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Investigation of a new feature for angular defect quantification by eddy current pulsed thermography

Lookup NU author(s): Junzhen Zhu, Professor Gui Yun TianORCiD


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© 2018 IEEE. Eddy current pulsed thermography (ECPT) as one of the emerging NDT&E techniques has been used for the evaluation of the integrity of rail tracks, especially for rolling contact fatigue (RCF) or angular defect detection and quantification. This paper proposed a new feature for angular defect quantification. Specifically, first-order differential of the transient thermal response was first obtained. Then a new feature derived from the first-order differential result was used to quantify the length of the angular slot. R-squared value and 2-norm of the residual were used to evaluate and compare the fitted linear relationship between different extracted features and the angular slot lengths. Through the comparison with other features, the strength and limitation of this new feature were summarized.

Publication metadata

Author(s): Zhu J, Tian G, Duan W

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: IEEE International Instrumentation and Measurement Technology Conference: Discovering New Horizons in Instrumentation and Measurement, I2MTC 2018

Year of Conference: 2018

Pages: 1-6

Online publication date: 12/07/2018

Acceptance date: 02/04/2018

Publisher: Institute of Electrical and Electronics Engineers Inc.


DOI: 10.1109/I2MTC.2018.8409785

Library holdings: Search Newcastle University Library for this item

ISBN: 9781538622223