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Titel: A Multi‐Mode, Multi‐Frequency Dielectric Elastomer Actuator
VerfasserIn: Gratz‐Kelly, Sebastian
Rizzello, Gianluca
Fontana, Marco
Seelecke, Stefan
Moretti, Giacomo
Sprache: Englisch
Titel: Advanced Functional Materials
Bandnummer: 32
Heft: 34
Verlag/Plattform: Wiley
Erscheinungsjahr: 2022
Freie Schlagwörter: acoustics
actuators
dielectric elastomers
multi-function machines
tactile devices
vibrations
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: This paper presents a principle to develop multi-function dielectric elastomer actuators (DEAs) that can concurrently accomplish linear actuation and sound generation through a single electrical input. A centimeter-scale cone-shaped DEA is fabricated using silicone-based dielectric and electrodes. Measurements of the vibro-acoustic response reveal that the pumping deformation of the DEA contributes to a negligible extent in the sound generation, which is hence ascribable to higher order structural modes whose frequency pass-band is highly uncoupled from that of the pumping mode. Exciting the DEA with a multi-chromatic input voltage allows achieving strokes close to 1 mm or blocking forces over 0.5 N, while simultaneously generating sound pressure levels over 60 dB, regardless of possible forces and/or mechanical constraints on the DEA pumping motion. The ability of the DEA to concurrently generate linear actuation and sound is demonstrated via proof-of-concept tests: the DEA can reproduce music, while at the same time generating a deformation pulse or lifting a load comparable with its own blocking force. Furthermore, measuring the current generated by the DEA allows detecting deformations impressed by the exterior and use the DEA as an active audio-tactile interface, which produces a combined vibro-acoustic stimulus in response to a user's touch.
DOI der Erstveröffentlichung: 10.1002/adfm.202201889
URL der Erstveröffentlichung: https://onlinelibrary.wiley.com/doi/10.1002/adfm.202201889
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-376545
hdl:20.500.11880/34069
http://dx.doi.org/10.22028/D291-37654
ISSN: 1616-3028
1616-301X
Datum des Eintrags: 18-Okt-2022
Bezeichnung des in Beziehung stehenden Objekts: Supporting Information
In Beziehung stehendes Objekt: https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fadfm.202201889&file=adfm202201889-sup-0001-SuppMat.pdf
https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fadfm.202201889&file=adfm202201889-sup-0002-VideoS1.m4v
https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fadfm.202201889&file=adfm202201889-sup-0003-VideoS2.m4v
https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fadfm.202201889&file=adfm202201889-sup-0004-VideoS3.m4v
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Systems Engineering
Professur: NT - Prof. Dr. Stefan Seelecke
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes



Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons Creative Commons