Improving railway infrastructure productivity by sustainable two material rail development

The InfraStar project developed a two-material rail to increase the productivity and reliability of rail infrastructure. The two-material rail aims to be rolling contact fatigue (RCF) resistant and to reduce squeal noise. The InfraStar consortium has built a high level of wheel-rail expertise and understanding regarding RCF initiation and development, level and position of wheel-rail contact forces, and new interface materials and has gained experience in both laboratory and field test operating conditions.Within the project a validated theoretical train-track interaction model and a fatigue design model for two-material rails have been developed. Results are very promising. The two-material rail prototypes, now over a few years in track, show no RCF damage where the non-treated rail shows clear RCF damage.  

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