AXLE INSPECTION: THE USE OF MONTE-CARLO ANALYSIS AND RISK ASSESSMENT TO OPTIMIZE AXLE INSPECTION INTERVAL

The depot-based ultrasonic inspection of axles is a time consuming process, which increases the risk of bearing failures because of the necessity of removing and refitting bearing end caps. If the axle examination process could safely be extended to wheelset overhaul periods, when the axle was stripped, operating costs would be reduced, vehicle availability would be increased and there would be no increased risk of bearing failure because of end cap removal and replacement. This paper utilises Fracture mechanics, Monte-Carlo simulation and risk assessment methods to define a methodology for setting the NDT inspection periodicity of axles. The objective is to show that there is a technical justification for extending axle inspection, in some cases to wheelset overhaul intervals, while retaining the balance of acceptable risk and maintenance cost. The method described shows that the introduction of Magnetic Particle Inspection (MPI) with its greater sensitivity has significant advantages over Ultrasonic Axle Testing (UAT) methods. (A) For the covering abstract see IRRD E104477.

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  • Authors:
    • ROSE, K(CHA)
    • BENYON, J A
    • WATSON, A S
  • Publication Date: 1999

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 13-20
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00790305
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 1-86058-242-7
  • Files: ITRD
  • Created Date: Apr 11 2000 12:00AM