About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithms Development in Materials Science and Engineering
|
Presentation Title |
Simplistic models for predicting the resolvability of HEDM diffraction peaks in polycrystalline materials |
Author(s) |
Austin Robert Cole Gerlt, Alan Gan, Gregory Sparks, Paul Shade, Donald Boyce, Stephen Niezgoda |
On-Site Speaker (Planned) |
Austin Robert Cole Gerlt |
Abstract Scope |
For polycrystalline materials observed in far field HEDM, diffraction peaks are of maximal use when they are detectible, resolvable, and relatively isolated from one another. Considering the cost and limited availability of Synchrotron resources, it is therefore prudent to predict resolvability limits beforehand as a function of experimental parameters.
To this end, the authors introduce equations for calculating the expected angular separation of poles due to a stochastic sampling of orientation space. This idealized case is then expanded upon to account for sample properties, grain count, hardware limitations, and texture in order to predict the proportion of resolvable peaks in an experiment. This enables a more informed approach to experimental design, where the observed volume of material can be maximized while still having a high confidence in the quality of the observations. |
Proceedings Inclusion? |
Planned: |