| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Real Time Studies of the Mechanics of Spherical Microparticles |
| Author(s) |
Lewei He, Xuchen Wang, David Veysset, Mostafa Hassani |
| On-Site Speaker (Planned) |
Mostafa Hassani |
| Abstract Scope |
Recent advances in real-time imaging of deformation at microscale have opened unique opportunities for studies of complex behavior of materials. When further combined with computational modeling, a comprehensive understanding of material mechanics and physics can be developed. This talk will survey recent examples where the above nexus proves successful. In the first example, we resolve quasi-static and impact-induced deformations of spherical metallic microparticles using scanning electron microscope and high-speed camera, respectively. We use in-situ observations and finite element simulations to identify material parameters and describe deformation mechanics of the microparticles. Next, we use time-resolved imaging and finite element simulations of metallic microparticles impacting metallic substrates to understand the transition from rebound to bonding. The transition which occurs beyond a threshold velocity is critical for material buildup during kinetic deposition. We develop a unified framework to predict the threshold bonding velocity for different combinations of microparticle and substrate materials. |
| Proceedings Inclusion? |
Planned: |