Preliminary investigations of HE performance characterization using SWIFT

18th APS-SCCM; 24th AIRAPT

Murphy, M.J.^1 ; Johnson, C.E.^1

W-6 Detonator Technology, Los Alamos National Laboratory, Los Alamos

NM

87545, United States^1

关键词: Charge diameter;    Detonation wave velocity;    High explosives;    Performance characterization;    Shock pressure;    System records;    Test analysis;    Time-resolved image;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/14/142024/pdf
DOI  :  10.1088/1742-6596/500/14/142024

来源: IOP

【 摘 要 】

Preliminary experiments are performed to assess the utility of using the shock wave image framing technique (SWIFT) to characterize high explosive (HE) performance on detonator length and time scales. Columns of XTX 8004, an extrudable RDX-based high explosive, are cured directly within polymethylmethacrylate (PMMA) dynamic witness plates, and SWIFT is employed to directly visualize shock waves driven into PMMA through detonation interaction. Current experiments investigate two-dimensional, axisymmetric test geometries that resemble historic aquarium tests, but on millimeter length scales, and the SWIFT system records 16-frame, time-resolved image sequences at 190 ns inter-framing. Detonation wave velocities are accurately calculated from the time-resolved images, and standard aquarium-test analysis is evaluated to investigate calculated shock pressures at the HE/PMMA interface. Experimental SWIFT results are discussed where the charge diameter of XTX 8004 is varied from 2.0 mm to 6.5 mm.