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5
Aug
2024
Technical Reports
Relationship of Inspection Methods to Ballast Degradation Models: Phase II
Subject
Research,
Track
Keywords: Ballast, settlement, mud pumping, fouling index, forecasting, track inspection, track modulus, track, Railway Track Lifecycle Model, RTLM
Abstract: This report is a follow on of the first phase of a Federal Railroad Administration (FRA)-sponsored project to evaluate lateral ballast behavior and...
Report Number
DOT/FRA/ORD-24/26
Office
RDI-21
5
Jul
2024
Research Results
Full-Scale Shell Impact Test of a DOT-105J500W Tank Car Designed to Carry Liquid Carbon Dioxide
Subject
Research,
Rolling Stock
Keywords: DOT-105, tank cars, impact testing, puncture resistance, hazardous materials, hazmat, finite element analysis, model validation, carbon dioxide
Report Number
RR 24-07
Office
RDI-22
3
Jun
2024
Technical Reports
Ballast Fouling Measurement Tool – Phase II
Subject
Research,
Track
Keywords: Ground-penetrating radar, ballast, fouling, moisture
Abstract: Researchers developed a second-generation RAdar Ballast Inspection Tool (RABIT) using ground-penetrating radar (GPR) for use by track inspectors. This system is much lighter (...
Report Number
DOT/FRA/ORD-24/22
Office
RDI-21
3
Jun
2024
Technical Reports
Mitigation of Differential Movement at Railway Transitions for U.S. High-Speed Passenger Rail and Joint Passenger/Freight Corridors
Subject
Research,
Track
Keywords: Railway transitions; bridge approach; differential movement; high-speed passenger rail; freight rail; ballast; tie-ballast gap; settlement; transient response; numerical modeling
Abstract: To address the need to minimize differential movement at railway transitions for joint high-speed passenger and freight routes in the U.S., this research study identified and...
Report Number
DOT/FRA/ORD-24/21
Office
RDI-21
29
Feb
2024