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eLibrary Search

The FRA eLibrary contains all the documents that are found throughout the FRA Public Website. Multiple pages on the website may link to the same eLibrary item based on its set of metatdata.

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25 Jul 2014

Technical Reports

Evaluation of Wheel/Rail Contact Mechanics: Concepts Report

Author
Mehdi Ahmadian and Michael Craft

Subject Track, Tracks & Structures, Track/Train Interactions

Keywords: Roller Rig, Wheel-Rail Contact Mechanics, Rail Vehicle Dynamics, Contact Patch Dynamics, Wheel Forces and Moments

Abstract: A need exists for a new test rig design with advanced sensing technologies that will allow the railroad industry and regulatory agencies to better understand the wheel-rail...

Report Number
DOT/FRA/ORD-14/28
Office
RDI-21

24 Jul 2014

Research Results

UIUC Concrete Tie and Fastener Field Testing at TTC

Author
Cameron Stuart

Subject Track, Track/Train Interactions, Tracks & Structures

Keywords: Concrete crossties, elastic fastening systems, field instrumentation, concrete sleepers, loading conditions, displacements

Report Number
RR 14-23
Office
RDI-21

24 Jul 2014

Research Results

Ground Penetrating Radar Evaluation and Implementation

Author
Hugh B. Thompson II and Gary Carr

Subject Track, Track/Train Interactions, Tracks & Structures

Keywords: GPR, ground penetrating radar, ballast, subballast, substructure, fouled ballast, ballast moisture

Report Number
RR 14-24
Office
RDI-21

24 Jul 2014

Technical Reports

Construction Loads Experienced by Plastic Composite Ties

Author
Richard Reiff

Subject Track, Tracks & Structures, Track/Train Interactions

Keywords: Plastic tie, composite tie, tie insertion, tie nipping, bending loads

Abstract: Damage to plastic composite ties during handling and track installation has been reported by a number of railroads. Results from a survey conducted to identify specific handling...

Report Number
DOT/FRA/ORD-14/25
Office
RDI-21

24 Jul 2014

Technical Reports

Multifunction LIDAR Sensors for Noncontact, Speed, and Complex Rail Dynamics

Author
Mehdi Ahmadian, Michael Craft and Cameron Stuart

Subject Track, Tracks & Structures, Track/Train Interactions

Keywords: LIDAR, noncontact velocity measurement, curvature, alignment, ATGMS, track geometry, Railway Technologies Laboratory, Virginia Tech

Abstract: The results of an extensive series of tests are presented to evaluate the viability and applicability of LIDAR systems for measuring track speed, distance, and curvature in...

Report Number
DOT/FRA/ORD-14/26
Office
RDI-21