| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure-Property Relationships in Molecular Crystal Deformation
|
| Presentation Title |
The ultimate strength of plastic bonded explosives under uniaxial stress compression at strain-rates beyond 1000 /s |
| Author(s) |
Bryan Zuanetti, Cindy Bolme, Claudine Armenta, Erik Vettergren, Kyle Ramos |
| On-Site Speaker (Planned) |
Bryan Zuanetti |
| Abstract Scope |
Plastic bonded explosives (PBX) experience a range of thermomechanical conditions during transportation, processing, and deployment. These conditions include thermal cycling and dynamic strain-rates. Therefore, the mechanical characterization of PBXs under a range of strain-rates is essential for assessing the integrity of components throughout their lifetime. Historically, PBX materials have been characterized under strain-rates of (0.00001–0.01/s) with load frames, and limited dynamic strain-rates of around 1000/s with full-scale Kolsky bars, leaving a limitation in the data at strain-rates beyond 1,000/s and below shock loading. To address this, we have performed miniature Kolsky bar experiments to characterize the response of several PBX materials (e.g., PBX 9501, 9502) at strain-rates of up to 10,000/s. The results from these experiments show an enhanced rate-sensitivity of the strength at high strain-rates for all the materials tested. The transition in the failure strength from moderate-to-enhanced rate-sensitivity and potential mechanisms for this phenomenon will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, |