رسالة جامعية
Design of diaphragm dielectric elastomer actuators (DEAs) and experimental characterization techniques ; Gestaltung von Membran-Dielektrischen Elastomeraktoren (DEAs) und experimentelle Charakterisierungs-Techniken
| العنوان: | Design of diaphragm dielectric elastomer actuators (DEAs) and experimental characterization techniques ; Gestaltung von Membran-Dielektrischen Elastomeraktoren (DEAs) und experimentelle Charakterisierungs-Techniken |
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| المؤلفون: | Hodgins, Micah |
| المساهمون: | Seelecke, Stefan |
| سنة النشر: | 2016 |
| المجموعة: | SciDok - Der Wissenschaftsserver der UdS (Universität des Saarlandes) |
| مصطلحات موضوعية: | ddc:620, Elastomer, Elektrostatische Aufladung, Aktor, Intelligenter Werkstoff, Membran, Folie, Charakterisierung, Mechanik, Dickenmessung, dielectric elastomer, membrane actuator, pure shear, negative rate bias spring, bias force |
| الوصف: | Dielectric elastomer (DE) transducers are a new technology offering many benefits for actuation and sensing devices. This work focuses on DE actuators (or DEAs) which have been shown to exhibit high-strain and high-speed characteristics. Diaphragm DEAs are a type of membrane DEA configured to operate out-of-plane. However, to produce reasonable stroke, membrane DEAs should be pre-stretched with a compliant mechanism. Therefore, the actuator system consists of the DEA and the necessary compliant mechanism. The first focus of this work to investigate how DEA membranes operate as a system and how they can be improved by designing compliant mechanisms which, when coupled with the DEA, give higher performance. Several compliant mechanisms are presented and experimentally compared. A bistable mechanism called a negative-rate bias spring (NBS) is shown to greatly increase the output of the DEA. The second part of this work presents two test devices and techniques for electromechanically characterizing DE membranes. One is a programmable electromagnetic motor to characterize diaphragm DEAs and test them under different loading conditions. The second device is designed to repeatably characterize planar DEs through a tensile test. The work includes a novel technique for obtaining a membrane thickness profile while stretching and/or actuating the DEA. The tester allows for a comparison of material performance parameters which aid in more informed design recommendations for future DEAs. ; Dielektrische Elastomer (DE) Wandler stellen eine neue Technologie dar, die viele Vorteile im Bereich der Aktorik sowie Sensorik bietet. Diese Arbeit fokusiert auf DE Aktoren (DEAs), welche durch hohe Dehnungen und Reaktionsgeschwindigkeiten während der Auslenkung charakterisiert werden. Eine spezielle Art der DEAs, die Diaphragma DEAs, sind aus der Ebene heraus betriebene Membrane. Um dabei einen grossen Hub erzeugen zu können, muss die Membran mit einem flexiblen Vorspannungsmechanismus ausgerüstet werden. Beide Teile bilden das ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | English |
| العلاقة: | http://nbn-resolving.org/urn:nbn:de:bsz:291-scidok-67367Test; hdl:20.500.11880/23262; http://dx.doi.org/10.22028/D291-23206Test |
| DOI: | 10.22028/D291-23206 |
| الإتاحة: | https://doi.org/10.22028/D291-23206Test http://nbn-resolving.org/urn:nbn:de:bsz:291-scidok-67367Test |
| حقوق: | openAccess ; Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt |
| رقم الانضمام: | edsbas.44500E20 |
| قاعدة البيانات: | BASE |
| DOI: | 10.22028/D291-23206 |
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