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Analysis of fractured samples with digital volume correlation

type de publication      communication internationale avec actes publiés
date de publication 2013
auteur(s) Hild François; Buffière Jean-Yves; Gravouil Anthony; Limodin Nathalie; Rethore Julien; Roux Stéphane; Ludwig Wolfgang
conférence SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2010
     dates de 07-06-2010 à 10-06-2010
     lieu Indianapolis, Indiana, USA
     nom des actes Application of Imaging Techniques to Mechanics of Materials and Structures, Volume 4. Proceedings of the 2010 Annual Conference on Experimental and Applied Mechanics
pages 327 – 330
ISBN / ISSN 978-1-4419-9528-5
résumé Synchrotron X-ray tomography was used to monitor in situ three dimensional (3D) fatigue crack propagation in a nodular graphite cast iron. Direct image analysis allows for the retrieval of the successive positions of the crack front, and the detection of local crack retardation, while volume correlation enables for the measurement of displacement fields in the bulk of the specimen. Stress Intensity Factors (SIF) are extracted from the measured displacement fields. It is possible to link the non propagation of a crack with crack closure in COD maps or with a local value of the measured SIF range
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