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Prediction of RCF clustered cracks dimensions using an ACFM sensor and influence of crack length and vertical angle

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Shen, Jialong, Zhou, Lei, Rowshandel, H., Nicholson, G. L. and Davis, Claire (2019) Prediction of RCF clustered cracks dimensions using an ACFM sensor and influence of crack length and vertical angle. Nondestructive Testing and Evaluation . pp. 1-18. doi:10.1080/10589759.2019.1611817 (In Press)

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Official URL: http://doi.org/10.1080/10589759.2019.1611817

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Abstract

Rolling contact fatigue (RCF) cracks are the predominant reason for rail grinding maintenance and replacement on all types of railway system, as they can potentially cause rail break if not removed. To avoid excessive material removal, accurate crack sizing is required. Alternating current field measurement has been used as an electromagnetic method for RCF crack sizing, incorporating with modelling results for single RCF cracks with large vertical angles (>30°). No study using this knowledge to size shallow angled crack clusters has yet been reported. A novel method, the pocket length compensation method, is proposed to determine the length and depth of RCF cracks with shallow vertical angles. For shallow crack clusters, vertical angle predictions are close to the measured values with a deviation of less than 13.6%. Errors in crack pocket length prediction are greatly reduced when the pocket length compensation was included. The predicted vertical depth using the approach developed for clustered angled cracks is accurate with errors <8.3%, which compares to errors of up to 60% if the single RCF crack approach is used and errors of up to 21.4% if a non-compensated prediction for crack clusters is used.

Item Type: Journal Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Rolling contact, Alloys -- Fatigue, Railroad rails -- Defects, Electric currents, Alternating -- Measurement, Railroad engineering
Journal or Publication Title: Nondestructive Testing and Evaluation
Publisher: Taylor & Francis Ltd.
ISSN: 1058-9759
Official Date: 9 May 2019
Dates:
DateEvent
9 May 2019Published
22 April 2019Accepted
Date of first compliant deposit: 26 July 2019
Page Range: pp. 1-18
DOI: 10.1080/10589759.2019.1611817
Status: Peer Reviewed
Publication Status: In Press
Publisher Statement: “This is an Accepted Manuscript of an article published by Taylor & Francis in Nondestructive Testing and Evaluation on 9/05/2019, available online: http://www.tandfonline.com/10.1080/10589759.2019.1611817
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDChina Scholarship Councilhttp://dx.doi.org/10.13039/501100004543
UNSPECIFIEDUniversity of Warwickhttp://dx.doi.org/10.13039/501100000741

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