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Ultrasonic Lamb wave tomography using scanned EMATs and wavelet processing
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Ho, K. S., Billson, Duncan R. and Hutchins, David A. (2007) Ultrasonic Lamb wave tomography using scanned EMATs and wavelet processing. Nondestructive Testing and Evaluation, Vol.22 (No.1). pp. 19-34. doi:10.1080/10589750701327890 ISSN 1058-9759.
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Official URL: http://dx.doi.org/10.1080/10589750701327890
Abstract
A continuous wavelet transform has been used to analyse multi-mode Lamb wave propagation. This was applied to experimental data from non-contact electromagnetic acoustic transducers (EMATs) in thin metal plates. The technique was able to identify the presence of s(0), a(0), a(1), s(1) and s(2) modes in an aluminium plate from a single waveform, and hence to separate the modes. The technique has been applied to tomographic reconstruction of artificial defects in plates from individual modes to illustrate the usefulness of the approach.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Journal or Publication Title: | Nondestructive Testing and Evaluation | ||||
| Publisher: | Taylor & Francis Ltd. | ||||
| ISSN: | 1058-9759 | ||||
| Official Date: | March 2007 | ||||
| Dates: |
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| Volume: | Vol.22 | ||||
| Number: | No.1 | ||||
| Number of Pages: | 16 | ||||
| Page Range: | pp. 19-34 | ||||
| DOI: | 10.1080/10589750701327890 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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