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About this Abstract
Meeting	2025 TMS Annual Meeting & Exhibition
Symposium	Verification, Calibration, and Validation Approaches in Modeling the Mechanical Performance of Metallic Materials
Presentation Title	Quantifying Uncertainties Using Crystal Plasticity Modeling of Microstructural Clones
Author(s)	Hojun Lim, Kaitlynn Fitzgerald, Nicole Aragon, Tim Ruggles, Jay Carroll
On-Site Speaker (Planned)	Hojun Lim
Abstract Scope	Crystal plasticity finite element (CP-FE) models are now widely used to investigate grain-scale deformation of crystalline materials. These models are typically validated with experimental measurements, but it is difficult to quantitatively compare regions of interest using multiple experimental techniques at different length scales. Here, we compare CP-FE predictions of local and global mechanical responses to “Microstructure Clones” data, multiple experimental data from identical quasi-2D crystal specimens. These specimens have nearly identical grain morphologies, grain orientations, grain boundary characters, and similar dislocation arrangements. Such specimens enable multiple in-situ and ex-situ experiments on nominally identical samples while locking down several variables and explore the impact of a single variable in a more scientifically rigorous way. We use these clone experiments and simulations to quantify uncertainties. This procedure provides an objective and quantitative methodology to evaluate the model-experiment agreement and allows for testing of various model parameters to improve the CP-FE model.
Proceedings Inclusion?	Planned:
Keywords	Modeling and Simulation, Mechanical Properties, Computational Materials Science & Engineering

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