Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Magnetic-Shielding Effectiveness Analysis of the Trigger Assembly of Small Arms

소구경 개인화기 격발신호 발생장치의 자기차폐효과 분석

  • Lee, Kisu (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Ahn, Joon Mo (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Chae, Je-Wook (The 5th Research and Development Institute, Agency for Defense Development)
  • 이기수 (국방과학연구소 제4기술연구본부) ;
  • 안준모 (국방과학연구소 제4기술연구본부) ;
  • 채제욱 (국방과학연구소 제5기술연구본부)
  • Received : 2018.02.08
  • Accepted : 2018.07.06
  • Published : 2018.08.05
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Abstract

With the development of weapon systems by mounting various sensors, it makes important to analyze the precise functioning of sensor to external environment. In the case of small arms with magnetic sensor, the malfunction of small arms might be caused by strong external magnetic fields. In this study, the effects of magnetic sensor on external magnetic fields were analyzed, and optimal magnetic shield and shield structure were designed through M&S. In addition, the magnetic-shielding effectiveness of magnetic sensor in small arms was verified with commercial shielding materials. As a result, it was demonstrated that the Fe-Cu-Si-Nd-B with the structure of multi-layer metallic shields was shown the magnetic-shielding effectiveness of 83 % for an external permanent magnet and 19 % for an alternating magnetic field of 180 dBpT at 60 Hz, respectively.

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References

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