About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Integration of X-ray Imaging and Phase-field Simulations for High-quality Evaluation of Solidification Microstructure Evolution |
Author(s) |
Ayano Yamamura, Shinji Sakane, Hideyuki Yasuda, Tomohiro Takaki |
On-Site Speaker (Planned) |
Ayano Yamamura |
Abstract Scope |
Time-resolved X-ray tomography (4D-CT) allows us to observe the evolution of dendritic microstructures in real time. In the 4D-CT studies by Yasuda et al., phase-field (PF) filtering was introduced to reconstruct smooth three-dimensional dendritic structures. To achieve more physically accurate filtering, we developed data assimilation that integrates the X-ray imaging and high-performance PF simulations. Here, the cylindrical sample used in the 4D-CT was targeted. To reduce the computational cost in the data assimilation system, adaptive mesh refinement method, local ensemble Kalman filter, and parallel-GPU computation were employed. The developed system was verified through twin experiments, and data assimilation was attempted using real X-ray images. |
Proceedings Inclusion? |
Planned: |