Novel optimization method for mobile magnetostatic shield and test applications

This article provides an optimized solution to the problem of passive shielding against static magnetic fields with any number of spherical shells. It is known, that the shielding factor of a layered structure increases in contrast to a single shell with the same overall thickness. For the reduction...

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Main Authors: Patrick Alexander Ralf, Christian Kreischer
Format: Article
Language:English
Published: Polish Academy of Sciences 2022-08-01
Series:Archives of Electrical Engineering
Subjects:
Online Access:https://journals.pan.pl/Content/124098/PDF/art06_i.pdf
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author Patrick Alexander Ralf
Christian Kreischer
author_facet Patrick Alexander Ralf
Christian Kreischer
author_sort Patrick Alexander Ralf
collection DOAJ
description This article provides an optimized solution to the problem of passive shielding against static magnetic fields with any number of spherical shells. It is known, that the shielding factor of a layered structure increases in contrast to a single shell with the same overall thickness. For the reduction of weight and cost by given material parameters and available space the best system for the layer positions has to be found. Because classic magnetically shielded rooms are very heavy, this system will be used to develop a transportable Zero-Gauss-Chamber. To handle this problem, a new way was developed, in which for the first time the solution with regard to shielding and weight was optimized. Therefore, a solution for the most general case of spherical shells was chosen with an adapted boundary condition. This solution was expanded to an arbitrary number of layers and permeabilities. With this analytic solution a differential evolution algorithm is able to find the best partition of the shells. These optimized solutions are verified by numerical solutions made by the Finite Element Method (FEM). After that the solutions of different raw data are determined and investigated.
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spelling doaj.art-44ecf778aaf1463185501eb63d9946482022-12-22T03:08:27ZengPolish Academy of SciencesArchives of Electrical Engineering2300-25062022-08-01vol. 71No 3627639https://doi.org/10.24425/aee.2022.141675Novel optimization method for mobile magnetostatic shield and test applicationsPatrick Alexander Ralf0https://orcid.org/0000-0002-4921-0581Christian Kreischer1Helmut Schmidt University, University of the Federal Armed Forced Hamburg, GermanyHelmut Schmidt University, University of the Federal Armed Forced Hamburg, GermanyThis article provides an optimized solution to the problem of passive shielding against static magnetic fields with any number of spherical shells. It is known, that the shielding factor of a layered structure increases in contrast to a single shell with the same overall thickness. For the reduction of weight and cost by given material parameters and available space the best system for the layer positions has to be found. Because classic magnetically shielded rooms are very heavy, this system will be used to develop a transportable Zero-Gauss-Chamber. To handle this problem, a new way was developed, in which for the first time the solution with regard to shielding and weight was optimized. Therefore, a solution for the most general case of spherical shells was chosen with an adapted boundary condition. This solution was expanded to an arbitrary number of layers and permeabilities. With this analytic solution a differential evolution algorithm is able to find the best partition of the shells. These optimized solutions are verified by numerical solutions made by the Finite Element Method (FEM). After that the solutions of different raw data are determined and investigated.https://journals.pan.pl/Content/124098/PDF/art06_i.pdfdifferential evolutionevolutionary algorithmmagnetostatic passive shieldingmobile applicationoptimizationspherical shells
spellingShingle Patrick Alexander Ralf
Christian Kreischer
Novel optimization method for mobile magnetostatic shield and test applications
Archives of Electrical Engineering
differential evolution
evolutionary algorithm
magnetostatic passive shielding
mobile application
optimization
spherical shells
title Novel optimization method for mobile magnetostatic shield and test applications
title_full Novel optimization method for mobile magnetostatic shield and test applications
title_fullStr Novel optimization method for mobile magnetostatic shield and test applications
title_full_unstemmed Novel optimization method for mobile magnetostatic shield and test applications
title_short Novel optimization method for mobile magnetostatic shield and test applications
title_sort novel optimization method for mobile magnetostatic shield and test applications
topic differential evolution
evolutionary algorithm
magnetostatic passive shielding
mobile application
optimization
spherical shells
url https://journals.pan.pl/Content/124098/PDF/art06_i.pdf
work_keys_str_mv AT patrickalexanderralf noveloptimizationmethodformobilemagnetostaticshieldandtestapplications
AT christiankreischer noveloptimizationmethodformobilemagnetostaticshieldandtestapplications