Synchrotron X-ray measurement of residual strain within the nose of a worn manganese steel railway crossing

S. Dhar, Y. Zhang, Ruichao Xu, Hilmar Kjartansson Danielsen, Dorte Juul Jensen

    Research output: Contribution to journalJournal articleResearchpeer-review

    382 Downloads (Pure)


    Switches and crossings are an integral part of any railway network. Plastic deformation associated with wear and rolling contact fatigue due to repeated passage of trains cause severe damage leading to the formation of surface and sub-surface cracks which ultimately may result in rail failure. Knowledge of the internal stress distribution adds to the understanding of crack propagation and may thus help to prevent catastrophic rail failures. In this work, the residual strains inside the bulk of a damaged nose of a manganese railway crossing that was in service for five years has been investigated by using differential aperture synchrotron X-ray diffraction. The main purpose of this paper is to describe how this method allows non-destructive measurement of residual strains in selected local volumes in the bulk of the rail. Measurements were conducted on the transverse surface at a position about 6.5 mm from the rail running surface of a crossing nose. The results revealed the presence of significant compressive residual strains along the running direction of the rail.
    Original languageEnglish
    JournalI O P Conference Series: Materials Science and Engineering
    Number of pages6
    Publication statusPublished - 2017


    Dive into the research topics of 'Synchrotron X-ray measurement of residual strain within the nose of a worn manganese steel railway crossing'. Together they form a unique fingerprint.

    Cite this