| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Ceramics and Glasses Modeling by Simulations and Machine Learning
|
| Presentation Title |
D-9: Discrete Element Simulation of Delamination in Thermal Barrier Coating |
| Author(s) |
Yafeng Li, Zhengzhao Ji, Jing Zhang |
| On-Site Speaker (Planned) |
Yafeng Li |
| Abstract Scope |
In this work, we present a discrete element (DE) model to simulate the coating delamination behaviors in thermal barrier coatings (TBCs) during indentation test. In the DE model, the linear parallel bond model is first calibrated with the experimental properties from the literature. Then both the 2D Vickers and Rockwell micro-indentation tests were simulated with layered coating microstructures. The model results reveal that the coating interface delimitation has two distinctive stages, i.e., crack initiation and propagation. Additionally, TBC systems with a thicker top are more susceptible to delamination due to less strain compliance. |