EXPERIMENTS TO DETERMINE THE RELATIVE PERFORMANCE OF LAYERED JET-STOPPERS

摘要

At AWE, jet-stoppers are employed to mitigate the threat of high velocity metal jets from explosive assemblies. The jet-stoppers commonly employed in both chambers and vessels consist of alternating layers of mild steel and glass. Hydrocode models used to predict jet penetration require validated material models and therefore experimental data is required for validation purposes. Experiments were conducted using copper lined shaped charges fired into a variety of layered jet-stopper configurations including different thicknesses of steel plate, layers of steel and glass or layers of steel and aluminium alloy. The results indicate that thicker steel plates are more effective than thinner steel plates for arresting the jet. The use of alternating steel and glass layers is highly effective and greatly reduces the overall penetration depth. Replacing the glass with aluminium alloy produced a much higher penetration depth.