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4
Oct
2024
Technical Reports
Modeling the Effects of Top-of-Rail Products on Creep Forces in the Wheel-Rail Interface
Subject
Track
Keywords: Wheel/rail interface; friction management; top-of-rail products; friction measurement; friction modelling
Abstract: The main aim of this project was to develop a wheel-rail creep force model that accounts for the effects of third-body layers resulting from the...
Report Number
DOT/FRA/ORD-24/42
Office
RDI-21
12
Sep
2024
Technical Reports
Advanced Track Geometry Forecasting Methods
Subject
Research,
Track
Keywords: Prediction; forecast; track geometry; time series; degradation; Autonomous Track Geometry Measurement System; ATGMS
Abstract: The Federal Railroad Administration (FRA) contracted ENSCO, Inc., to apply alternative forecasting approaches to foot-by-foot track geometry data. The research team used track...
Report Number
DOT/FRA/ORD-24/37
Office
RDI-21
30
Aug
2024
Technical Reports
Monitoring and Modeling of Differential Movement at Railway Transitions
Subject
Research,
Track
Keywords: Transition zones; differential movement; bridge approach; unsupported; track geometry; track modulus; modulus
Abstract: The Federal Railroad Administration sponsored a research team from the University of Illinois at Urbana-Champaign to conduct laboratory and field research of railroad bridge...
Report Number
DOT/FRA/ORD-24/30
Office
RDI-21
29
Aug
2024
Technical Reports
Automated Weld Repair of Manganese Frogs for Extended Service Life
Subject
Research,
Track
Keywords: Constant voltage; CV; flux-cored arc welding; FCAW; pulse gas metal arc welding; GMAW-P; radiographic testing; RT; ultimate tensile strength; UTS; yield strength; YS; rail frog; rail turnout; frog point; frog wings; solid state welding
Abstract: EWI completed research and testing of an automated weld repair process for austenitic manganese steel railroad frogs. This report covers the second of two projects sponsored by...
Report Number
DOT/FRA/ORD-24/29
Office
RDI-21
17
May
2024
Technical Reports
Reference Document: Reducing Hazards Associated with Visual and Automation-Aided Track Inspections: Supplementary Information
Subject
Track
Keywords: Track research, track inspection, inspection, automated inspection, automation-aided inspection, railroad, track safety, safety, human factors, passenger rail, systems-theoretic process analysis, STPA, STAMP, track geometry measurement system, TGMS, aTGMS
Abstract: This document provides supplementary information to accompany the previously published Federal Railroad Administration (FRA) report titled Reducing Hazards Associated with...
Report Number
Supplementary Reference Document for DOT/FRA/ORD-2
Office
RDI-21