| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification Science VIII
|
| Presentation Title |
A Comparison of Terrestrial and Microgravity Isothermal Equiaxed Alloy Solidification through Machine Learning, Multi-stage Thresholding and Sub-dendrite-based In Situ X-ray Video Processing |
| Author(s) |
Jonathan Stewart Mullen, Mert Celikin, Pádraig Cunningham, David Browne |
| On-Site Speaker (Planned) |
Jonathan Stewart Mullen |
| Abstract Scope |
The in-situ observation of growing dendrites via X-Ray videos can be used to study alloy solidification under different gravitational conditions. However, due to the constraints involved with conducting data acquisition on-board microgravity flights, the resulting videos can suffer from a number of imaging issues which make automated assessment difficult and susceptible to errors. High levels of noise and variable amounts of blurring linked to the effective shutter speed, both within and between frames, can lead to measurement difficulties and inaccuracies when using non-specialised automated techniques. Our approach uses a combination of machine learning, multi-stage thresholding and sub-dendrite-based processing to automatically quantify the growth and motion of the individual dendrites observed in the spatially isothermal, equiaxed solidification of a thin Al-20wt%Cu alloy in the XRMON-SOL furnace, both on the ground and in near-zero gravity conditions on board the Maser 13 sounding rocket. |
| Proceedings Inclusion? |
Planned: |