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 |
How Solid is Your Ground Truth? Interdisciplinary Application of Uncertainty Quantification to Experimental Indentation Testing |
Author(s) |
Astrid Michelle Rodriguez Negron, Aaron E. Tallman |
On-Site Speaker (Planned) |
Aaron E. Tallman |
Abstract Scope |
As data-driven models grow in popularity, the consideration of data quality is becoming increasingly relevant. In the uncertainty quantification of computational materials models, a ground-truth is assumed—the uncertainty of experiments is seldom considered. While cost-aware multi-fidelity approaches can optimize data collection, these methods are limited to the set of a priori known experiment methods. The examination of experiments for inherent uncertainty is unusual and promising. If a model of the epistemic and aleatory uncertainties in experiments can be formulated, the methods of those experiments can be opened to optimization, and different ground truths can be compared. A case study is presented in the indentation testing of Al 7075. A set of 84 indentation test results are used to estimate the epistemic uncertainty of the test and the aleatory uncertainty of the local material response. The role of interdisciplinary communication in the work is discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Mechanical Properties, Modeling and Simulation |