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Magnetic Imaging through Metallic Enclosures

Darrer, BJ; Bartlett, PA; Watson, JC; Renzoni, F; (2015) Magnetic Imaging through Metallic Enclosures. In: Proceedings of 7th International Symposium on Process Tomography. International Symposium on Process Tomography: Dresden, Germany. Green open access

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Abstract

Security applications may require the ability to image through electromagnetic shields. This is for example the case when trafficking of illicit material involves cargo containers. Thus, suitable detection techniques are required to penetrate a ferromagnetic enclosure. We report on the demonstration of the ability of a system based on electromagnetic interrogation techniques to create magnetic images of metallic objects concealed within metallic enclosures. The penetrating power through single and double ferromagnetic enclosures was investigated. The instrument employs a driver Helmholtz-coil assembly and an array of 20 × 20 sensor coils. The sample objects were imaged via phase variation measurements between the driver and sensor coils, due to inductive coupling between the coils and the sample object.

Type: Proceedings paper
Title: Magnetic Imaging through Metallic Enclosures
Event: 7th International Symposium on Process Tomography
Location: Dresden, Germany
Dates: 01 September 2015 - 03 September 2015
Open access status: An open access version is available from UCL Discovery
Publisher version: http://www.isipt.org/ispt7/
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Magnetic induction tomography (MIT), eddy currents, imaging, security.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1539596
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