About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
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Presentation Title |
Biases and Limitations in Reported Data of Laser Powder Bed Fusion: Implications for the Learning |
Author(s) |
Raymond Wong, Anh Tran, Bogdan Dovgyy, Claudia Santos Maldonado, Minh-Son Pham |
On-Site Speaker (Planned) |
Raymond Wong |
Abstract Scope |
Data analytics and machine learning (ML) are powerful tools for providing insights into the complex process for additive manufacturing (AM). Significant amounts of experimental data for AM have been reported in literature, particularly for laser powder bed fusion. This study compiles over 2000 data entries reported from literature to evaluate biases within reported data and assess associated implication of biases in learning underlying mechanisms; and subsequently, in effective use of data-driven approaches for AM. Biases caused by some common practices of reporting data in literature are discussed. Multiple ML models were trained to provide a basis for investigating the influence of the biases on the model performance. Sensitivity analysis was conducted to investigate whether the ML models could accurately reflect the underlying science governing the AM process. Our study reveals severely negative impacts of the biases and the excessive use of consolidation as the sole quality indicator exacerbate the issue. |
Proceedings Inclusion? |
Planned: |
Keywords |
Machine Learning, Additive Manufacturing, |