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Coupling Diffraction Contrast Tomography with the Finite Element Method
Author(s) -
Proudhon Henry,
Li Jia,
Reischig Peter,
Guéninchault Nicolas,
Forest Samuel,
Ludwig Wolfgang
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201500414
Subject(s) - materials science , finite element method , crystallite , diffraction , anisotropy , grain boundary , lattice (music) , tomography , diffraction tomography , deformation (meteorology) , geometry , composite material , structural engineering , microstructure , mathematics , optics , physics , metallurgy , engineering , acoustics
This paper explains how to turn full three dimensional (3D) experimental grain maps into a finite elements (FE) mesh suitable for mechanical analysis. Two examples from diffraction contrast tomography characterizations are presented. Deformation of a pure titanium sample with 1400 grains is computed using elastic anisotropy and accurate boundary conditions allows to correctly capture the grain to grain elastic strain variations. In the second example a significantly large zone of a polycrystalline Al–Li sample is meshed and computed using elastoplastic finite strain calculation. Mean lattice reorientations and intra‐grain lattice orientation spread are obtained as a function of deformation.