With the development and operation of high speed trains, condition based maintenance becomes an important approach for the improvement of reliability and safety of rail transportation. This paper reports a feasibility study using pulsed eddy current thermography for imaging multiple cracks caused by rolling contact fatigue (RCF). After reviewing rail track inspection and RCF cracks, a PEC thermography system is introduced and applied to the imaging of multiple rolling contact fatigue cracks. Potential on-line inspection for rail track is also discussed.
Wilson, J., Tian, G., Mukriz, I., & Almond, D. (2011). PEC thermography for imaging multiple cracks from rolling contact fatigue. NDT and E International, 44(6), 505-512. https://doi.org/10.1016/j.ndteint.2011.05.004