View in EDS PDF Full Text

Modeling of Thin Shielding Layer Based on Unstructured Grid Vector Finite Element Method and Analysis of its Effect on SQUID TEM Observation Signal.

Saved in:
Bibliographic Details
Title: Modeling of Thin Shielding Layer Based on Unstructured Grid Vector Finite Element Method and Analysis of its Effect on SQUID TEM Observation Signal.
Authors: Ma, Binyuan1 maby20@mails.jlu.edu.cn, Chang, Nansong1 changns24@mails.jlu.edu.cn, Ji, Yanju1,2 jiyj@jlu.edu.cn, Zhao, Xuejiao1,2 zhaoxuejiao@jlu.edu.cn, Luan, Hui1,2 luanhui@jlu.edu.cn
Source: Applied Computational Electromagnetics Society Journal. Mar2026, Vol. 41 Issue 3, p225-237. 13p.
Subjects: Electromagnetic shielding, Finite element method, Superconducting quantum interference devices, Maxwell equations, Numerical grid generation (Numerical analysis), Electromagnetic interference, Computer simulation, Maxwell, James Clerk, 1831-1879
Abstract: Superconducting Quantum Interference Devices Time-Domain Electromagnetic Method (SQUID TEM) is currently the most accurate electromagnetic detection technology used in geophysics. However, SQUID is highly susceptible to electromagnetic interference in outdoor spaces, so it needs to work continuously and stably in a Dewar bucket wrapped with a metal shielding material. Therefore, the influence of the metal shielding thin layer on the observation signal cannot be ignored. We propose a vector finite element method based on unstructured grids to spatially model the sleeve formed by the metal shielding thin layer wrapped around the SQUID and analyze the influence of the metal shielding sleeve on the SQUID TEM observation signal. Firstly, we derive the governing equations from Maxwell’s equations. Secondly, the Galerkin method is used for finite element discretization of the control equations, and unstructured mesh discretization is applied to the metal shielding sleeve and other computational areas. By solving the interpolation basis functions of tetrahedral vector elements, the local equations of each element are obtained and combined into a global large sparse matrix. Finally, the direct solution method is used to calculate the electromagnetic response at the observation points inside the metal shielding sleeve. The effectiveness and universality of the proposed method are verified through numerical simulations. Furthermore, through field experiments in the Da Hinggan Ling area, the necessity of metal shielding sleeves in field experiments and the reliability of the calculation results proposed have been demonstrated. [ABSTRACT FROM AUTHOR]
Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 194529552
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Modeling of Thin Shielding Layer Based on Unstructured Grid Vector Finite Element Method and Analysis of its Effect on SQUID TEM Observation Signal.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ma%2C+Binyuan%22">Ma, Binyuan</searchLink><relatesTo>1</relatesTo><i> maby20@mails.jlu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chang%2C+Nansong%22">Chang, Nansong</searchLink><relatesTo>1</relatesTo><i> changns24@mails.jlu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Ji%2C+Yanju%22">Ji, Yanju</searchLink><relatesTo>1,2</relatesTo><i> jiyj@jlu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Xuejiao%22">Zhao, Xuejiao</searchLink><relatesTo>1,2</relatesTo><i> zhaoxuejiao@jlu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luan%2C+Hui%22">Luan, Hui</searchLink><relatesTo>1,2</relatesTo><i> luanhui@jlu.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Applied+Computational+Electromagnetics+Society+Journal%22">Applied Computational Electromagnetics Society Journal</searchLink>. Mar2026, Vol. 41 Issue 3, p225-237. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Electromagnetic+shielding%22">Electromagnetic shielding</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Superconducting+quantum+interference+devices%22">Superconducting quantum interference devices</searchLink><br /><searchLink fieldCode="DE" term="%22Maxwell+equations%22">Maxwell equations</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+grid+generation+%28Numerical+analysis%29%22">Numerical grid generation (Numerical analysis)</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+interference%22">Electromagnetic interference</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Maxwell%2C+James+Clerk%2C+1831-1879%22">Maxwell, James Clerk, 1831-1879</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Superconducting Quantum Interference Devices Time-Domain Electromagnetic Method (SQUID TEM) is currently the most accurate electromagnetic detection technology used in geophysics. However, SQUID is highly susceptible to electromagnetic interference in outdoor spaces, so it needs to work continuously and stably in a Dewar bucket wrapped with a metal shielding material. Therefore, the influence of the metal shielding thin layer on the observation signal cannot be ignored. We propose a vector finite element method based on unstructured grids to spatially model the sleeve formed by the metal shielding thin layer wrapped around the SQUID and analyze the influence of the metal shielding sleeve on the SQUID TEM observation signal. Firstly, we derive the governing equations from Maxwell’s equations. Secondly, the Galerkin method is used for finite element discretization of the control equations, and unstructured mesh discretization is applied to the metal shielding sleeve and other computational areas. By solving the interpolation basis functions of tetrahedral vector elements, the local equations of each element are obtained and combined into a global large sparse matrix. Finally, the direct solution method is used to calculate the electromagnetic response at the observation points inside the metal shielding sleeve. The effectiveness and universality of the proposed method are verified through numerical simulations. Furthermore, through field experiments in the Da Hinggan Ling area, the necessity of metal shielding sleeves in field experiments and the reliability of the calculation results proposed have been demonstrated. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Computational Electromagnetics Society Journal is the property of River Publishers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194529552
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.13052/2026.ACES.J.410304
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 225
    Subjects:
      – SubjectFull: Electromagnetic shielding
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Superconducting quantum interference devices
        Type: general
      – SubjectFull: Maxwell equations
        Type: general
      – SubjectFull: Numerical grid generation (Numerical analysis)
        Type: general
      – SubjectFull: Electromagnetic interference
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Maxwell, James Clerk, 1831-1879
        Type: general
    Titles:
      – TitleFull: Modeling of Thin Shielding Layer Based on Unstructured Grid Vector Finite Element Method and Analysis of its Effect on SQUID TEM Observation Signal.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Ma, Binyuan
      – PersonEntity:
          Name:
            NameFull: Chang, Nansong
      – PersonEntity:
          Name:
            NameFull: Ji, Yanju
      – PersonEntity:
          Name:
            NameFull: Zhao, Xuejiao
      – PersonEntity:
          Name:
            NameFull: Luan, Hui
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 10544887
          Numbering:
            – Type: volume
              Value: 41
            – Type: issue
              Value: 3
          Titles:
            – TitleFull: Applied Computational Electromagnetics Society Journal
              Type: main
ResultId 1