LaueNN: neural-network-based hkl recognition of Laue spots and its application to polycrystalline materials
Article dans une revue avec comité de lecture
Date
2022-08Journal
Journal of Applied CrystallographyAbstract
A feed-forward neural-network-based model is presented to index, in real time, the diffraction spots recorded during synchrotron X-ray Laue microdiffraction experiments. Data dimensionality reduction is applied to extract physical 1D features from the 2D X-ray diffraction Laue images, thereby making it possible to train a neural network on the fly for any crystal system. The capabilities of the LaueNN model are illustrated through three examples: a two-phase nanostructure, a textured high-symmetry specimen deformed in situ and a polycrystalline low-symmetry material. This work provides a novel way to efficiently index Laue spots in simple and complex recorded images in <1 s, thereby opening up avenues for the realization of real-time analysis of synchrotron Laue diffraction data.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lecturePURUSHOTTAM RAJ PUROHIT, Ravi Raj Purohit; TARDIF, Samuel; CASTELNAU, Olivier; EYMERY, Joel; GUINEBRETIÈRE, René; ROBACH, Odile; ORS, Taylan; MICHA, Jean-Sébastien (Online Library Wiley, 2022-06)A feed-forward neural-network-based model is presented to index, in real time, the diffraction spots recorded during synchrotron X-ray Laue microdiffraction experiments. Data dimensionality reduction is applied to extract ...
-
Article dans une revue avec comité de lectureORS, Taylan; GOURAUD, Fanny; MICHEL, Vincent; HUGER, Marc; GEY, Nathalie; MICHA, Jean-Sébastien; CASTELNAU, Olivier; GUINEBRETIÈRE, René (Elsevier, 2021)From the liquid state to room temperature, two successive solid-state phase transitions occur in pure zirconia. It is well-known that the last one (tetragonal to monoclinic) is martensitic and induces large volume variations ...
-
Article dans une revue avec comité de lectureÖRS, Taylan; MICHA, Jean-Sébastien; GEY, Nathalie; MICHEL, Vincent; CASTELNAU, Olivier; GUINEBRETIERE, René (International Union of Crystallography, 2018)The X-ray Laue microdiffraction (mLaue) technique has been establishing itself as a reliable means for microstrain analysis for the past few decades. One problem with this technique is that when the crystal size is ...
-
Article dans une revue avec comité de lectureHEKTOR, Johan; MARIJON, Jean-Baptiste; RISTINMAA, Matti; HALL, Stephen A.; HALLBERG, Hakan; SRINIVASAN, Iyengar; MICHA, Jean-Sébastien; ROBACH, Odile; GRENNERAT, Fanny; CASTELNAU, Olivier (Elsevier, 2018)We have used Differential Aperture X-ray Microscopy (DAXM) to measure grain orientations and deviatoric elastic strains in 3D around a tin whisker. The results show strain gradients through the depth of the tin coating, ...
-
Direct measurement of local constitutive relations, at the micrometre scale, in bulk metallic alloys Article dans une revue avec comité de lecturePLANCHER, E; MAURICE, C; FAVIER, V; LOISNARD, D; RUPIN, N; MARIJON, Jean-Baptiste; MICHA, Jean-Sébastien; ROBACH, Odile; CASTELNAU, Olivier; BOSSO, E; STODOLNA, J; PETIT, J (International Union of Crystallography, 2017)Multiscale models involving crystal plasticity are essential to predict the elastoplastic behavior of structural materials with respect to their microstructure. However, those models are often limited by a poor knowledge ...