Link al artículo: https://iopscience.iop.org/article/10.1088/1742-6596/1221/1/012059
A mechanical shock or impact sensor system for teaching purposes was developed and characterized. The device consists of Mylar layers confined by aluminum sheets. The metallic surfaces are wired in order to send their signals to a digital oscilloscope. The instrument receives voltage variations after the surface of the transducer is stroked by a plastic projectile (capsule mass: 50 g) released in free fall (heights: 0.15-3 m). The respective piezoelectric constant was determined to be d = 42.02±10−12 m/V. This proposed experiment can be attractive for a basic instrumentation course which combines both theoretical and experimental concepts of mechanics and materials sciences.