| Experimental Study of the Impact Damage of Composition B and Plastic Bonded Explosive |
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| 作者姓名： | 陈鹏万 黄风雷 丁雁生 |
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| 作者单位： | [1]StateKeyLaboratoryofExplosionandSafetyScience,BeijingInstituteofTechnology,Beijing100081,China [2]InstituteofMechanics,ChineseAcademyofSciences,Beijing100080,China |
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| 基金项目： | theNationalNaturalScienceFoundation(10002022)andJointFoundationofChineseNaturalScienceCommitteeandChineseAcademyofEngineeringPhysics ( 1 0 0 76 0 2 1 ) |
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| 摘 要： | A long-pulse low-velocity gas gun with a gas buffer is used to induce impact damage in cast Composition B and hot pressed PBXN-5. To obtain different damage states, a range of projectile velocities are used by control-ling the launching pressure of gas gun. The stress history during impact loading is recorded. Various methods are used to characterize the damage state of impacted explosive samples. The microstructure is examined by use of scanning electronic microscopy (SEM) and polarized light microscopy (PLM). The densities and ultrasonic atten-uation are also measured. The results show that both Composition B and PBXN-5 exhibit some damage character-istics of brittle materials. However, due to the difference in compositions, PBXN-5 exhibits better resistance to impact loading than Composition B.
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| 关 键 词： | 实验研究 炸药 碰撞损失 微观结构 超声衰减 塑性力学 扫描电子显微镜 SEM 化合物 |
| 收稿时间： | 7/9/2002 12:00:00 AM |
Experimental Study of the Impact Damage of Composition B and Plastic Bonded Explosive |
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| CHEN Peng wan,HUANG Feng lei and DING Yan sheng.Experimental Study of the Impact Damage of Composition B and Plastic Bonded Explosive[J].Journal of Beijing Institute of Technology,2003,12(3):273-277. |
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| Authors: | CHEN Peng wan HUANG Feng lei and DING Yan sheng |
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| Affiliation: | 1. State Key Laboratory of Explosion and Safety Science, Beijing Institute of Technology, Beijing 100081, China
2. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | A long pulse low velocity gas gun with a gas buffer is used to induce impact damage in cast Composition B and hot pressed PBXN 5. To obtain different damage states, a range of projectile velocities are used by controlling the launching pressure of gas gun. The stress history during impact loading is recorded. Various methods are used to characterize the damage state of impacted explosive samples. The microstructure is examined by use of scanning electronic microscopy (SEM) and polarized light microscopy (PLM). The densities and ultrasonic attenuation are also measured. The results show that both Composition B and PBXN 5 exhibit some damage characteristics of brittle materials. However, due to the difference in compositions, PBXN 5 exhibits better resistance to impact loading than Composition B. |
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| Keywords: | explosives impact damage microstructure ultrasonic attenuation |
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