Effects of large-sized granules on ignition and burning of powdery explosives under drop-weight impacts

Yan-qing Wu; Hong-fu Guo; Feng-lei HuangXiao-wei Bao

首页> 外文期刊>Combustion science and technology >Effects of large-sized granules on ignition and burning of powdery explosives under drop-weight impacts

【24h】

Effects of large-sized granules on ignition and burning of powdery explosives under drop-weight impacts

机译：Effects of large-sized granules on ignition and burning of powdery explosives under drop-weight impacts

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Drop-weight impact experiments are performed on a thin layer of cyclotetramethylenete tranitramineand cyclotrimethylene trinitra-mine (RDX) powdery explosives, which were mixed with a few large-sized explosive or NaCl salt granules. The drop-weight impact machine is equipped with the high-speed photographic systems for observing the impact process. It showed that the mixed explosives are more sensitive than pure powdery explosives. Hard salt particles could greatly enhance the burning probability of powdery explosives because frictional heat between salt particles and target explosive powders, stress concentration, and new generated fragments of large granule jointly contribute to heat accumulation at the junction of dissimilar materials. Burning front always initiates at the interface of powdery explosive and additive granule. Adiabatic shear bands were frequently observed in the mixture of ultra-fine RDX powdery explosive with RDX large granules, which mainly resulted from the softening effect of ultra-fine powders once the temperature arises.

著录项

来源
《Combustion science and technology》 |2023年第8期|1698-1706|共9页
作者
Yan-qing Wu; Hong-fu Guo; Feng-lei HuangXiao-wei Bao;
展开▼
作者单位

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, China;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类
关键词
Drop-Weight Impact; Powdery Explosives; Large-Sized Granules; Salt Particle; Sensitivity;

Effects of large-sized granules on ignition and burning of powdery explosives under drop-weight impacts

摘要

著录项

相关主题

期刊订阅