Experimental investigation of wear modes of hardened rail material used in Australian heavy-haul railways
Athukorala, Asitha, Wickramasinghe, Isuru Udara, & De Pellegrin, Dennis (2015) Experimental investigation of wear modes of hardened rail material used in Australian heavy-haul railways. In 10th International Conference on Contact Mechanics, 30 August - 3 September 2015, Colorado Springs, Colorado.
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This work investigates the effects of contact pressure and geometry in rolling-contact wear tests by using discs with different radii of curvature to simulate the varying contact conditions that may be typically found in the field. The tests were conducted without any significant amount of traction, but micro slip was still observed due to contact deformation. Moreover, variation of contact pressure was observed due to contact patch elongation and diameter reduction. Rolling contact fatigue, adhesive and sliding wear were observed on the curved contact interface. The development of different wear regimes and material removal phenomena were analyzed using microscopic images in order to broaden the understanding of the wear mechanisms occurring in the rail-wheel contact.
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