| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Understanding and Predicting Dynamic Behavior of Materials
|
| Presentation Title |
On Design Of High-throughput Compact High-explosive Ejecta Source Platform |
| Author(s) |
Fady Najjar, Jose Sinibaldi |
| On-Site Speaker (Planned) |
Jose Sinibaldi |
| Abstract Scope |
Strong shocks in metals reflecting from free surfaces eject particles traveling at hypervelocities. These ejecta particles play a role in a wide range of phenomena from additive manufacturing, inertial confinement fusion, and meteorite impacts. Production, transport, and potential collisions of micron-sized ejecta traveling at velocities of exceeding 1 km/s are of interest. We have developed an ejecta platform using a Hydrodynamics ALE code. It utilizes less than one gram of high explosives (HE) in a cylindrical geometry, the HE pressure accelerates a thin aluminum flyer across a gap to sufficient speeds to generate >20GPa shock pressures in a tin coupon. This produces ejecta that can be either solid or melted upon release from the free surface. Our design methodology will be presented as well as results from recent experimental measurements. Work performed under the auspices of the U.S. DOE by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. LLNL-ABS-780220. |
| Proceedings Inclusion? |
Undecided |