Dielectric elastomer strain sensors with enhanced measuring sensitivity

Holger Böse; Johannes Ehrlich; Thomas Gerlach; Tatjana Shinkar; Detlev Uhl

doi:10.1117/12.2613077

20 April 2022 Dielectric elastomer strain sensors with enhanced measuring sensitivity

Holger Böse, Johannes Ehrlich, Thomas Gerlach, Tatjana Shinkar, Detlev Uhl

Proceedings Volume 12042, Electroactive Polymer Actuators and Devices (EAPAD) XXIV; 120420J (2022) https://doi.org/10.1117/12.2613077
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

A modified dielectric elastomer strain sensor was developed, in order to enhance the accuracy of the measurement of extremely small strains below 1 %. The new sensor consists of two components, which are connected in series along the sensor length. The shorter component is a stretchable dielectric elastomer strain sensor strip, whereas the longer component exhibits a non-stretchable polymer film. When the whole sensor is stretched, the strain occurs only in the stretchable shorter component. Such sensors with enhanced sensitivity were manufactured and investigated with a self-constructed electro-mechanical testing machine. The results of the measurements of capacitance, electrode resistance and stretch force vs. strain were compared with those of corresponding conventional dielectric elastomer strain sensors. Furthermore, the dependence of the capacitance on the strain was calculated with finite element method (FEM) simulations for both sensor types. The sensor design, the results of the experimental characterization and the comparison with the simulation are described in the paper.

Conference Presentation

Citation Download Citation

Holger Böse, Johannes Ehrlich, Thomas Gerlach, Tatjana Shinkar, and Detlev Uhl "Dielectric elastomer strain sensors with enhanced measuring sensitivity", Proc. SPIE 12042, Electroactive Polymer Actuators and Devices (EAPAD) XXIV, 120420J (20 April 2022); https://doi.org/10.1117/12.2613077

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available