Investigation of Shock Pressure Evolution of Initiation in IHE's JB9014 at Ambient and -54 ℃
-
摘要: 应用锰铜压力计对钝感高能炸药JB9014在常温和-54 ℃下冲击起爆压力场的发展进行了实验研究。在-54 ℃下压力场的发展图像揭示出JB9014炸药遵循均质炸药起爆机理,而常温下的这种图像表明其兼备均质和非均质炸药起爆机理;在-54 ℃下JB9014炸药的冲击感度比常温下低得多;无论是在常温下还是在-54 ℃低温下,JB9014炸药的冲击感度均比具有相同TATB/粘结剂配比的PBX-9502炸药的低。Abstract: The pressure evolution of shock initiation for IHE's JB9014 at ambient and -54 ℃ was investigated experimentally using embedded manganin gauges. The pressure evolution observed in JB9014 at -54 ℃ shows homogeneous initiation mechanism, by comparison, these observed in JB9014 at ambient temperature show a combination of homogeneous and heterogeneous initiation mechanism. The results show that JB9014 at -54 ℃ becomes significantly less sensitive to shock than at ambient temperature and that JB9014 is less shock sensitive than PBX-9502 with same TATB/binder ratio at both ambient temperature and -54 ℃.
-
Key words:
- JB9014 explosive /
- shock initiation /
- pressure evolution /
- shock sensitivity /
- manganin gauge
-
Asay B W, McAfee J M. Temperature Effects on Failure Thickness and the Deflagration-to-Detonation Transition in PBX-9502 and TATB [A]. Paper Summaries of the Tenth International Detonation Symposium [C]. Boston, MA, 1993: 485-489. Schwartz A C. Flyer Plate Performance and Initiation of Insensitive Explosives by Flyer Plate Impact [R]. SAND75- 0461, 1975. Seitz W L, Wacherle J. Prompt Initiation Studies of PBX-9502 and PBX-9503 [A]. 5th Annual Joint Firing System Conference [C]. 1980. Scheloske R, Green L, Weingart R. Sensitivity of Triaminotrinitrobenzene (TATB) at Elevated Temperature [R]. UCRL-18336, 1980. Campbell A W. Diameter Effect and Failure Diameter of a TATB-Based Explosive [J]. Propellants, Explosives and Pyrotechnics, 1984, 9: 183-187. Dallman J D, Wackerle J. Temperature-Dependent Shock Initiation of TATB-Based High Explosives [A]. Paper Summaries of the Tenth International Detonation Symposium [C]. Boston, MA, 1993: 130-138. Urtiew P A, Erickson L M, Aldis D F, et al. Shock Initiation of LX-17 as a Function of Its Initial Temperature [A]. Proceedings of the Ninth Symposium (International) on Detonation [C]. Arlington, Virginia: 0CNR, 1989: 112-122. Urtiew P A, Cook T M, Maienschein J L, et al. Shock Sensitivity of IHE at Elevated Temperature [A]. Paper Summaries of the Tenth International Detonation Symposium [C]. Boston, MA, 1993: 139. Urtiew P A, Tarver C M, Maienschein J L, et al. Effect of Confinement and Thermal Cycling on the Shock Initiation of LX-17 [J]. Combustion and Flame, 1996, 105: 43-53. Mulford R N, Alcon R R. Shock Initiation of PBX-9502 at Elevated Temperature [A]. Schmidt S C, Dandekar D P, Forbes J W. Shock Compression of Condensed Matter-1995 [C]. Woodbuiy, NY: American Institute of Physics, 1995: 855-862.
点击查看大图
计量
- 文章访问数: 8130
- HTML全文浏览量: 555
- PDF下载量: 796