A New Simple Method to Design Degaussing Coils Using Magnetic Dipoles

Since submarines are mostly made of ferromagnetic materials, anti-submarine warfare aircraft detect submarines using all kinds of magnetometers. In order to make the submarine magnetically silent, it is usually equipped with degaussing coils to neutralize the magnetic anomaly. However, with the increased size of the submarine, more coils are needed by conventional degaussing methods, and the degaussing system becomes complex to design and implement. To simplify the design of submarine degaussing coils and improve their degaussing accuracies, this paper presents a novel and efficient method of the degaussing coil design, which is based on the simplest equivalent model of multiple magnetic dipoles. First, the influence of the magnetic moment and spatial distribution of multi-magnetic dipoles on the equivalent effects with different spatial scales were studied. Then the simplest model of multiple magnetic dipoles was proved to capably model complex ferromagnets. We simulated the degaussing coils of a submarine by COMSOL Multiphysics software to verify the validity of the simplest modeling method and the design of the coils. The simulation results show that the magnetic anomaly induced by the submarine was reduced by at least 99% at different ranges.

[1]  Hoyoung Lee,et al.  Effects of Electro-Magnetic Properties of Obstacles in Magnetic Resonant Wireless Power Transfer , 2021, Energies.

[2]  Jianming Fan,et al.  Summary of ship comprehensive degaussing , 2021 .

[3]  F. Kazi,et al.  Magnetic-Signature Prediction for Efficient Degaussing of Naval Vessels , 2020, IEEE Transactions on Magnetics.

[4]  R. Grechishkin,et al.  Colloid-SEM method for the investigation of magnetic domain structures. , 2020, Micron.

[5]  A. Pyatakov,et al.  Mechanisms of the Electric Field-Induced Displacement and Transformation of Magnetic Domain Boundaries , 2020 .

[6]  Tonglei Wang,et al.  Magnetic Anomaly Detection and Localization Using Orthogonal Basis of Magnetic Tensor Contraction , 2020, IEEE Transactions on Geoscience and Remote Sensing.

[7]  Faruk Kazi,et al.  Electromagnetic Signature Reduction of Ferromagnetic Vessels Using Machine Learning Approach , 2019, IEEE Transactions on Magnetics.

[8]  Liming Fan,et al.  Baseline optimization for scalar magnetometer array and its application in magnetic target localization , 2018, Chinese Physics B.

[9]  F. Renzoni,et al.  Active underwater detection with an array of atomic magnetometers. , 2018, Applied optics.

[10]  H. Lee,et al.  Efficient Search Method of Deperming Protocol for Magnetic Silence of Vessel , 2017 .

[11]  Juniarko Prananda,et al.  Study Of Calculation Of Degaussing System For Reducing Magnetic Field From Submersible Vehicle , 2017 .

[12]  Z. Zhang,et al.  Forward modeling of geophysical electromagnetic methods using Comsol , 2016, Comput. Geosci..

[13]  R. A. Raveendra Varma,et al.  Design of Degaussing System and Demonstration of Signature Reduction on Ship Model through Laboratory Experiments , 2014 .

[14]  Hyunsoo Yang,et al.  Detection of domain wall eigenfrequency in infinity-shaped magnetic nanostructures , 2012, 1208.3527.

[15]  M. Shoukry,et al.  Tension-Bearing Couples (TBC), Part I*: FEM Validation of Proposed Analysis Approach, Approach Enhancement, Results Comparisons and Evaluation , 2011 .

[16]  Chen Wen-tao,et al.  Submarine math model of magnetic moment separation research based on magnet simulation method , 2011 .

[17]  Shan Zhi-chao,et al.  Analysis and comparison on magnetic field modeling method of submarine , 2011 .

[18]  Sam Poteete,et al.  Navy's N-Layer Magnetic Model with application to naval magnetic demining , 2010 .

[19]  Raimondo Schettini,et al.  Underwater Image Processing: State of the Art of Restoration and Image Enhancement Methods , 2010, EURASIP J. Adv. Signal Process..

[20]  Hongda Liu,et al.  Optimization of Vessel Degaussing System Based on Poly-population Particle Swarm Algorithm , 2007, 2007 International Conference on Mechatronics and Automation.

[21]  S. Suh,et al.  The change of the magnetic domain and the magnetism property in rare-earth-substituted garnet single-crystal films , 2006 .

[22]  John J. Holmes,et al.  Exploitation of A Ship's Magnetic Field Signatures , 2006, Exploitation of A Ship's Magnetic Field Signatures.

[23]  Sailing He,et al.  Exact and explicit solution to a class of degaussing problems , 2000 .

[24]  B. Kaplan,et al.  Spherical and spheroidal shells as models in magnetic detection , 1999 .

[25]  G. Meunier,et al.  Finite element modeling of unbounded problems: use of a geometrical transformation and comparison with the boundary integral method , 1996 .

[26]  Gérard Meunier,et al.  Ship magnetizations modelling by the finite element method , 1992 .

[27]  P. Tarr.  An apparatus for and a method of measuring magnetic effects due to eddy currents , 1985 .

[28]  M. Fuller,et al.  The dependence of magnetic domain structure upon magnetization state with emphasis upon nucleation as a mechanism for pseudo‐single‐domain behavior , 1983 .

[29]  Bruce M. Irons,et al.  Quadrature rules for brick based finite elements , 1971 .