An experimental and numerical approach - characterisation of power cartridge for water-jet application

Abstract

Abstract Power Cartridges are pyrotechnic devices where hot combustion gases utilized to do mechanical work for disruption of suspected Improvised Explosive Devices (IEDs). It plays a vital role either in destroying the suspicious object or making them non-functional by generating the gas pressure on burning of propellant against the water column inside the barrel. Present work is focused on characterisation, numerical solution such as deformation; strain; stress using FEM (Finite Element Method), design qualification, performance and evaluation of power cartridge for disruptor application. Experimental trials for pressure - time (P-t) measurement in closed vessel (CV), various electrical parameters like all fire current (AFC), no fire current (NFC) and ignition delay have been measured. Further, mechanical properties for brass material have been determined. An attempt has been made to characterise the power cartridge by FEM and carrying out the experiments for water-jet application.