Fatigue strength properties in rail axles refurbished by laser cladding

Refurbishment of rail axles using laser cladding technology has been investigated. Some physical properties of rail axles after repairing their journals with this technology were previously reported and this project is a further step in providing a deeper insight into the process from a mechanical point of view. This has been done by acquiring fatigue strength measurements using a standard rotating bending fatigue technique. A high power industrial laser system was used to deposit an alloy on the journals which were worn to sizes under acceptable tolerances. The effects of this thermal metal deposition process on the fatigue strength of rail axles were investigated. A range of different parameters were trialled which can be interpreted as different metal deposition thicknesses and heat inputs to the part. The distortion of the samples was measured and analysed. The study revealed that the laser cladding process did not adversely affect the fatigue strength of the rail axles.

Media Info

  • Pagination: 4p. ; PDF
  • Monograph Title: Rail - the core of integrated transport: CORE 2012: conference on railway engineering, 7-10 September 2012, Perth, Western Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01532119
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Jul 29 2014 11:56AM