Three dimensional experimental and numerical multiscale analysis of a fatigue crack

Abstract : A full three dimensional study of a fatigue crack in cast iron is presented. This analysis involves combining various tools, namely, Synchrotron X-ray microtomography of an in situ experiment, image acquisition and treatment, 3D volume correlation to measure 3D displacement fields, extraction of the crack geometry, eXtended Digital Volume Correlation to account for the crack displacement discontinuity, crack modeling in an elastic material exploiting the actual crack geometry, and finally estimation of stress intensity factors. All these different tasks are based on specific multiscale approaches. (C) 2009 Elsevier B.V. All rights reserved.
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Johann Rannou, Nathalie Limodin, Julien Rethore, Anthony Gravouil, Wolfgang Ludwig, et al.. Three dimensional experimental and numerical multiscale analysis of a fatigue crack. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2010, 199, pp.1307-1325. ⟨10.1016/j.cma.2009.09.013⟩. ⟨hal-00430486v2⟩

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