| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
| Presentation Title |
Real Time Spot Tracking and Materials Characterization for High Energy X-Ray Diffraction Microscopy |
| Author(s) |
Daniel P. Banco, Wiley K. Kirks, Sven E. Gustaffson, Katherine S. Shanks, Kelly E. Nygren, Matthew P. Miller, Eric L. Miller |
| On-Site Speaker (Planned) |
Daniel P. Banco |
| Abstract Scope |
3D high energy X-ray diffraction microscopy (HEDM) data captured in-situ for the characterization of structural materials reveal crystal lattice spacing and orientation changes related to plasticity and fatigue. Challenges associated with large data volumes and experiment complexity result in limited interaction with data during in-situ experiments and lead to data analysis becoming a bottleneck. Here we address this issue through the development and demonstration of data analysis methods providing real-time feedback during experiments. Our sparsity-based signal processing approach tracks diffraction spots in far-field HEDM data and computes time-evolving features indicative of plasticity. The algorithm is inherently parallelizable and provides interpretable features dynamically as the spots spread, move, and overlap during an experiment. While not necessary for processing, prior ex-situ HEDM measurements and virtual diffraction simulation provided crucial guidance to the data analysis. The approach was implemented at the CHESS structural materials beamlines and validated on both simulated and experimental data. |
| Proceedings Inclusion? |
Undecided |