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Coded waveforms for optimised air-coupled ultrasonic nondestructive evaluation
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Hutchins, David A., Burrascano, Pietro, Davis, Lee A. J., Laureti, Stefano and Ricci, Marco (2014) Coded waveforms for optimised air-coupled ultrasonic nondestructive evaluation. Ultrasonics, 54 (7). pp. 1745-1759. doi:10.1016/j.ultras.2014.03.007 ISSN 0041-624X.
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WRAP-coded-waveforms-optimised-air-coupled-ultrasonic-nondestructive-evaluation-Hutchins-2014.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (978Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.ultras.2014.03.007
Abstract
This paper investigates various types of coded waveforms that could be used for air-coupled ultrasound, using a pulse compression approach to signal processing. These are needed because of the low signal-to-noise ratios that are found in many air-coupled ultrasonic nondestructive evaluation measurements, due to the large acoustic mismatch between air and many solid materials. The various waveforms, including both swept-frequency signals and those with binary modulation, are described, and their performance in the presence of noise is compared. It is shown that the optimum choice of modulation signal depends on the bandwidth available and the type of measurement being made.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Journal or Publication Title: | Ultrasonics | ||||||||
Publisher: | Elsevier Science BV | ||||||||
ISSN: | 0041-624X | ||||||||
Official Date: | September 2014 | ||||||||
Dates: |
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Volume: | 54 | ||||||||
Number: | 7 | ||||||||
Page Range: | pp. 1745-1759 | ||||||||
DOI: | 10.1016/j.ultras.2014.03.007 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 7 December 2018 | ||||||||
Date of first compliant Open Access: | 7 December 2018 |
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