University of Hertfordshire

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Original languageEnglish
Title of host publicationI2MTC 2018 - 2018 IEEE International Instrumentation and Measurement Technology Conference
Subtitle of host publicationDiscovering New Horizons in Instrumentation and Measurement, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538622223
DOIs
Publication statusPublished - 10 Jul 2018
Event2018 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2018 - Houston, United States
Duration: 14 May 201817 May 2018

Publication series

NameI2MTC 2018 - 2018 IEEE International Instrumentation and Measurement Technology Conference: Discovering New Horizons in Instrumentation and Measurement, Proceedings

Conference

Conference2018 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2018
CountryUnited States
CityHouston
Period14/05/1817/05/18

Abstract

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.

ID: 17630769