About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
AI/Data Informatics: Applications and Uncertainty Quantification at Atomistics and Mesoscales
|
| Presentation Title |
Bayesian Inference and Uncertainty Quantification of Grain Boundary Properties |
| Author(s) |
Sterling G. Baird, Brandon Snow, Alexia Bigelow, David T Fullwood, Eric R Homer, Oliver Johnson |
| On-Site Speaker (Planned) |
Sterling G. Baird |
| Abstract Scope |
The development of structure-property models for grain boundaries (GBs) has been historically challenging due to a combination of the high cost (both monetary and temporal) of bicrystal synthesis/characterization/property measurement, and the high-dimensionality of the space. Consequently there are few models that exist, and most of those that do are restricted to high-symmetry subspaces (i.e. they do not consider the full 5D GB character space). We demonstrate the use of Bayesian inference techniques to infer a fully 5D structure-property model for GB energy using published databases. The approach naturally handles underdetermined systems (i.e. limited data), indirect measurements, and yields quantified uncertainty for the inferred structure-property model. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Machine Learning, Modeling and Simulation |