien; Roux Stéphane
  
conférence Annual Conference on Experimental and Applied Mechanics
     dates de 11-06-2012 à 14-06-2012
     lieu Costa Mesa, CA, USA
     nom des actes Imaging Methods for Novel Materials and Challenging Applications, Volume 3 Conference Proceedings of the Society for Experimental Mechanics Series Volume 35
  
pages 217 – 220
ISBN / ISSN 978-1-4614-4234-9
résumé The effects of temperature elevation of the X-ray tube of a lab tomograph during image acquisition are analyzed in terms of their induced biases for Digital Volume Correlation (DVC) from a series of reconstructed volumes acquired successively. Spurious dilatational strains are induced by temperature variations in the tomograph. If not accounted for, any quantitative kinematic measurement is impossible for strain levels below 0.5%. When corrected, it is possible to determine the elastic parameters of nodular graphite cast iron
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