Evaluation of rail decarburisation depth using a H-shaped electromagnetic sensor

W Zhu, Sam Cruchley, W Yin, Xinjiang Hao, Claire Davis, AJ Peyton

Research output: Contribution to journalArticle

12 Citations (Scopus)


This paper reports the evaluation of rail decarburisation based on eddy current methods using an H-shaped sensor. Rails with different levels of decarburisation, due to different bloom reheat times (195 min-613 min), were used. Experimental results have indicated that the measured inductance of the sensor is closely related to the reheat furnace dwell time of the rail samples. Quantification of the amount of decarburisation, using micro-hardness tests and visual evaluation, and the predicted amount (based on Fick's law), have been compared with the eddy current approach, with reasonable agreement being seen. (C) 2011 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)63-69
Number of pages7
JournalNDT & E International
Publication statusPublished - 1 Mar 2012


  • Electromagnetic sensor
  • Rail decarburisation
  • Eddy current method


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