ROUX, Stéphane; HILD, François; VIOT, Philippe; BERNARD, Dominique

doi:10.1016/j.compositesa.2007.11.011

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ROUX, Stéphane
Laboratoire de Mécanique et Technologie [LMT]

HILD, François
Laboratoire de Mécanique et Technologie [LMT]

VIOT, Philippe
Laboratoire Matériaux Endommagement Fiabilité et Ingénierie des Procédés [LAMEFIP]

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Composites Part A: Applied Science and Manufacturing. 2008, vol. 39, n° 8, p. 1253–1265

Elsevier

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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 {\em 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.< Leer menos

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digital image correlation

Cellular material

shape function

displacement uncertainty

strain localization

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

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