About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanics at the Extremes: Bridging Length-Scales From Nanoscale to Bulk
|
| Presentation Title |
Hypervelocity Impact-Induced Crater Formation and Subsurface
Damage in Granite |
| Author(s) |
Xingyuan Zhao, Zhifei Deng, Brett Kuwik, Justin Moreno, Ryan Hurley, Todd Hufnagel |
| On-Site Speaker (Planned) |
Xingyuan Zhao |
| Abstract Scope |
Granite is the most common crustal rock and is often subjected to extreme dynamic loads, such as asteroid impacts. A quantitative understanding of its deformation and damage mechanisms under elevated strain rates is essential for predicting material response. This work reports a systematic investigation of damage under different levels of projectile kinetic energy on thick and thin Westerly granite cuboids using metal spheres between 1 km/s and 3 km/s. We utilize ultra-high-speed optical imaging and flash X-ray imaging to capture the in-situ formation of craters and ejecta. We assess the size and shape of the impact craters and map the subsurface damage using high-resolution X-ray computed tomography. The change of transient ejecta cone angles and ejecta velocities correlates with the on-site deformation mechanism of the impact surface, including spallation and fragmentation, at different kinetic energy levels. These findings provide insights into impact-induced damage processes in geomaterials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, |