Mr. Junya Ohno Profile

Junya Ohno

at Toyohashi Univ of Technology

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Proceedings Article | 9 May 2024 Poster + Paper

Dielectric elastomer actuator with electro adhesion for a vibration excitation of a conductive structure

Toshiki Hiruta, Junya Ohno, Kentaro Takagi

Proceedings Volume 12945, 129450W (2024) https://doi.org/10.1117/12.3010542

KEYWORDS: Dielectric elastomer actuators, Vibration, Adhesion, Electrodes, Pipes, Adhesives, Aluminum, Laser Doppler velocimetry

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This study proposes a vibration excitation technique using a dielectric elastomer actuator (DEA) that can attach to a conductive structure based on an electro adhesion technique. Vibration responses of mechanical structures are experimentally analyzed to assess their mechanical characteristics. Conventionally, impulse hammers, heavy and rigid exciters, and lead zirconate titanate (PZT) actuators are applied to excite the vibration of the structure in a vibration experiment. However, the other vibration excitation technique should be applied for flexible structures with curved surface to evaluate their vibration response accurately without damages on them. Herein, a DEA can be applied to the vibration excitation taking advantage of its features of high flexibility, stretchability, and fast response. Conventional DEAs are attached to the target structures with adhesives degrading DEAs’ reusability. In this study, the electro adhesion technique, which can generate an attraction force were applied to the DEA. The proposed DEA can attach to the target without adhesives. The proposed DEA was fabricated by stacking layers that can generate the excitation force and that can generate the attraction force of the electro adhesion. Then, a vibration experiment for an aluminum pipe structure was conducted applying the DEA excitation. Finally, the effectiveness of the proposed vibration excitation technique was evaluated based on vibration responses of the target structure.

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