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In-situ monitoring of fatigue crack growth using high frequency guided waves

Masserey, B; Fromme, P; (2015) In-situ monitoring of fatigue crack growth using high frequency guided waves. NDT & E International , 71 pp. 1-7. 10.1016/j.ndteint.2014.12.007. Green open access

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Abstract

The development of fatigue cracks at fastener holes represents a common maintenance problem for aircraft. High frequency guided ultrasonic waves allow for the monitoring of critical areas without direct access to the defect location. During cyclic loading of tensile, aluminum specimens fatigue crack growth at the side of a fastener hole was monitored. The changes in the energy ratio of the baseline subtracted reflected guided wave signal due to the fatigue damage were monitored from a stand-off distance using standard ultrasonic pulse–echo measurement equipment. Good sensitivity for the detection and monitoring of fatigue crack growth was found.

Type: Article
Title: In-situ monitoring of fatigue crack growth using high frequency guided waves
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ndteint.2014.12.007
Publisher version: http://dx.doi.org/10.1016/j.ndteint.2014.12.007
Language: English
Additional information: This work is licensed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivativeWorks 3.0 license. You are free to share (copy, distribute and transmit the work), but you must attribute the author, you may not use this work for commercial purposes and you may not alter, transform, or build upon this work and distribute any derivative works you create under a similar license.
Keywords: Fatigue crack, Monitoring, High frequency guided ultrasonic waves, P/E measurement, Lamb wave modes
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1461306
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