Investigation of Shock Pressure Evolution of Initiation in IHE's JB9014 at Ambient and -54 ℃
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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 ℃.
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Key words:
- JB9014 explosive /
- shock initiation /
- pressure evolution /
- shock sensitivity /
- manganin gauge
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