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Localisation of defects with time and frequency measurements using pulsed arrays
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Hill, Samuel Joseph and Dixon, Steve M. (2014) Localisation of defects with time and frequency measurements using pulsed arrays. NDT & E International, Volume 67 . pp. 24-30. doi:10.1016/j.ndteint.2014.06.008 ISSN 0963-8695.
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WRAP_Hill_1-s2.0-S0963869514000875-main.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution. Download (1269Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.ndteint.2014.06.008
Abstract
The frequency dependent directivity of the periodic permanent magnet transducer is to used extract information about the position of any discontinuities present in a sample. Two approaches are used; narrowband excitation, and broadband pulsed generation. Simultaneous narrowband excitation, with the appropriate frequency, can be used to steer the ultrasound to a particular angle. Broadband excitation emits a wavefront that extends over a large range of angles, with the frequency of the wavefront varying smoothly as a function of angle. Using these two approaches, two-dimensional maps of any defects present in the sample can be obtained.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Ultrasonic testing | ||||||||||
| Journal or Publication Title: | NDT & E International | ||||||||||
| Publisher: | Elsevier Sci Ltd. | ||||||||||
| ISSN: | 0963-8695 | ||||||||||
| Official Date: | October 2014 | ||||||||||
| Dates: |
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| Volume: | Volume 67 | ||||||||||
| Page Range: | pp. 24-30 | ||||||||||
| DOI: | 10.1016/j.ndteint.2014.06.008 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||
| Date of first compliant deposit: | 27 December 2015 | ||||||||||
| Date of first compliant Open Access: | 27 December 2015 | ||||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
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