About this Abstract |
Meeting |
2023 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 Fracture Simulations of Brittle Fracture in Polycrystalline Materials |
Author(s) |
Mythreyi Ramesh, Sara F. Gorske, Jean-Michel Scherer, Blaise Bourdin, Kaushik Bhattacharya, Katherine T. Faber, Peter W. Voorhees |
On-Site Speaker (Planned) |
Mythreyi Ramesh |
Abstract Scope |
Fracture is an important failure mechanism involving an interplay of phenomena across length scales spanning several orders of magnitude. Many experimental and computational techniques have been developed to study fracture at different length scales. The phase-field (PF) method for fracture is a powerful technique because of its ability to capture complex crack morphologies without any <i>ad hoc</i> criteria for nucleation or branching of cracks. However, there is a lack of systematic validation studies that compare PF fracture simulations in polycrystalline materials with experiments. We attempt to bridge this gap by comparing high-energy diffraction microscopy and tomography experiments to PF simulations starting with the same microstructure. We focus on the crack propagation paths near features like grain boundaries and triple junctions, which will clarify the impact of the diffuse treatment of the cracks in PF methods and allow the mechanical properties of grain boundaries to be estimated. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Modeling and Simulation, Characterization |