The rig targets at understanding and estimating the service performance of wheel-rail materials. Both wheel-rail rolling contact stress and rail bending stress are taken into consideration. Possible applications of this rig are to reproduce and examine high-speed wheel rail damages, to optimize the match of wheel-rail materials and so on.

Functions:

●  Investigate the effect of both wheel-rail rolling contact stress and rail bending stress on the service performance of wheel-rail materials.

●  Study wheel-rail rolling contact fatigue such as spalling, shelling, headcheck and squats. Different profiles, materials and surface hardness are taken into account.

●  Examine the uniform and non-uniform wear occurring on wheel and rail contact surfaces for different profiles, materials and surface hardness.

Main technical parameters:

●  Maximum test speed: 380 km/h

●  Diameter of rail mounted disk: 3.2 m

●  Maximum wheel load: 15 kN

●  Maximum wheel traction force: 7.5 kN

●  Maximum driving moment applied to wheel: 2.1 kN•m

●  Angle of attack: -4°~4°

●  Lateral shift of wheel: to be able to simulate the contact between the rail gauge corner and wheel flange fillet and the contact between the field sides of both wheel and rail.