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Proceedings Paper

Very high breakdown field strength for dielectric elastomer actuators quenched in dielectric liquid bath
Author(s): Thanh-Giang La; Gih-Keong Lau
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Paper Abstract

Dielectric elastomer actuators (DEAs) are prone to failure by pull-in instability. However, this work showed that DEAs, which were immersed in a silicone oil bath (Dow Corning Fluid 200 50cSt), can survive the pull-instability and operates beyond the pull-in voltage. Membrane DEAs (VHB 4905), which were pre-stretched bi-axially at 200% strain and immersed in the oil bath, survived a very high eld strength (>800 MV/m) and demonstrated areal strains up to 140%. The dielectric strength, achieved in the immersion, is approximately two times larger than that in the air (450 MV/m). This is achieved because the dielectric liquid bath helps to quench the localized electrical breakdown, which would have discharged sparks and burnt the dielectric lm in the air.

Paper Details

Date Published: 9 April 2013
PDF: 9 pages
Proc. SPIE 8687, Electroactive Polymer Actuators and Devices (EAPAD) 2013, 86871R (9 April 2013); doi: 10.1117/12.2009989
Show Author Affiliations
Thanh-Giang La, Nanyang Technological Univ. (Singapore)
Gih-Keong Lau, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 8687:
Electroactive Polymer Actuators and Devices (EAPAD) 2013
Yoseph Bar-Cohen, Editor(s)

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