Uni-axial reinforced dielectric elastomer actuators with embedded 3D printed fibers

Author:

Konstantinidi StefaniaORCID,Martinez ThomasORCID,Tandon Biranche,Civet Yoan,Perriard Yves

Abstract

Abstract Dielectric elastomer actuators (DEAs) can be described as compliant capacitors formed by a dielectric elastomer film sandwiched between two electrodes. An applied voltage results in a compressive Maxwell stress, a thickness reduction and thus an expansion in the other dimensions. In order to favor large uni-axial deformations, it is predicted that DEAs ought to be constrained in the other direction. This can be achieved by reinforcing the DEA with unidirectional fibers. In this paper, the behavior of uni-axial fiber-reinforced DEAs is established and the proposed model innovates by taking into consideration the fiber properties such as their Young’s modulus and dimensions, and is characterized by transversely isotropic models. A novel fabrication process is then presented for reinforced DEAs by using 3D printed fibers with four different materials, namely Nylon, PETG, ABS and PLA, and different coverages of fibers are considered. Fiber reinforcement is shown to increase uni-axial strain up to 75% in the manufactured DEAs when compared to traditional DEAs. This behavior corresponds to the one predicted by the proposed model.

Funder

Werner Siemens-Stiftung

Publisher

IOP Publishing

Subject

Electrical and Electronic Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics,Civil and Structural Engineering,Signal Processing

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1. Investigation of buckling instabilities in fiber-reinforced DEAs;Composites Science and Technology;2024-11

2. Uniaxial carbon nanotube fiber reinforced dielectric elastomer actuator with self-sensing;Composites Communications;2024-10

3. Fiber-Reinforced Equibiaxial Dielectric Elastomer Actuator for Out-of-Plane Displacement;Materials;2024-07-25

4. Investigation of the Strain-Dependent Electrical Impedance of Fiber-Reinforced Electrodes in Dielectric Elastomer Transducers;2024 IEEE International Instrumentation and Measurement Technology Conference (I2MTC);2024-05-20

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