| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Understanding and Predicting Dynamic Behavior of Materials
|
| Presentation Title |
Modelling the Effect of Microstructure on Elastic Wave Propagation in Platelet-reinforced Composites and Ceramics |
| Author(s) |
Hortense Le Ferrand |
| On-Site Speaker (Planned) |
Hortense Le Ferrand |
| Abstract Scope |
Ceramics and ceramic-reinforced composites are the gold standard for impact resistance in harsh environments. To improve vibration resistance, the orientation of reinforcing microparticles can be locally controlled to build periodic structures via recent manufacturing strategies based on magnetic manipulation. Here, we propose a modelling tool to select the potentially best microstructure design that would dissipate mechanical energy via elastic wave scattering. This phenomenon has been observed in periodic composite laminates and in biomaterials like the dactyl club of the mantis shrimp. Based on an analytical model, we determine the frequency bandgaps associated to periodic architectures and investigate the influence of microstructural parameters such as inclusion concentration, orientation and pitch. The results are used to define guidelines for the future fabrication of hard bulk ceramic materials that combine traditional ceramic’s properties with high vibration resistance. |
| Proceedings Inclusion? |
Undecided |