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Dielectric material degradation monitoring of dielectric barrier discharge plasma actuators

机译：介质阻挡放电等离子体致动器的介电材料降解监测

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摘要

It is a known phenomenon that some dielectric materials used to construct plasma actuators degrade during operation. However, the rate at which this process occurs, to what extent, as well as a method to monitor is yet to be established. In this experimental study, it is shown that electrical measurements can be used to monitor changes in the material of the plasma actuators. The procedure we introduce for monitoring the actuators follows from the work of Kriegseis, Grundmann, and Tropea [Kriegseis et al., J. Appl. Phys. 110, 013305 (2011)], who used Lissajous figures to measure actuator power consumption and capacitance. In the present study, we quantify changes in both the power consumption and capacitance of the actuators over long operating durations. It is shown that the increase in the effective capacitance of the actuator is related to degradation (thinning) of the dielectric layer, which is accompanied by an increase in actuator power consumption. For actuators constructed from layers of Kapton~® polyimide tape, these changes are self-limiting. Although the polyimide film degrades relatively quickly, the underlying adhesive layer appears to remain intact. Over time, the effective capacitance was found to increase by up to 36%, 25%, and 11% for actuators constructed with 2, 3, and 4 layers of Kapton tape, respectively. A method is presented to prevent erosion of the Kapton dielectric layer using a coating of Polydimethylsiloxane oil. It is shown the application of this treatment can delay the onset of degradation of the Kapton dielectric material.
机译：已知的现象是，用于构造等离子体致动器的一些介电材料在操作期间会降解。但是，该过程的发生率，程度以及监视方法尚未确定。在该实验研究中，表明可以使用电学测量来监测等离子体致动器材料的变化。我们介绍的用于监视执行器的过程遵循Kriegseis，Grundmann和Tropea的工作[Kriegseis等，J。Appl。物理110，013305（2011）]，他使用Lissajous的数字来测量执行器的功耗和电容。在本研究中，我们量化了执行器在长时间运行期间的功耗和电容的变化。示出了致动器的有效电容的增加与电介质层的劣化（变薄）有关，其伴随着致动器功耗的增加。对于由Kapton〜®聚酰亚胺胶带层构成的执行器，这些变化是自限性的。尽管聚酰亚胺膜降解相对较快，但下面的粘合剂层似乎保持完整。随着时间的推移，发现使用2层，3层和4层Kapton胶带构造的执行器的有效电容分别提高了36％，25％和11％。提出了一种使用聚二甲基硅氧烷油涂层防止Kapton电介质层腐蚀的方法。已经表明，这种处理的应用可以延迟Kapton电介质材料降解的开始。

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  • 来源
    《Journal of Applied Physics》 |2014年第4期|043301.1-043301.9|共9页
  • 作者

    Ronald E. Hanson; Nicole M. Houser; Philippe Lavoie;

  • 作者单位

    Institute for Aerospace Studies, University of Toronto, Toronto, Ontario M3H 5T6, Canada,School of Engineering Sciences, University of Southampton, United Kingdom;

    Institute for Aerospace Studies, University of Toronto, Toronto, Ontario M3H 5T6, Canada;

    Institute for Aerospace Studies, University of Toronto, Toronto, Ontario M3H 5T6, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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