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Keywords: Buy America MTA PTC Positive Train Control RRIF
Keywords: Transverse cracks; ultrasonic guided waves; noncontact ultrasonic testing; laser ultrasonic; air-coupled sensors; finite element modeling; automatic defect classification
Abstract: The objectives of this project were (1) to improve the defect detection reliability and (2) to improve the inspection speed of conventional rail defect detection methods. The...
Investigation of the Effects of Tie Pad Stiffness on the Impact Loading of Concrete Ties in the Northeast Corridor
Keywords: Concrete ties, Fasteners, Track stiffness
Abstract: This investigation was conducated in response to the discovery in June 1980, that rail seat bending cracks had developed in many concrete ties which had been in service on the...