About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Modeling, Simulation and Machine Learning
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Presentation Title |
Digital Twin Framework for Identifying Microstructure Heterogeneity in an As-built Powder Bed Fusion Part |
Author(s) |
Gerry L. Knapp, Benjamin Stump, Luke Scime, Andres Marquez Rossy, Chase Joslin, William Halsey, Alex Plotkowski |
On-Site Speaker (Planned) |
Gerry L. Knapp |
Abstract Scope |
During additive manufacturing, the local solidification conditions and the resulting microstructure can vary due to interactions between the process parameters, scan path, and part geometry. A modern digital factory framework creates a digital twin of a manufactured part consisting of build information, in situ sensing data, and post processing information; however, exact solidification conditions are difficult to capture in situ. Here, we use scan path data from a powder bed fusion SS316-L build as inputs to a simulation of solidification conditions in the as-built part. A Gaussian Mixture Model was then used to cluster the solidification data to identify regions with heterogeneous solidification conditions. Experimental measurements of texture and grain size showed that quantitative variations in the microstructure corresponded with the locations of the predicted solidification data clusters. This research was supported by the U.S. Department of Energy AMMTO and NE offices. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Solidification |