High-speed spherical solid registration by the use of piezoelectric composite films

Polarized composite polymer-ceramic films as electric pulses detector of high-speed solids were designed and studied. Films were made of the silicon rubber loaded with modifying agents and piezoelectric ceramic powder. The electrical film responses to impacts of 4–10 mm steel balls accelerated from 0.5 to 2.0 km/s were measured. The gauge generated pulses with rather high amplitude (tens of volts on 50 Ohm resistance) and high time resolution (∼1 μs) between impacts of solids. The pulse amplitude depends on impactor velocity and its diameter. The gauges are suitable for operating under high temperature.