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| 炸药冲击损伤的实验研究 | |
| 引用本文： | 陈鹏万,丁雁生,何松伟,黄风雷,陈力.炸药冲击损伤的实验研究[J].含能材料,2003,11(1):13-17. |
| 作者姓名： | 陈鹏万 丁雁生 何松伟 黄风雷 陈力 |
| 作者单位： | 1. 北京理工大学爆炸灾害预防与控制国家重点实验室,北京,100081 2. 中国科学院力学研究所,北京,100080 3. 中国工程物理研究院化工材料研究所,四川,绵阳,621900 |
| 基金项目： | 国家自然科学基金(10002022)，国家自然科学基金委员会和中国工程物理研究院联合基金(10076021) |
| 摘 要： | 采用低速气炮对B炸药和PBXN—5高聚物粘结炸药进行冲击损伤加载。通过控制弹速对试样进行不同程度的损伤，同时记录冲击加载过程中应力变化过程。对冲击损伤形貌进行显微观察，同时对冲击损伤前后试样密度和声衰减进行测量。结果表明，B炸药和PBXN—5炸药均表现出脆性材料的损伤特征，但其材料组成上的不同也导致了二者损伤特征有所差异。 |
| 关 键 词： | 冲击损伤 低速气炮 B炸药 PBXN—5炸药 脆性材料 细观结构 |
| 文章编号： | 1006-9941(2003)00-0013-05 |
| 收稿时间： | 2002/10/8 0:00:00 |
| 修稿时间： | 2002年10月8日 |
Experimental Study on the Impact Damage of Selected Explosives |
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| CHEN Peng-wan,DING Yan-sheng,HE Song-wei,HUANG Feng-lei and CHEN Li.Experimental Study on the Impact Damage of Selected Explosives[J].Chinese Journal of Energetic Materials,2003,11(1):13-17. | |
| Authors: | CHEN Peng-wan DING Yan-sheng HE Song-wei HUANG Feng-lei and CHEN Li |
| Affiliation: | National Key Laboratory of the Prevention and Control of Explosion Disaster, Beijing Institute of Technology, Beijing 100081, China;;Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;;Institute of Chemical Materials, CAEP, Mianyang 621900, China;National Key Laboratory of the Prevention and Control of Explosion Disaster, Beijing Institute of Technology, Beijing 100081, China;;Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China; |
| Abstract: | The study of damage mechanisms and its evolution of explosives is of great importance for the safety evaluation of explosive materials. A long-pulse low-velocity gas gun with a gas buffer was used to impact explosive samples. The explosives used include cast Comp. B and hot pressed PBXN-5. Different projectile velocities were used to achieve different damage degree in samples and the stress history of samples in the process of dynamic loading was recorded. The microstructure of samples before and after impact were studied by use of Scanning Microscopy (SEM) and Polarized Light Microscopy (PLM). In addition, the density and ultrasonic wave attenuation of samples before and after impact loading were examined. The results show that both Comp. B and PBXN-5 exhibit similar damage characteristics of brittle materials. However, due to the difference in compositions, Comp. B and PBXN-5 also exhibit different damage characteristics. |
| Keywords: | explosive damage low velocity impact microstructure |
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