Small-scale chamber test for internal blast performance

18th APS-SCCM; 24th AIRAPT

Lee, Richard J.^1 ; Felts, Joshua E.^1 ; Watry, Craig^2 ; Gonzales, Andrea^2

Naval Surface Warfare Center, Indian Head EOD Technology Division Indian Head, MD

20640, United States^1

Applied Research Associ., Albuquerque Division, 4300 San Mateo Blvd NE, Albuquerque

NM

87110, United States^2

关键词: Chamber tests;    Gram scale;    Internal blasts;    Most likely;    Quasi-static pressure;    Small scale;    Test chambers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/18/182024/pdf
DOI  :  10.1088/1742-6596/500/18/182024

来源: IOP

【 摘 要 】

The viability of using gram-scale amounts of explosives in a small test chamber to assess internal blast performance and predict effects at larger scales is investigated. Peak quasi-static pressures from five explosive formulations were measured, and energy released per gram was calculated. The smaller test used 12-g charges loaded in a steel holder, while data selected from the larger test was from bare charges between 2.7 and 21 kg. The energies for a given explosive were comparable for each size charge tested in the larger chamber. In the smaller chamber the energies were less, most likely due to heat losses to the holder. Explosives with the highest concentration of explosive ingredients incurred the highest energy losses in the small chamber. The current design of the smaller test provides a reasonable ranking of explosives with similar concentrations of explosive ingredients, thereby validating the use of the test for the newer explosives being assessed. However, it may be possible to obtain consistent rankings for all explosives given a change to the holder design in the smaller test.