Northampton Electronic Collection of Theses and Research

Inductive and magnetic field inspection systems for rebar visualization and corrosion estimation in reinforced and pre-stressed concrete

Gaydecki, P., Fernandes, B., Quek, S., Benitez, D., Miller, G. and Zaid, M. (2007) Inductive and magnetic field inspection systems for rebar visualization and corrosion estimation in reinforced and pre-stressed concrete. Non Destructive Testing Evaluation. 22(4), pp. 255-298. 1058-9759.

Item Type: Article
Abstract: Inductive and magnetic field inspection systems are becoming increasing popular for the nondestructive imaging and condition assessment of reinforcing components, such as steel reinforcing bars (rebars) and tendons in reinforced and prestressed concrete structures. In this article, we review the principles of this nascent technology, the research and commercial instruments that are now available, and the directions of future research. Magnetic field imaging technology has in general many potential benefits; it is truly nondestructive and non-invasive, it is non-hazardous, cost-effective and, most important, ignores the concrete matrix in which the reinforcing components are embedded. Most significantly, by analysing the impedance change in an excitation coil, it is also possible to obtain quantitative information (and image data) in relation to regions of corrosion. However, the testing industry has traditionally been reluctant to apply this methodology, for the important reason that the detection range is limited by the rapid attenuation of the magnetic field with increasing distance from the source. This limitation is now being addressed with research into novel coil arrangements, new, more stable and sensitive solid state sensors, and reconstruction algorithms that allow virtual three dimensional reconstruction of embedded components
Uncontrolled Keywords: Inductive scan; Magnetic field; Nondestructive; Visualization
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction. Mechanics of materials
T Technology > TA Engineering (General). Civil engineering (General) > TA417.2 Nondestructive testing
Creators: Gaydecki, Patrick, Fernandes, Bosco, Quek, Sung, Benitez, D, Miller, Graham and Zaid, Muhammad
Publisher: Taylor and Francis
Faculties, Divisions and Institutes: University Faculties, Divisions and Research Centres - OLD > School of Applied Sciences (to 2009) > Engineering (to 2009)
Faculties > Faculty of Arts, Science & Technology > Engineering
Date: May 2007
Date Type: Publication
Page Range: pp. 255-298
Journal or Publication Title: Non Destructive Testing Evaluation
Volume: 22
Number: 4
Language: English
DOI: https://doi.org/10.1080/10589750701362616
ISSN: 1058-9759
Status: Published / Disseminated
Refereed: Yes
URI: http://nectar.northampton.ac.uk/id/eprint/1225

Actions (login required)

Edit Item Edit Item