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Data fusion for combining techniques to detect and size surface and near-surface defects
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Edwards, R. S. (Rachel S.), Sophian, A., Dixon, S. and Tian, G. Y. (2007) Data fusion for combining techniques to detect and size surface and near-surface defects. In: 33rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Portland, Oregon, 30 Jul - 4 Aug 2006. Published in: Review of Progress in Quantitative Nondestructive Evaluation, Vols 26A and 26B, Volume 89 pp. 619-626. ISBN 9780735403994. doi:10.1063/1.2718028 ISSN 0094-243X.
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Official URL: http://dx.doi.org/10.1063/1.2718028
Abstract
In NDT it is important to have a high probability of detection and reliable sizing of defects in a sample. This can be gained by using several techniques, which leads to an increase in cost and time for testing. Another option is to use several techniques combined into a single probe, in which case data fusion for the techniques is possible. We report measurements using a dual probe containing a pair of electro-magnetic acoustic transducers generating and detecting low frequency broadband ultrasonic surface waves, combined with a pulsed eddy current probe. These two techniques are complementary but can be combined to work as competitive or cooperative sensors depending on the type of defect being investigated. Our work gives the depth of surface breaking defects by performing data fusion on certain features of data from each technique in a competitive sense, with data fusion by mathematical algorithm. Further analysis of the results using cooperative data fusion can give details of the depth and type of defect, for example surface breaking or near surface. The dual probe has been demonstrated on several samples, including aluminium and steel samples with several simulated defects on each side.
| Item Type: | Conference Item (UNSPECIFIED) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| 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 | ||||
| Editor: | Thompson, D. O. and Chimenti, D. E. | ||||
| Official Date: | 2007 | ||||
| Dates: |
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| Volume: | Volume 89 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | pp. 619-626 | ||||
| DOI: | 10.1063/1.2718028 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| 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 - 4 Aug 2006 |
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