Bulletin of the American Physical Society
20th Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter
Volume 62, Number 9
Sunday–Friday, July 9–14, 2017; St. Louis, Missouri
Session F3: Energetic and Reactive Materials: SDT and EOS |
Hide Abstracts |
Chair: Kyle Ramos, Los Alamos National Laboratory Room: Grand Ballroom FG |
Monday, July 10, 2017 5:00PM - 5:15PM |
F3.00001: Ultrafast Shock Interrogation of Polycrystalline RDX Samuel D. Park, Michael R. Armstrong, Ian T. Kohl, Joseph M. Zaug, Robert Knepper, Alexander S. Tappan, Sorin Bastea, Jeffrey J. Kay Understanding shock initiation of energetic materials requires the ability to diagnose the state of materials on the picosecond time scale of shock compression. Ultrafast shock interrogation (USI) probes the thermodynamic state of the material on this time scale using linearly chirped ultrafast pulses and spectral interferometry. We present the first USI measurements on polycrystalline RDX and compare them to previously reported gas gun results on single crystal RDX. New features are observed in shock compression of polycrystalline RDX that are not present in the previously reported single crystal data; these features and their implications will be discussed. [Preview Abstract] |
Monday, July 10, 2017 5:15PM - 5:30PM |
F3.00002: Gas gun experiments and numerical simulations on the HMX-based explosive PBX 9501 in the overdriven 30 to 120 GPa pressure regime E. R. Pittman, R. L. Gustavsen, C. R. Hagelberg, J. H. Schmidt The focus of this set of experiments is the development of data on the Hugoniot for the overdriven products equation of state (EOS) of PBX 9501 (95 weight {\%} HMX, 5 weight {\%} plastic binder) and to extend data from which current computational EOS models draw. This series of shots was conducted using the two-stage gas-guns at Los Alamos and aimed to gather data in the 30 to 120 GPa pressure regime. Experiments were simulated using FLAG, a Langrangian multiphysics code, using a one-dimensional setup which employs the Wescott Stewart Davis (WSD) reactive burn model. Prior to this study, data did not extend above 90 GPa, so the new data allowed the model to be re-evaluated. A comparison of the simulations with the experimental data shows that the model fits well below 80 GPa. However, the model did not fall within the error bars of the data for higher pressures. This is an indication that the PBX 9501 overdriven EOS products model could be modified to better match the data. [Preview Abstract] |
Monday, July 10, 2017 5:30PM - 5:45PM |
F3.00003: One dimensional shock Initiation of UK Comp B. Malcolm Burns Ten shock initiation experiments have been carried out on the UK isostatically pressed Composition B (59.5{\%} RDX, 39.5{\%} TNT, 1{\%} wax) comprising of seven sustained pulse experiments with input pressures ranging from 2.89 to 9.86 GPa and three short shock experiments using the embedded gauge technique at the Los Alamos National Laboratory gas gun facility. The evolution of the reactive growth at and behind the shock front has been measured along with the run to detonation distance. These data have been used to create the Pop plot and hugoniot states for the UK Comp B. The shock initiation behavior of the UK Comp B has been compared to that of the equivalent US Composition. The reactive growth shows a feature that was observed in the US composition in which the wave profiles dispay a high level of pre-detonation noise. This was hypothesized to be due to a piezoelectric effect in the RDX crystals. The results of these experiments have shown that this effect may be localized in the gamma phase at shock pressures in the region of 5 GP and above. [Preview Abstract] |
Monday, July 10, 2017 5:45PM - 6:00PM |
F3.00004: Shock Initiation of Wedge-shaped Explosive Measured with Smear Camera and Photon Doppler Velocimetry Yan Gu Triaminotrinitrobenzene (TATB) is an important insensitive high explosive in conventional weapons due to its safety and high energy. In order to have an insight into the shock initiation performance of a TATB-based insensitive high explosive (IHE), experimental measurements of the particle velocity histories of the TATB-based Explosive using Photon Doppler Velocimetry and shock wave profile of the TATB-based explosive using High Speed Rotating Mirror Smear Camera had been performed. In this paper, we would describe the shock initiation performance of the TATB-based explosive by run-to-detonation distance and the particle velocity history at an initialization shock of about 7.9 GPa. The parameters of hugoniot of unreacted the TATB-based explosive and Pop relationship could be derived with the particle velocity history obtained in this paper. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700