| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
|
| Presentation Title |
Evaluating phase-field simulations of brittle fracture in polycrystalline materials |
| Author(s) |
Mythreyi Ramesh, Sara Gorske, Blaise Bourdin, Kaushik Bhattacharya, Katherine Faber, Peter Voorhees |
| On-Site Speaker (Planned) |
Mythreyi Ramesh |
| Abstract Scope |
Fracture is a catastrophic failure mechanism of materials which involves the interaction of the crack with microstructural heterogeneity like grain boundaries and inclusions. Phase-field fracture models can be used to simulate complex crack morphology, but there remains a need for a thorough assessment of these models when predicting crack propagation in polycrystalline materials. To address this gap, we use high-energy diffraction microscopy (HEDM) and tomography experiments to overlay the crack path and the underlying microstructure. By performing bicrystal simulations, we compute the stress state of the crack near grain boundary like interfaces, particularly when there is elastic contrast and anisotropy. We also perform phase-field fracture simulations on microstructures obtained from the HEDM experiments and compare the simulated crack paths with those experimentally obtained. Our analysis will enable the assessment of the phase-field fracture model in predicting brittle fracture in polycrystalline materials. |
| Proceedings Inclusion? |
Planned: |