Wheel Performance

The Monash Institute of Railway Technology utilises its materials and vehicle dynamics knowledge to deliver applied research to wheel performance.

Key areas of expertise include:

• Metallurgical analysis of wheel defects and failures
• Cleanliness assessment using ultrasonic phased array testing
• Destructive and non-destructive measurement of residual stresses
• Assessment and qualification of wheel materials to industry requirements

Common issues which can be resolved are the combination of mechanical and thermal loads in freight and heavy haul, which contributes to increased rates of deterioration. Inadvertent overheating through the application of friction braking may also alter the residual stress distribution and increase the risk of wheel failure. Disc braked system is passenger vehicles can also suffer from defects such as polygonisation or other traction and braking induced defects.