About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithm Development in Materials Science and Engineering
|
Presentation Title |
Statistics of the Lattice Distortion of Dislocated Crystals |
Author(s) |
Joseph Anderson, Anter El-Azab |
On-Site Speaker (Planned) |
Joseph Anderson |
Abstract Scope |
How are the internal statistics of lattice distortions related to the underlying defect configuration? This complex relationship lies at the heart of modern characterization methods of crystal plasticity, e.g. electron back-scatter diffraction, high-energy x-ray diffraction, etc. While the forward problem, from the dislocation configuration to the internal lattice distortion field, is well understood, the inverse relationship is poorly understood. The present study will focus on dimensionality reduction of the relationship between the dislocation density autocorrelation functions and the internal elastic distortion distribution. The purpose of this work is to search for a low-dimensional subspace of the 9-dimensional distortion tensor space which accounts for the majority of variation in the distortion field. Following identification of such a subspace, linkages from these internal elastic distortion features to the dislocation density autocorrelation functions are established. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Mechanical Properties, Machine Learning |