Modelling and experimental measurements of idealised and light-moderate RCF cracks in rails using an ACFM sensor

Gemma Nicholson, Andrii Kostryzhev, Xinjiang Hao, Claire Davis

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Alternating current field measurement (ACFM) sensors can be used to detect surface breaking defects in metal components. In rails rolling contact fatigue (RCF) cracks form due to the wheel-rail contact stresses. These cracks are surface breaking and can have complex shapes. A COMSOL model has been developed for a commercial ACFM system and RCF cracks in rails. In this paper model results are compared to experimental measurements using an ACFM pencil probe for calibration defects machined into a rail and real RCF defects (light and moderate categories;
Original languageEnglish
Pages (from-to)427-437
Number of pages11
JournalNDT & E International
Volume44
Issue number5
DOIs
Publication statusPublished - 1 Sep 2011

Keywords

  • ACFM sensor
  • Rails
  • Rolling contact fatigue cracks
  • Modelling

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