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Electrostatic capacitive imaging : a new NDE technique
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Diamond, G. G., Hutchins, David A., Leong, Kennith Kin and Gan, T. H. (2007) Electrostatic capacitive imaging : a new NDE technique. In: 33rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Portland, Oregon, 30 Jul - 04 Aug 2006. Published in: Review of Progress in Quantitative Nondestructive Evaluation, Vols 26A and 26B, Volume 894 pp. 689-694. ISBN 9780735403994. doi:10.1063/1.2718037 ISSN 0094-243X.
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Official URL: http://dx.doi.org/10.1063/1.2718037
Abstract
A new technique for NDE has been developed which is capable of imaging a wide range of materials and structures, ranging from insulators to metallic conductors. The approach, known as Capacitive Imaging (CI) uses electrode arrays in air to produce an AC electric field distribution within the material. Scanning the electrodes over the material causes a change in the field distribution, and hence changes in output voltage. Capacitive coupling allows the technique to work on a wide variety of material conductivities without some of the disadvantages associated with conventional eddy current and potential drop methods. Images are presented of carbon fibre composite materials, concrete and Plexiglas, illustrating the range of application in NDE. The effect of electrode shape and excitation frequency will be discussed in terms of image resolution and depth of penetration.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Series Name: | AIP Conference Proceedings | ||||
| Journal or Publication Title: | Review of Progress in Quantitative Nondestructive Evaluation, Vols 26A and 26B | ||||
| Publisher: | American Institute of Physics | ||||
| ISBN: | 9780735403994 | ||||
| ISSN: | 0094-243X | ||||
| Book Title: | AIP Conference Proceedings | ||||
| Editor: | Thompson, D. O. and Chimenti, D. E. | ||||
| Official Date: | 2007 | ||||
| Dates: |
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| Volume: | Volume 894 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 689-694 | ||||
| DOI: | 10.1063/1.2718037 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 33rd Annual Review of Progress in Quantitative Nondestructive Evaluation | ||||
| Type of Event: | Other | ||||
| Location of Event: | Portland, Oregon | ||||
| Date(s) of Event: | 30 Jul - 04 Aug 2006 |
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