About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
G-16: Influence of Microstructure on Radial Expansion of 4340 SS Cylinders |
Author(s) |
Carl P. Trujillo, Saryu Fensin, George T. Gray |
On-Site Speaker (Planned) |
Carl P. Trujillo |
Abstract Scope |
Expanding cylinder techniques are useful methods of investigating dynamic fracture properties under a wide range of strains and strain rates. In this study, a gas-gun technique is used to achieve uniform radial expansion of a cylinder. This expansion is driven by the impact of a polycarbonate projectile (velocities up to 1000m/s) impacting a stationary polycarbonate cylinder within the specimen cylinder. This study aims to understand the dynamic expansion and fragmentation of additively manufactured 4340 SS in comparison to wrought 4340 SS. A combination of in-situ diagnostics was used to measure strain, strain rates, and temperature: High Speed Imaging, Photon Doppler Velocimetry (PDV), Digital Imaging Correlation (DIC), and a High-Speed IR Camera. Post mortem microscopy of the specimen and fractured segments was also performed to understand differences in failure. |
Proceedings Inclusion? |
Planned: |