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 |
Advances in Micromechanics and Digital Twin Modeling of Concrete and Geologic Materials Aided by In-situ Tomography and 3D X-ray Diffraction |
Author(s) |
Ryan C. Hurley, Mohmad Mohsin Thakur, Ghassan Shahin |
On-Site Speaker (Planned) |
Ryan C. Hurley |
Abstract Scope |
Concrete and rocks are characterized by significant structural heterogeneity. Under mechanical loading, this structural heterogeneity gives rise to stress heterogeneity and complex load sharing between phases. Complex micromechanics remains an area of active research. Digital twin modeling offers some promise for exploring this complexity using a digital testbed. Here, we describe two thrusts of our research related to stress heterogeneity and digital twin modeling. First, we describe the development and use of small-scale samples and testbeds for studying structure, grain-resolved stress tensors, and intra-grain stress fields in mechanically-compressed concrete and rocks using in-situ x-ray tomography, 3D x-ray diffraction (far-field high energy diffraction microscopy), and scanning 3D x-ray diffraction. We discuss the insight these measurements provide regarding stress heterogeneity and load sharing between phases. Next, we discuss the construction and use of digital twin models for concrete that are validated with the multi-modal x-ray measurements. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Modeling and Simulation, Composites |