Open AccessElectromechanical characterization of didactical piezoelectric sensors based on crystalline grade PET
Author(s) -
Vicente Torres Zúñiga,
Saulo Gonzalo Carmona,
Omar G. Morales Saavedra
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1221/1/012059
Subject(s) - oscilloscope , piezoelectricity , characterization (materials science) , transducer , materials science , projectile , instrumentation (computer programming) , shock (circulatory) , accelerometer , acoustics , electrical engineering , voltage , nanotechnology , physics , computer science , engineering , composite material , medicine , metallurgy , operating system , quantum mechanics
A mechanical shock or impact sensor system for teaching purposes was developed and characterized. The device consists of Mylar layers (3×3 to 21×21 cm 2 ) 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.