About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Material Responses Investigated Through Novel In-Situ Experiments and Modeling
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| Presentation Title |
Using High-Energy Diffraction Microscopy and Tomography to Assess Phase-Field Fracture Models for Brittle Fracture |
| Author(s) |
Mythreyi Ramesh, Sara Gorske, Blaise Bourdin, Kaushik Bhattacharya, Katherine Faber, Peter Voorhees |
| On-Site Speaker (Planned) |
Mythreyi Ramesh |
| Abstract Scope |
Fracture in polycrystalline materials involves crack interaction with grain boundaries and inclusions. Phase-field models for fracture can predict crack propagation without the need for ad hoc criteria for crack nucleation and branching, which is of particular importance in the context of polycrystalline materials. However, there is a lack of a detailed assessment of predictions of these models with experiments. We perform High Energy Diffraction Microscopy and Tomography experiments to obtain the microstructure and crack paths. We also perform phase-field fracture simulations using the reconstructions from the experiments and compare the predictions. We evaluate the stresses near the crack tips close to grain boundaries, sampled from the five dimensional space for grain boundary degrees of freedom. We use the insights obtained to inform the model parameters. Our assessment will help validate and verify the phase-field models for brittle fracture in polycrystalline materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Mechanical Properties |