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Three dimensional image correlation from X-Ray computed tomography of solid foam

Article dans une revue avec comité de lecture
Author
ROUX, Stéphane
247321 Laboratoire de Mécanique et Technologie [LMT]
HILD, François
247321 Laboratoire de Mécanique et Technologie [LMT]
BERNARD, Dominique
481 Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ccVIOT, Philippe

URI
http://hdl.handle.net/10985/8261
DOI
10.1016/j.compositesa.2007.11.011
Date
2007
Journal
Composites Part A: Applied Science and Manufacturing

Abstract

A new methodology is proposed to estimate 3D displacement fields from pairs of images obtained from X-Ray Computed Micro Tomography (XCMT). Contrary to local approaches, a global approach is followed herein that evaluates continuous displacement fields. Although any displacement basis could be considered, the procedure is specialized to finite element shape functions. The method is illustrated with the analysis of a compression test on a polypropylene solid foam (independently studied in a companion paper). A good stability of the measured displacement field is obtained for cubic element sizes ranging from 16 voxels to 6 voxels.

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