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Back Cover: Effect of Temperature on Shock Initiation of RDX‐Based Aluminized Explosives (Prop., Explos., Pyrotech. 12/2019)
Author(s) -
Zhao Pin,
Chen Lang,
Yang Kun,
Geng Deshen,
Lu Jianying,
Wu Junying
Publication year - 2019
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201981204
Subject(s) - explosive material , manganin , materials science , shock (circulatory) , softening , sensitivity (control systems) , ignition system , composite material , thermodynamics , chemistry , calibration , medicine , organic chemistry , engineering , statistics , mathematics , physics , electronic engineering
The cover picture shows a shock initiation test on explosively driven flyer‐initiated heated explosive to investigate the effect of temperature on shock initiation of RDX‐based aluminized explosives. The pressure histories at different depths inside the explosives were measured by using manganin pressure gauges. The ignition and growth reaction model, some parameters of which rely on temperature, was used to simulate the shock‐initiation processes. The relationship between the model parameters and the temperature were obtained from the experimental results, and the reaction degree of the explosives were determined. The results indicated that binder softening and the increasing sensitivity of RDX are the two main reasons that change the shock sensitivity of RDX‐based aluminized explosives. For 25 °C–110 °C, the shock sensitivity decreases with an increase in temperature, mainly because of binder softening. However, for 110 °C–170 °C, the shock sensitivity increases with an increase in temperature, which depends on the increasing sensitivity of RDX. Details are discussed in the paper titled “Effect of Temperature on Shock Initiation of RDX‐Based Aluminized Explosives” by Pin Zhao et al. on page 1562 ff.