About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2026 - In-Situ Characterization Techniques
|
| Presentation Title |
Microstructural evolution of particulate explosive materials in drop-weight experiments below reaction regime |
| Author(s) |
Alexandra Burch, Jeremiah Moore, Milovan Zevevic, Marc Cawkwell, Virginia Manner |
| On-Site Speaker (Planned) |
Alexandra Burch |
| Abstract Scope |
The drop-weight impact test is a common measurement of explosive sensitivity, measuring the height from which an energetic reaction is expected with 50% probability, calculated from several impact tests with outcomes recorded as “go” or “no go”. With this qualitative binary as the primary observation, the mechanisms influencing initiation and propagation are not well understood. Recent studies have gained insight into a more detailed mechanistic understanding of these tests using transparent anvils and high-speed imaging for in-situ visualization of material impact and subsequent explosive reaction. Here, this setup was used to impact particulate explosives from drop heights below their accepted 50% threshold to evaluate microstructural evolution resulting from impact when the sample was unreacted. High-speed imaging was used to monitor the state of the explosive immediately before, during, and after impact, and SEM imaging was used to capture the microstructure of the material before and after impact. |
| Proceedings Inclusion? |
Planned: |