| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Full Integration of FFT-based Methods for Optimization and Modelling of Micromechanical Data Obtained by Advanced Characterization Techniques |
| Author(s) |
Ricardo A. Lebensohn |
| On-Site Speaker (Planned) |
Ricardo A. Lebensohn |
| Abstract Scope |
We report recent advances in the integration of FFT-based formulations with advanced characterization techniques, both for micromechanical modelling, as well as for improved data reduction. In connection with these two integration approaches, we show: a) applications of the large-strain elasto-viscoplastic FFT-based (LS-EVPFFT) model to interpret data from 3D x-ray diffraction (3DXRD), nano-pillar experiments, and micro-indentation, and b) a novel FFT-based methodology to impose micromechanical constraints to arbitrary voxelized stress fields obtained by 3DXRD. The proposed stress filtering method consists in finding the equilibrated stress field closest to a non-equilibrated field, posed as an optimization problem. The method is demonstrated by filtering synthetic piecewise constant stress fields and comparing with the corresponding ground-truth, and applied to filter stress fields in beta-Ti alloy obtained by imposing diffraction constraints only. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Modeling and Simulation, Mechanical Properties |