| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Effects of Micro- and Macro-scale Heterogeneities on Spall Failure of Materials |
| Author(s) |
Greg Kennedy, Taylor Sloop-Cabral, Katie Koube, Andrew Boddorff, Josh Kacher, Naresh N. Thadhani |
| On-Site Speaker (Planned) |
Naresh N. Thadhani |
| Abstract Scope |
Spall failure is caused by tensile stresses resulting from interactions of release waves generated by Impact-induced shock waves reflecting off free surfaces. Macro- and micro-scale heterogeneities interacting with shock waves can result in energy dissipation, or strain gradients serving as possible sites for void/crack nucleation leading to incipient or complete fracture. This presentation will focus on spall failure studies of effects of macro- and micro-scale heterogeneities, including wavy/planar and flat/slanted macro-scale interfaces in bimetallic Cu-Ni alloys, porosity in AM fabricated 316L SS, and compositional variations along different orientations of forged AF96 steel. Multi-probe PDV measurements of velocity profiles and multi-sample target assemblies with soft-recovery capabilities, are used to capture the effects of the micro- and macro-scale heterogeneities on shock rise time, Hugoniot Elastic Limit, σHEL, and spall strength, σSPALL, in addition to characteristics of nucleation- or growth-dominated fracture processes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |