About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
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Presentation Title |
Reduced-Dimension Surrogate Modeling for Microstructure Prediction |
Author(s) |
Arulmurugan Senthilnathan, Paromita Nath, Pranav Karve, Sankaran Mahadevan |
On-Site Speaker (Planned) |
Arulmurugan Senthilnathan |
Abstract Scope |
The macro-scale properties of an additively manufactured part are directly related to the characteristic features of its microstructure. Variability in the printing process and material properties affect the microstructure, and therefore, the macro-scale material properties. Systematic quantification and propagation of this uncertainty require numerous process-structure-property (P-S-P) simulations. The P-S simulations are computationally expensive and yield a high-dimensional output. The high computational cost necessitates the use of inexpensive surrogate models for uncertainty quantification and/or propagation, but the large output dimension makes it difficult to build such surrogate models. Therefore, in this work, moment invariants are first used to reduce the dimension of the P-S simulation output. A surrogate model is then constructed for probabilistic prediction of reduced-dimensional microstructural characteristics (moment invariants) given the process parameters and material properties considering the model uncertainties. Moment invariants-based dimension reduction and surrogate modeling pave the way for solving stochastic optimization problems for optimal process design. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Machine Learning |