IMECH-IR  > 力学所知识产出(1956-2008)
An experimental study on the impact damage of explosives
Chen PW; Huang FL; Ding YS(丁雁生)
Source PublicationProcess in Safety Science and Technology Part B
Conference NameProgress in Safety Science and Technology
Conference DateOctober 10, 2002 - October 13, 2002
Conference PlaceTaian, China
AbstractDamage not only deteriorates the mechanical properties of explosives, but also influences the sensitivity, combustion and even detonation properties of explosives. The study of formation mechanisms and evolution rule of damage, and the influences of damage on explosives is of great importance for safety evaluation of explosive materials. An experimental study of impact damage in cast Composition B and hot pressed PBXN-5 is presented in this paper. A long-pulse low-velocity gas gun with a gas buffer is used to induce dynamic damage in samples. The projectile velocities and stress history in impact loading are recorded. The microstructure evolution before and after impact are examined by use of Scanning Electronic Microscopy (SEM) and Polarized Light Microscopy (PLM). In addition, the densities and ultrasonic attenuation of undamaged and damaged explosives are measured. The results show that both Composition B and PBXN-5 exhibit brittle damage characteristics. However, due to the difference in compositions, PBXN-5 exhibits better resistance to dynamic loading than Composition B.
KeywordImpact Damage Polarized Light Microscopy
WOS ID WOS:000179871800272
Indexed ByCPCI-S ; EI
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
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GB/T 7714
Chen PW,Huang FL,Ding YS. An experimental study on the impact damage of explosives[C]Process in Safety Science and Technology Part B,2002.
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