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Ultrasonic metal sheet thickness measurement without prior wave speed calibration
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Dixon, S., Petcher, P. A., Fan, Yichao, Maisey, D. and Nickolds, Piers (2013) Ultrasonic metal sheet thickness measurement without prior wave speed calibration. Journal of Physics D: Applied Physics, Volume 46 (Number 44). Article number 445502. doi:10.1088/0022-3727/46/44/445502 ISSN 0022-3727.
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Official URL: http://dx.doi.org/10.1088/0022-3727/46/44/445502
Abstract
Conventional ultrasonic mensuration of sample thickness from one side only requires the bulk
wave reverberation time and a calibration speed. This speed changes with temperature, stress,
and microstructure, limiting thickness measurement accuracy. Often, only one side of a
sample is accessible, making in situ calibration impossible. Non-contact ultrasound can
generate multiple shear horizontal guided wave modes on one side of a metal plate. Measuring
propagation times of each mode at different transducer separations, allows sheet thickness to
be calculated to better than 1% accuracy for sheets of at least 1.5 mm thickness, without any
calibration.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Metals, Ultrasonic waves -- Industrial applications, Calibration , Physical measurements | ||||
Journal or Publication Title: | Journal of Physics D: Applied Physics | ||||
Publisher: | IOP Publishing | ||||
ISSN: | 0022-3727 | ||||
Official Date: | 2013 | ||||
Dates: |
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Volume: | Volume 46 | ||||
Number: | Number 44 | ||||
Page Range: | Article number 445502 | ||||
DOI: | 10.1088/0022-3727/46/44/445502 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Date of first compliant deposit: | 26 December 2015 | ||||
Date of first compliant Open Access: | 26 December 2015 | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
Grant number: | EP/I03160X/1 (EPSRC) |
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