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A Test Method for Shielding Effectiveness of Materials against Electromagnetic Pulse Based on Coaxial Flange

Author

Listed:
  • Yifei Liu

    (National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China)

  • Wei Wu

    (National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China)

  • Xiang Chen

    (State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang 471003, China)

  • Xin Nie

    (National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China)

  • Mo Zhao

    (National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China)

  • Rui Jia

    (State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang 471003, China)

  • Jinxi Li

    (National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China)

Abstract

Aiming at the evaluation of the shielding effectiveness (SE) of materials against high-intensity electromagnetic pulse (EMP), the shielding mechanism in the frequency domain is investigated, and the factors that determine SE such as conductivity, thickness of material, and test frequency are analyzed. The attenuated waves of solid and perforated plate materials irradiated by EMP are simulated in CST. The results show that the two materials exhibit low-pass and high-pass filtering characteristics, respectively, which lead to a big difference in the transmitted waves (rise time and pulse width). Based on this, a time domain SE test method using coaxial flange is proposed which can obtain the incident and the transmitted and reflected waves, and the time domain SE of graphenes with different thicknesses (80, 100, 200, and 300 μm) are measured. The characteristics of the reflected and transmitted waves are analyzed in detail, and the change regulations comply with the theoretical shielding model well. The peak value SE and energy density SE, respectively, are calculated. Furthermore, the frequency domain SE can be obtained through the Fourier transform, so the method has a wide application in material SE performance evaluation against high-intensity EMP.

Suggested Citation

  • Yifei Liu & Wei Wu & Xiang Chen & Xin Nie & Mo Zhao & Rui Jia & Jinxi Li, 2023. "A Test Method for Shielding Effectiveness of Materials against Electromagnetic Pulse Based on Coaxial Flange," Energies, MDPI, vol. 16(18), pages 1-12, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:18:p:6701-:d:1242932
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    References listed on IDEAS

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    1. Jinjin Wang & Zhitong Cui & Zhiqiang Chen & Yayun Dong & Xin Nie, 2022. "Machine Learning Based Prediction for the Response of Gas Discharge Tube to Damped Sinusoid Signal," Energies, MDPI, vol. 15(7), pages 1-9, April.
    2. Chuanbao Du & Zhitong Cui & Congguang Mao & Jin Tian & Wei Wu & Wei Chen & Yang Qiu, 2022. "Risk Analysis of HPEM Threats for Linear RF Channel with Pyramid Horn Antenna Based on System-Level SPICE Modeling," Energies, MDPI, vol. 15(17), pages 1-16, August.
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