About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Assessment of Phase-field Simulations of Brittle Fracture Using High Energy Diffraction Microscopy and Tomography |
Author(s) |
Mythreyi Ramesh, Sara Gorske, Blaise Bourdin, Kaushik Bhattacharya, Katherine Faber, Peter Voorhees |
On-Site Speaker (Planned) |
Mythreyi Ramesh |
Abstract Scope |
Crack propagation in polycrystalline materials is dictated by microstructural features like grain boundaries, triple junctions, and secondary phases. Phase-field simulations have emerged as a powerful way to study crack propagation during fracture, particularly when the crack morphology is complex. However, there remains a lack of a rigorous assessment and experimental validation of phase-field fracture simulations in polycrystalline materials. We address this need by using microstructures of AlON samples obtained from high-energy diffraction microscopy as initial conditions for phase-field fracture simulations. We determine the driving force for crack propagation through the polycrystalline microstructure, considering the orientation dependence of elasticity and toughness in each grain, and investigate the mechanism for crack propagation through grain boundaries. Our analysis would enable comparisons to be made between the simulated and experimental crack paths in polycrystalline materials. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Mechanical Properties, Characterization |