Experimental analysis of alternative dielectric materials for DBD plasma actuators

RODRIGUES, F. F., PASCOA, J. C. and TRANCOSSI, Michele (2018). Experimental analysis of alternative dielectric materials for DBD plasma actuators. In: Proceedings of the ASME 2018 international mechanical engineering congress and exposition. ASME.

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Official URL: http://proceedings.asmedigitalcollection.asme.org/...
Link to published version:: https://doi.org/10.1115/imece2018-87455


Dielectric Barrier Discharge plasma actuators are simple devices with great potential for active flow control applications. They have very interesting features which have made them a topic of interest for many researchers, for instance they present very low mass, fast response time, low cost, easy implementation and they are fully electronic with no moving parts. The dielectric material used in the construction of these devices present an important role in their performance. The variety of dielectrics studied in the literature is very restrict and the majority of the authors make use of Kapton, Teflon, Macor ceramic or PMMA. Furthermore, several authors reported difficulties in the durability of the dielectric layer when actuators operate at high levels of voltage and frequency. Considering this background, the present study focus on the experimental testing of alternative dielectric materials which can be used for DBD plasma actuators fabrication. Considering this, plasma actuators with dielectric layers made of Poly-Isobutylene rubber, Poly-Lactic acid and Acetoxy Silicon were experimentally tested. Although these dielectric materials are not commonly used in plasma actuators, their values of dielectric strength and dielectric permittivity indicate they can be good solutions. The plasma actuators facbricated with these alternative dielectric materials were experimentally analysed in terms of electrical characteristics and induced flow velocity, and the obtained results were compared with an actuator made of Kapton which is, currently, the most common dielectric material for plasma actuators. The effectiveness of the actuators was estimated and the advantages and disadvantages of the use of each dielectric material were discussed.

Item Type: Book Section
Additional Information: ** From Crossref via Jisc Publications Router **History: published 09-11-2018 ASME 2018 International Mechanical Engineering Congress and Exposition,9-15 November 2018,Pittsburgh,USA
Identification Number: https://doi.org/10.1115/imece2018-87455
SWORD Depositor: Margaret Boot
Depositing User: Margaret Boot
Date Deposited: 06 Feb 2019 10:12
Last Modified: 18 Mar 2021 06:37
URI: https://shura.shu.ac.uk/id/eprint/23859

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