Gatti, Davide ; Haus, Henry ; Matysek, Marc ; Frohnapfel, Bettina ; Tropea, Cameron ; Schlaak, Helmut F. (2014)
The dielectric breakdown limit of silicone dielectric elastomer actuators.
In: Applied Physics Letters, 104 (5)
Article
Abstract
Soft silicone elastomers are used in a generation of dielectric elastomer actuators (DEAs) with improved actuation speed and durability compared to the commonly used, highly viscoelastic polyacrylate 3M VHB films. The maximum voltage-induced stretch of DEAs is ultimately limited by their dielectric breakdown field strength. We measure the dependence of dielectric breakdown field strength on thickness and stretch for a silicone elastomer, when voltage-induced deformation is prevented. The experimental results are combined with an analytic model of equi-biaxial actuation to show that accounting for variable dielectric field strength results in different values of optimal pre-stretch and thickness that maximize the DEA actuation.
| Item Type: | Article |
|---|---|
| Erschienen: | 2014 |
| Creators: | Gatti, Davide ; Haus, Henry ; Matysek, Marc ; Frohnapfel, Bettina ; Tropea, Cameron ; Schlaak, Helmut F. |
| Type of entry: | Bibliographie |
| Title: | The dielectric breakdown limit of silicone dielectric elastomer actuators |
| Language: | German |
| Date: | 3 February 2014 |
| Publisher: | AIP Publishing LLC |
| Journal or Publication Title: | Applied Physics Letters |
| Volume of the journal: | 104 |
| Issue Number: | 5 |
| URL / URN: | http://dx.doi.org/10.1063/1.4863816 |
| Abstract: | Soft silicone elastomers are used in a generation of dielectric elastomer actuators (DEAs) with improved actuation speed and durability compared to the commonly used, highly viscoelastic polyacrylate 3M VHB films. The maximum voltage-induced stretch of DEAs is ultimately limited by their dielectric breakdown field strength. We measure the dependence of dielectric breakdown field strength on thickness and stretch for a silicone elastomer, when voltage-induced deformation is prevented. The experimental results are combined with an analytic model of equi-biaxial actuation to show that accounting for variable dielectric field strength results in different values of optimal pre-stretch and thickness that maximize the DEA actuation. |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Fluid Mechanics and Aerodynamics (SLA) 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Electromechanical Design (dissolved 18.12.2018) Exzellenzinitiative Exzellenzinitiative > Clusters of Excellence Zentrale Einrichtungen Exzellenzinitiative > Clusters of Excellence > Center of Smart Interfaces (CSI) |
| Date Deposited: | 27 Jul 2015 11:52 |
| Last Modified: | 04 Mar 2019 09:53 |
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