Avoiding fatigue cracking in rail-freight vehicles

Over the last 40 years BMT WBM has assisted many freight operators in Australia to extend the life of their aging fleets of vehicles through a program of measurement, computational structural assessment and pragmatic re-design. Many of the problems identified in these processes re-occur. The re-occurring nature of these problems indicates that either rail vehicle designers are not assessing the vehicle structures against criteria that would suitably identify issues at the design stage, or that the specifications and audits of the designs are ineffective. In some cases in-service damage can be due to the sensitivity of a design to an unexpected load case or a peculiarity of material and structural connection properties. In other cases, it can be due to incorrect correlation of fatigue characteristics with the calculated stress field. This presentation reviews the current best practice in providing effective audits of freight vehicles, including both computational and measurement based audit methods. Case studies in the mining industry demonstrate the process in practice, including the beneficial outcomes. The presentation will also provide insights into how to build suitable endurance assessment criteria into new vehicle specifications.

Media Info

  • Pagination: 10p.
  • Monograph Title: Rejuvenation and renaissance: CORE 2010: conference on railway engineering, 12-15 September 2010, Wellington, New Zealand

Subject/Index Terms

Filing Info

  • Accession Number: 01517096
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Mar 4 2014 8:07PM