Combining Laue microdiffraction and digital image correlation for improved measurements of the elastic strain field with micrometer spatial resolution
Communication avec acte
Author
ROBACH, Odile
445543 Université Grenoble Alpes [2016-2019] [UGA [2016-2019]]
2568 European Synchrotron Radiation Facility [ESRF]
40368 Nanostructures et Rayonnement Synchrotron [NRS ]
445543 Université Grenoble Alpes [2016-2019] [UGA [2016-2019]]
2568 European Synchrotron Radiation Facility [ESRF]
40368 Nanostructures et Rayonnement Synchrotron [NRS ]
MICHA, Jean Sébastien
2568 European Synchrotron Radiation Facility [ESRF]
40368 Nanostructures et Rayonnement Synchrotron [NRS ]
460266 SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé [SYMMES]
502643 Synthèse, Structure et Propriétés de Matériaux Fonctionnels [STEP]
2568 European Synchrotron Radiation Facility [ESRF]
40368 Nanostructures et Rayonnement Synchrotron [NRS ]
460266 SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé [SYMMES]
502643 Synthèse, Structure et Propriétés de Matériaux Fonctionnels [STEP]
LE BOURLOT, Christophe
31551 Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
219748 Institut National des Sciences Appliquées de Lyon [INSA Lyon]
221285 Physique des interactions ioniques et moléculaires [PIIM]
233425 Laboratoire des Sciences des Procédés et des Matériaux [LSPM]
31551 Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
219748 Institut National des Sciences Appliquées de Lyon [INSA Lyon]
221285 Physique des interactions ioniques et moléculaires [PIIM]
233425 Laboratoire des Sciences des Procédés et des Matériaux [LSPM]
Abstract
The X-ray Laue microdiffraction technique, available at beamline BM32 on the synchrotron ESRF, is ideally suited for probing the field of elastic strain (and associated stress) in deformed polycrystalline materials with a micrometric spatial resolution. We show that using Digital Image Correlation for measuring Laue pattern distortions between two mechanical states improves significantly the estimate of elastic strain increment. The potentiality of this new Laue-DIC method is illustrated on an elastically bent Si single crystal, for which the measured elastic strain deviates not more than 10-5 from the theoretical strain distribution provided by standard solutions
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Chapitre d'ouvrage scientifiqueROBACH, Odile; KIRCHLECHNER, Christoph; MICHA, Jean Sébastien; ULRICH, M. Olivier; BIQUARD, Xavier; GEAYMOND, M. Olivier; CASTELNAU, Olivier; BORNERT, Michel; PETIT, Johann; SICARDY, Olivier; VILLANOVA, Julie; RIEUTORD, François; BERVEILLER, Sophie (mperial College Press, 2014)This book highlights emerging diffraction studies of strain and dislocation gradients with mesoscale resolution, which is currently a focus of research at laboratories around the world. While ensemble-average diffraction ...
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Article dans une revue avec comité de lecturePETIT, J; CASTELNAU, Olivier; BORNERT, Michel; ZHANG, F. G.; HOFMANN, F; KORSUNSKY, A. M; FAURIE, D; LE BOURLOT, C; MICHA, Jean-Sébastien; ROBACH, O; ULRICH, O (International Union of Crystallography, 2015)A better understanding of the effective mechanical behavior of polycrystalline materials requires an accurate knowledge of the behavior at a scale smaller than the grain size. The X-ray Laue microdiffraction technique ...
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Article dans une revue avec comité de lecturePLANCHER, Emeric; PETIT, Johann; MAURICE, Claire; SAINTOYANT, Lucie; LOISNARD, Dominique; RUPIN, N.; MARIJON, Jean-Baptiste; ULRICH, Olivier; BORNERT, Michel; MICHA, Jean Sébastien; ROBACH, Odile; CASTELNAU, Olivier; FAVIER, Véronique (Society for Experimental Mechanics, 2016)Determining the accuracy of elastic strain measurements in plastically deformed alloys is an experimental challenge. To develop a novel cross-validation procedure, a controlled elasto-plastic strain gradient was created ...
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