About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
Presentation Title |
A Polycrystalline X-Ray Virtual Diffractometer for Direct Comparisons to Experimental Data |
Author(s) |
Sven E. Gustafson, Paul R Dawson, Matthew P Miller, Kelly E Nygren |
On-Site Speaker (Planned) |
Sven E. Gustafson |
Abstract Scope |
Micromechanical modeling routinely simulates spatially resolved fields for polycrystals with thousands of grains undergoing continuous in-situ deformation; however, current experimental techniques cannot probe such fields within all grains with the spatial, angular, and temporal resolution to facilitate direct comparison. Current reconstructions only extract grain averaged information even though experimental detector images from far-field high energy diffraction microscopy contain relevant spatially resolved information and the technique operates with sufficient temporal resolution. To facilitate an experiment to model comparison, a finite element based virtual diffractometer is presented here to produce realistic diffraction images from model generated microstructures, a spatially resolved x-ray beam, and a pixelated detector. The functionality of the virtual diffractometer is demonstrated with experimental to virtual detector image comparisons for an ideal crystal. The evolution of detector image data from an in-situ mechanical test is then compared with a virtual diffraction simulation of the corresponding model generated microstructure. |
Proceedings Inclusion? |
Undecided |