Electromechanical Fatique Testing Device for Dielectric Elastomers under Controllable Environmental Conditions

Konferenz: ACTUATOR 2018 - 16th International Conference on New Actuators
25.06.2018 - 27.06.2018 in Bremen, Deutschland

Tagungsband: ACTUATOR 2018

Seiten: 4Sprache: EnglischTyp: PDF

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Bruch, D.; Motzki, P.; Seelecke, S. (Universität des Saarlandes, Saarbrücken, Germany & Zentrum für Mechatronik und Automatisierungstechnik gGmbH, Saarbrücken, Germany)
Hill, M. (Zentrum für Mechatronik und Automatisierungstechnik gGmbH, Saarbrücken, Germany)
Hau, S. (Universität des Saarlandes, Saarbrücken, Germany)

Dielectric Elastomers (DEs) represent a promising transducer technology, due to their lightweight, high energy-efficiency, and design flexibility. Their electromechanical properties enable a large field of potential applications including actuators, sensors and generators. To establish commercial DE applications, it is of high importance to quantify the long-term performance of DE transducers under electrical and mechanical load. This paper presents a multifunctional testing device, which allows systematic investigations of the DE long-term and fatigue characteristics under controllable and application-oriented environmental conditions. It provides mechanical and electrical excitation modules in order to fatigue the DEs, as well as measurement modules in order to investigate the DE long-term characteristics. The whole fatigue module can be placed in a climate chamber, which enables adjustments in temperature and humidity. Strip-out-of-plane DE actuators are used as test specimens for the demonstration of the fatigue testing device and first measurement results are presented.