Proceedings Article10.1088/1757-899X/1249/1/012030
Challenges related to tomographic reconstruction of 3D intragranular orientation fields in the presence of orientation relationships
Z. S. Liu,Nicola Viganò,Wolfgang Ludwig +2 more
- 01 Jul 2022
Vol. 1249
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Three-dimensional grain mapping by x-ray diffraction contrast tomography and the use of Friedel pairs in diffraction data analysis.
Wolfgang Ludwig,Péter Reischig,Andrew King,Michael Herbig,Erik Mejdal Lauridsen,G. Johnson,Thomas James Marrow,Jean-Yves Buffiere +7 more
TL;DR: A modified DCT data acquisition strategy is described which permits the incorporation of an innovative Friedel pair method for analyzing diffraction data, resulting in an increase in the accuracy with which the diffraction vectors are determined.
Intragranular localization induced by softening crystal plasticity: Analysis of slip and kink bands localization modes from high resolution FFT-simulations results
TL;DR: In this article, a generic strain softening model is implemented within a massively parallel FFT solver framework to study intragranular strain localization throughout high resolution polycrystalline simulations.
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•Dissertation
Full-field X-ray orientation imaging using convex optimization and a discrete representation of six-dimensional position - orientation space
Nicola Viganò
- 02 Nov 2015
TL;DR: In this paper, the reconstruction problem is formulated as a global minimisation prob- lem, where the reconstruction of a single grain is the solution that minimizes a functional, and all the functionals used include a data fidelity term which ensures that the reconstruction is consistent with the measured diffraction data, and then an additional regularization term is added, like the l 1-norm minimization of the solution vector, that tries to limit the number of orientations per real-space voxel, or a Total Variation operator over the sum of the orientation part of the
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