Analysis of Fractured Samples with Digital Volume Correlation

François Hild (1) , Jean-Yves Buffière (2) , Anthony Gravouil (3, 2) , Nathalie Limodin (2) , Julien Réthoré (3) , Stéphane Roux (1) , Wolfgang Ludwig (4)

1 LMT - Laboratoire de Mécanique et Technologie
2 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
3 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
4 ESRF - European Synchrotron Radiation Facility [Grenoble]

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.

Domaines: Matériaux et structures en mécanique [physics.class-ph]

François Hild, Jean-Yves Buffière, Anthony Gravouil, Nathalie Limodin, Julien Réthoré, et al.. Analysis of Fractured Samples with Digital Volume Correlation. Annual Conference on Experimental and Applied Mechanics, Jun 2010, Indianapolis, United States. pp.327-330, ⟨10.1007/978-1-4419-9796-8_42⟩. ⟨hal-01668796⟩