Influence of Shape Demagnetization Effect for Naval Vessel Deperming

함정의 형상 반자계 효과가 탈자에 미치는 영향

  • Received : 2015.11.05
  • Accepted : 2015.12.10
  • Published : 2016.02.29


This paper studied on the influence of naval vessel shape on vertical magnetic field after the vessel was demagnetized. The triangular shape, the rectangular shape and circular shape were adaped from vessel's structual drawings. Magneto-static FEM analysis was performed to obtain the iduced magnetic field due to earth magnetic field for those shapes. During demagnetization process, magnetic field of residual magnetization was observed. The holizontal and vertical magnetic field were calculated depending on vertical bias magnetic field through magnetc component seperation. To demagnetize naval vessel ship, demagnetizing coils shoud be wound more finely in the vow and stern of the ship than it should be in the mid-part of the ship.


demagnetization effect;naval vessel shape;vertical magnetization;othogonal magnetic field


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Supported by : Pukyong National University