The effect of transverse shock propagation on the shock-to-detonation transition process for an insensitive explosive

摘要: Abstract The one-dimensional (1D) shock-to-detonation transition process has been studied extensively for PBX 9502, resulting in a good ability to predict the time or distance detonation over range of planar input shock pressures. results are often represented as run versus pressure on Pop plots. In practice, however, shocks explosives not 1D. Instead, they may be oblique non-planar. Here, we present from series experiments which 9502 slab was bonded one side 9501 slab. faster drove an 9502. result two-dimensional (2D) structure consisting region delayed reaction, referred initiating layer, immediately adjacent 9501/9502 interface, and further interface. layer thickness varied with pressure, controlled by layer. seven such tests presented run-time input-shock-pressure space compared plots generated data 1D experiments. Good agreement observed, 2D showing similar run-times detonation, but more scatter given pressure. correlation between suggests transverse component does have significant effect initiation physics.