Home // ALLSENSORS 2023, The Eighth International Conference on Advances in Sensors, Actuators, Metering and Sensing // View article

New Design for a Thermo-formed Piezoelectret-based Accelerometer

Authors:
Igor Nazareno Soares
Ruy Alberto Corrêa Altafim
Ruy Alberto Pisani Altafim
João Paulo Pereira do Carmo
Cesar Domingues
Rogério Andrade Flauzino

Keywords: accelerometer, piezoelectret

Abstract:
The article discusses the development and analysis of a new design for piezoelectric accelerometers that are used to measure acceleration in various applications. The new design uses piezoelectret materials, which offer advantages over traditional piezoelectric ones, including improved resistance to humidity, greater stability in extreme temperatures, and increased flexibility in meeting design requirements. The piezoelectret used in this study is a thermo-formed piezoelectret based on open-tubular channel structures. The paper explains the manufacturing process of the piezoelectret, which involves thermal lamination of two fluoroethylene propylene (FEP) foils and a polytetrafluoroethylene (PTFE) template, resulting in four open-tubular channels separated by a distance of 1.4 mm. The polymer structure is coated with aluminum through evaporation to create electrodes. The piezoelectret sample is then used to create a new design of accelerometers with a single detection axis, consisting of a cylindrical lead seismic mass enclosed in a PTFE sheath placed over the piezoelectret. An elastic component made of polyurethane foam provides mechanical support and restitution. The authors conclude that this new design of piezoelectric accelerometers using piezoelectret materials has the potential to offer superior performance in various applications.

Pages: 21 to 24

Copyright: Copyright (c) IARIA, 2023

Publication date: April 24, 2023

Published in: conference

ISSN: 2519-836X

ISBN: 978-1-68558-083-4

Location: Venice, Italy

Dates: from April 24, 2023 to April 28, 2023