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http://dx.doi.org/10.9766/KIMST.2018.21.4.456

Magnetic-Shielding Effectiveness Analysis of the Trigger Assembly of Small Arms  

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)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.21, no.4, 2018 , pp. 456-463 More about this Journal
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.
Keywords
Small Arms; Magnetic Sensor; Magnetic-Shielding Effectiveness; Multilayer Metallic Shields;
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