| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
100 Years and Still Cracking: A Griffith Fracture Symposium
|
| Presentation Title |
Quantitative Phase-Field Modeling of Crack Propagation in Multi-Phase Material Based on Griffith’s Fracture Theory |
| Author(s) |
Arezoo Emdadi, Mohsen Asle Zaeem |
| On-Site Speaker (Planned) |
Arezoo Emdadi |
| Abstract Scope |
A quantitative multi-phase-field model based on the regularized formulation of Griffith’s fracture theory is developed to predict crack propagation in homogeneous and heterogeneous brittle materials. The accuracy and transferability of the model are demonstrated by simulating crack propagation and benchmarking against fracture experiments of concrete in the form of fracture of L-shaped plates and wedge splitting tests, and four-point bending of ZrB2-based laminates and fibrous monolithic composites. Additionally, the effective fracture toughness of ZrB2-based ceramics with different engineered microarchitectures are numerically evaluated and validated by experimental results. To demonstrate the capability of the proposed model for study the fracture of polycrystalline systems, intergranular and transgranular crack propagation in ZrB2 bicrystal and polycrystalline systems under tensile loading are studied in detail. The developed multi-phase-field model can quantitatively provide guidelines for designing microscale architectures and properties of different phases to promote crack deflection and increase the fracture toughness in multi-phase brittle materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, ICME, Ceramics |