Home – Home – Jornals – Combustion, Explosion and Shock Waves 2020 number 3

To measure the temperature of the shaped-charge jet, three-layer copper-copper-Constantan liners consisting of a solid copper conical shell with an apex angle of 45 ^oC, a wall thickness of 1.5 mm and a pressed-in shell folded from a 1.0 mm thick copper sheet explosively cladded on the inside with a Constantan layer 0.5 mm thick. Then the Constantan layer was partially removed so that only the upper third of the inner surface of the shells remained coated with Constantan. The thickness of the Constantan layer was chosen so that the nose of the shaped-charge jet consisted only of Constantan, and the jet tail of copper, which was determined from a microsection of the recovered slug. As a result, a copper-Constantan thermocouple was formed. At the moment of collision of the bimetallic jet with a target, an oscilloscope measured a thermo-EMF signal. The obtained thermo-EMF corresponds to a temperature of 800 ± 80 ^oC.