Double Layered 2-D PVDF Film Based Flexible Sensor for Detection of Micro-Space-Debris: Impact Velocity, Angle, and Spot

Targeting detection of micro-space-debris in Earth orbit, a double layered two-dimensional (2-D) polyvinylidene fluoride (PVDF) sensor is designed, with the use of the polarized PVDF piezoelectric film, to identify the projectile diameter and impact spot, velocity and angle of micro-debris. The double layered 2-D PVDF sensor developed by employing resistive charge division, i.e., a set of conducting strips on the front surface and an orthogonal set on the back surface of each layer. Each aluminum foil is connected to an external resistance respectively, and with the design of corresponding hardware circuit to constitute a double layered 2-D PVDF sensor. Hypervelocity impact (HVI) experiments are implemented with a two-stage light gas gun to verify the designed double layered 2-D PVDF sensor. The results show that the designed sensor can be used to characterize the parameter of space debris.