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Title: On the failure modes and maximum stretch of circular dielectric elastomer actuators
Authors: Li, Z.
Tian, A.
Zhang, D.
Wang, Y. 
Lau, H.Y.K.
Keywords: Analytical model
Dielectric elastomer actuators
Electrical breakdown
Electromechanical instability
Issue Date: 2020
Publisher: IOP Publishing Ltd
Citation: Li, Z., Tian, A., Zhang, D., Wang, Y., Lau, H.Y.K. (2020). On the failure modes and maximum stretch of circular dielectric elastomer actuators. Materials Research Express 7 (10) : 105701. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Dielectric elastomer actuators have been widely studied theoretically and experimentally thanks to its superior attributes such as large deformation. The actuator failure has long been an issue placing barriers to large deformation in practical applications. In this paper, we investigate the various failure modes and the maximum stretch of the circular dielectric elastomer actuator. An analytical model depicting the actuation mechanism of the dielectric elastomer actuator is proposed to help analyze the failure onset. Several types of normally observed failure modes, i.e. electromechanical instability, loss of tension, and electrical breakdown, are analyzed theoretically based on the proposed model. A 3D figure that interprets the relationship of the corresponding factors and the possible failure modes are proposed as well, by which we could know the possible failure onset, as well as the associated maximum stretch under specific conditions. Experiments are carried out and the results are in accordance with the prediction by the proposed 3D figure. © 2020 The Author(s). Published by IOP Publishing Ltd
Source Title: Materials Research Express
ISSN: 20531591
DOI: 10.1088/2053-1591/abbe42
Rights: Attribution 4.0 International
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