Three dimensional image correlation from X-Ray computed tomography of solid foam
Language
en
Article de revue
This item was published in
Composites Part A: Applied Science and Manufacturing. 2008, vol. 39, n° 8, p. 1253–1265
Elsevier
English 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 ...Read more >
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.Read less <
English Keywords
digital image correlation
Cellular material
shape function
displacement uncertainty
strain localization
Origin
Hal imported