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This article describes the wheel-rail interface management (WRIM) model being developed by Transportation Technology Center Inc. to evaluate wheel-rail interface conditions, plan wheel-rail maintenance, and develop strategies to improve railway system performance. The WRIM software integrates wheel-rail profile measurement data, vehicle performance data, track geometry data, and rail steel properties to predict rail wear and rolling contact fatigue (RCF) based on the shakedown theory, an energy-based RCF damage function, and existing wear rate computation algorithms.

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