About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
Compensating for Sintering Distortion in Additively Manufactured Copper using Physics-Informed Gaussian Process Regression |
Author(s) |
Samuel Paul Moran, Basil Paudel, Albert To, Annika E. Bauman |
On-Site Speaker (Planned) |
Annika E. Bauman |
Abstract Scope |
Copper is a challenging material to process using laser-based additive manufacturing due to its high reflectivity and high thermal conductivity. Sintering-based processes can produce solid copper parts without the processing challenges and defects associated with laser melting; however, sintering can also cause distortion in copper parts, especially those with thin walls. In this study, we use physics-informed Gaussian process regression to predict and compensate for sintering distortion in thin-walled copper parts produced using a Markforged Metal X bound powder extrusion (BPE) additive manufacturing system. Through experimental characterization and computational simulation of copper’s viscoelastic sintering behavior, we can predict sintering deformation. We can then manufacture, simulate, and test parts with various compensation scaling factors to inform Gaussian process regression and predict a compensated as-printed (pre-sintered) part geometry that produces the desired final (post-sintered) part. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525 |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Machine Learning |