IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i14p3725-d386912.html
   My bibliography  Save this article

Subsurface Stress Measurement in GIS Epoxy Composite by Using LCR Waves

Author

Listed:
  • Zhouyiao Zou

    (School of Electric Power, South China University of Technology, Guangzhou 510640, China)

  • Yanpeng Hao

    (School of Electric Power, South China University of Technology, Guangzhou 510640, China)

  • Yao Zheng

    (School of Electric Power, South China University of Technology, Guangzhou 510640, China)

  • Weiming He

    (School of Electric Power, South China University of Technology, Guangzhou 510640, China)

  • Fangyuan Tian

    (School of Electric Power, South China University of Technology, Guangzhou 510640, China)

  • Lin Yang

    (School of Electric Power, South China University of Technology, Guangzhou 510640, China)

  • Licheng Li

    (School of Electric Power, South China University of Technology, Guangzhou 510640, China)

Abstract

Internal stress in basin insulators of gas-insulated metal-enclosed switchgear (GIS) can lead to cracks, which affects the safe operation of these apparatuses. In this research, we proposed a subsurface internal stress measurement method for GIS epoxy composites. This method is based on an ultrasonic longitudinal critically refracted (LCR) wave technique. In this study, some epoxy composite specimens were synthesized with similar materials and manufacturing processes to those of 252 kV GIS basin insulators. An ultrasonic stress measurement system that utilized the LCR wave technique was set-up to investigate the relationship between stress and LCR wave propagation time, as well as to measure the compressive stress of the epoxy specimen within 0–50 MPa. The results show that LCR wave propagation time linearly decreased when stress increased in the subsurface zone and the acoustoelastic coefficient was −4.95. We found the relative errors of stress measurements to be less than 13%.

Suggested Citation

  • Zhouyiao Zou & Yanpeng Hao & Yao Zheng & Weiming He & Fangyuan Tian & Lin Yang & Licheng Li, 2020. "Subsurface Stress Measurement in GIS Epoxy Composite by Using LCR Waves," Energies, MDPI, vol. 13(14), pages 1-11, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3725-:d:386912
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/14/3725/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/14/3725/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Zhouyiao Zou & Yanpeng Hao & Fangyuan Tian & Yao Zheng & Weiming He & Lin Yang & Licheng Li, 2020. "An Ultrasonic Longitudinal Through-Transmission Method to Measure the Compressive Internal Stress in Epoxy Composite Specimens of Gas-Insulated Metal-Enclosed Switchgear," Energies, MDPI, vol. 13(5), pages 1-21, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      Corrections

      All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3725-:d:386912. See general information about how to correct material in RePEc.

      If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

      If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

      For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

      Please note that corrections may take a couple of weeks to filter through the various RePEc services.

      IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.