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19
Sep
2024
Research Results
Railroad Spike Failure Mitigation: Investigation of Tie Plate Hold-Down Elements
Subject
Research,
Track
Keywords: Broken spikes; spring washers; spring specifications; hold-down load; resiliency; elastic fasteners; stress relaxation
Abstract:
The Rail Transportation and Engineering Center (RailTEC) at the University of Illinois Urbana-Champaign (UIUC) investigated methods to mitigate timber tie spike failures. This...
Report Number
RR 24-11
Office
RDI-21
30
Aug
2024
Technical Reports
An Investigation of the Effects of Positive Train Control Systems on Track Maintenance
Subject
Research,
Track
Keywords: Positive Train Control; PTC; Maintenance of Way; MOW; roadway worker protection; RWP; Employee-in-Charge; EIC; Roadway Worker in Charge; RWIC
Abstract:
The Federal Railroad Administration (FRA) contracted Transportation Technology Center, Inc. (TTCI) to conduct a broad analysis of the impacts of Positive Train Control (PTC)...
Report Number
DOT/FRA/ORD-24/32
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
9
Feb
2024
Technical Reports
Mechanistic Investigation of Timber Crosstie Spike Fastener Failures – Phase I: The Magnitude of the Spike Failure Challenge
Subject
Track
Keywords: track research, cut spikes, drive spikes, screw spikes, elastic fastening systems, failure analysis, broken spikes
Abstract:
The Rail Transportation and Engineering Center (RailTEC) at the University of Illinois at Urbana-Champaign (UIUC) performed a literature review, conducted an industry-wide...
Report Number
DOT/FRA/ORD-24-06
Office
RDI-21
11
Aug
2023
Technical Reports
Measurement and Characterization of Track Geometry Data: Literature Review and Recommendations for Processing FRA ATIP Program Data
Subject
Track
Keywords: Track geometry, track quality, track irregularities, space curve, Track Quality Index, TQI, Track Geometry Measurement System, TGMS, Automated Track Inspection Program, ATIP, Power Spectral Density, PSD
Abstract:
From October 2018 to March 2019, the Federal Railroad Administration sponsored Transportation Technology Center, Inc. to conduct a literature review on the methods of...
Report Number
DOT/FRA/ORD-23/21
Office
RDI-21