Heavy rail

Characterization of wheel-rail contact

Assessing the main wheel-rail contact parameters for international type approval and check rolling stock behaviour in relation to the risk of instability.

Tests objectives

  • Measure wheel and rail profiles
  • Establish wheel-rail contact parameters: Equivalent conicity, real conicity, radial steering index, etc.

Tests facilities

  • Gauge for spot measurement of wheel and rail profiles
  • Calculation software for wheel-rail contact parameters

Testing norms

NF EN 14363 – Testing for the acceptance of running characteristics of railway vehicles – Testing of running behaviour and stationary tests

NF EN 15302 – Method for determining the equivalent conicity

UIC 518 OR – Testing and approval of railway vehicles from the point of view of their dynamic behaviour – Safety – Track fatigue – Ride quality

UIC 519 OR – Method for determining the equivalent conicity

Caractérisation contact roue-rail

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