Rotational magnetic induction tomography

Trakic, Adnan, Eskandarnia, Neda, Li, Bing Keong, Weber, Ewald, Wang, Hua and Crozier, Stuart (2012) Rotational magnetic induction tomography. Measurement Science and Technology, 23 2: 025402.1-025402.12. doi:10.1088/0957-0233/23/2/025402

Author Trakic, Adnan
Eskandarnia, Neda
Li, Bing Keong
Weber, Ewald
Wang, Hua
Crozier, Stuart
Title Rotational magnetic induction tomography
Journal name Measurement Science and Technology   Check publisher's open access policy
ISSN 0957-0233
Publication date 2012-02-01
Sub-type Article (original research)
DOI 10.1088/0957-0233/23/2/025402
Volume 23
Issue 2
Start page 025402.1
End page 025402.12
Total pages 12
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Language eng
Abstract In magnetic induction tomography (MIT), an array of excitation coils is typically used to apply time-varying magnetic fields to induce eddy currents in the material to be studied. The magnetic fields from the eddy currents are then detected by an array of sensing coils to form an image of passive electromagnetic properties (i.e. conductivity, permittivity and permeability). Increasing the number of transmitters and receivers can provide a better image quality at the expense of a larger and more expensive MIT system. Instead of increasing the number of coils, this study investigates the possibility of rotating a single transmit–receive coil to image the electrical properties of the sample, by emulating an array of 200 transmit–receive coils by time-division multiplexing. Engineering details on the electromechanical design and development of a rotating MIT system are presented. The experimental results indicate that representative images of conductive samples can be obtained at 5 MHz by rotating a single transmit–receive coil.
Keyword Magnetic induction tomography (MIT)
Rotating MIT
Eddy currents
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # 025402

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Information Technology and Electrical Engineering Publications
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