Factors influencing the mean-time-to-failure of single-layer uniaxially prestretched silicone-based DEAs

Fabio Beco Albuquerque; Herbert Shea

doi:10.1117/12.2611165

20 April 2022 Factors influencing the mean-time-to-failure of single-layer uniaxially prestretched silicone-based DEAs

Proceedings Volume 12042, Electroactive Polymer Actuators and Devices (EAPAD) XXIV; 1204206 (2022) https://doi.org/10.1117/12.2611165
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

We report the effect of electric field and of thin encapsulation layers on the lifetime of silicone-based dielectric elastomer actuators (DEAs), for different environmental conditions under DC actuation. The dielectric is Elastosil 2030/20, and the encapsulation layer is a soft silicone elastomer. We conduct our tests from 20°C to 85°C, and from 20% RH to 90% RH. increasing the electric field from 90 V/μm (3.5% actuation strain) to 110 V/μm (7% actuation strain) yields 140x lower lifetimes at 85°C – 85% RH. Encapsulating the DEAs increases DC lifetime of factors up to 30x, with negligible reduction in actuation strain.

Conference Presentation

Citation Download Citation

Fabio Beco Albuquerque and Herbert Shea "Factors influencing the mean-time-to-failure of single-layer uniaxially prestretched silicone-based DEAs", Proc. SPIE 12042, Electroactive Polymer Actuators and Devices (EAPAD) XXIV, 1204206 (20 April 2022); https://doi.org/10.1117/12.2611165

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