Dielectric Breakdown Strength of PDMS Elastomers after Mechanical Cycling
Author:
Taine Emmanuel12ORCID, Andritsch Thomas1ORCID, Saeedi Istebreq A.1, Morshuis Peter H. F.3
Affiliation:
1. The Tony Davies High Voltage Laboratory, University of Southampton, Southampton SO17 1BJ, UK 2. R&D Laboratory, SBM Offshore, 06510 Le Broc, France 3. Solid Dielectric Solutions, 2311 SG Leiden, The Netherlands
Abstract
PDMS-based composites such as silicone elastomers are commonly found in high-voltage engineering, especially in outdoor insulation as coatings or structural elements or at interfaces between network elements, such as cable sealing ends (CSE). They are also promising prospects for dielectric elastomer generators (DEG), which are retrieving electrostatic energy from large strain amplitudes. The upper limit of energy conversion from these transducers is determined by the dielectric breakdown strength (DBS). Therefore, developing reliable systems that operate under high electric fields and variable repeated strains requires a thorough understanding of the mechanisms behind electrical breakdown and its coupling to mechanical cycling. In this study, the effect of Mullins damage and mechanical fatigue on silicone elastomers has been investigated. An electro-mechanical instability model that considers cyclic softening allows for predicting the evolution of the breakdown strength depending on the loading history. The results highlight the importance of the “first cycle,” where up to a 30% reduction in the mean DBS was measured. However, subsequent mechanical fatigue only marginally contributes to the degradation, which is a promising perspective for the long-term performance of any silicone elastomer as long as the precise impact of the first cycle is known.
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference34 articles.
1. A review of dielectric elastomer generator systems;Moretti;Adv. Intell. Syst.,2020 2. Kornbluh, R.D., Eckerle, J., and McCoy, B. (2011). A Scalable Solution to Harvest Kinetic Energy, SPIE Newsroom. 3. Jean, P., Wattez, A., Ardoise, G., Melis, C., Van Kessel, R., Fourmon, A., Barrabino, E., Heemskerk, J., and Queau, J.P. (2012, January 12–15). Standing wave tube electro active polymer wave energy converter. Proceedings of the Electroactive Polymer Actuators and Devices (EAPAD), San Diego, CA, USA. 4. Modelling and testing of a wave energy converter based on dielectric elastomer generators;Moretti;Proc. R. Soc. A,2019 5. High breakdown-strength composites from liquid silicone rubbers;Vudayagiri;Smart Mater. Struct.,2014
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|