Magnetic Induction Tomography Spectroscopy for Structural and Functional Characterization in Metallic Materials

Imamul Muttakin, Manuchehr Soleimani

Research output: Contribution to journalArticlepeer-review

8 Citations (SciVal)


Magnetic induction tomography (MIT) is a powerful imaging system for monitoring the state of metallic materials. Tomographic methods enable automatic inspection of metallic samples making use of multi-sensor measurements and data processing of eddy current-based sensing from mutual inductances. This paper investigates a multi-frequency MIT using both amplitude and phase data. The image reconstruction algorithm is based on a novel spectrally-correlative total variation method allowing an efficient and all-in-one spectral reconstruction. Additionally, the paper shows the rate of change in spectral images with respect to the excitation frequencies. Using both spectral maps and their spectral derivative maps, one can derive key structural and functional information regarding the material under test. This includes their type, size, number, existence of voids and cracks. Spectral maps can also give functional information, such as mechanical strains and their thermal conditions and composition.
Original languageEnglish
Article number2639
Issue number11
Publication statusPublished - 9 Jun 2020

Bibliographical note

Funding Information:
Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 764902.

Publisher Copyright:
© 2020 by the authors.


  • Cole-Cole plot
  • Metal characterization
  • Spectral MIT

ASJC Scopus subject areas

  • Materials Science(all)


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