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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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15 Sep 2017

Technical Reports

Monitoring Longitudinal Rail Stress Using Diffuse Ultrasonic Backscatter

Author
Federal Railroad Administration

Subject Rail and Infrastructure Integrity

Keywords: stress in rail; ultrasonic transducers; ultrasound scattering; theoretical model of the scattering process; prototype devices for stress estimations in rail; laboratory and field tests

Abstract: In this report, research was conducted at the University of Nebraska-Lincoln pertaining to the use of ultrasound scattering from polycrystalline grains to estimate and monitor...

Report Number
DOT/FRA/ORD-17/15
Office
RDI-21

13 Jan 2017

Technical Reports

Weld Repair of Manganese Frogs for Enhanced Performance

Author
Federal Railroad Administration

Subject Best Practices, Rail and Infrastructure Integrity, Track

Keywords: Reciprocating wire feed, constant voltage, Flux-Cored Arc Welding, heat-affected zone, radiographic testing, Shielded Metal Arc Welding, ultimate tensile strength, yield strength.

Abstract:

When special trackwork contact surfaces (such as manganese-steel turnout frogs) become worn and damaged, they can be repaired to extend their lifetime, but current repair...

Report Number
DOT/FRA/ORD-17/01
Office
RRD

4 Apr 2014

Technical Reports

Quantification of the Effectiveness of Handheld Equipment for Ground Verification of Detected Rail Internal Defects

Author
Leith Al-Nazer (Federal Railroad Administration), Dr. Thomas Raslear (Federal Railroad Administration), Lucas R. Welander (Transportation Technology Center, Inc.)

Subject Rail and Infrastructure Integrity, Track, Tracks & Structures

Keywords: Ultrasonic phased arrays, conventional ultrasonic, rail flaw sizing, nondestructive testing

Abstract: The objective of this project was to quantify the effectiveness of the rail inspection ground verification process. More specifically, the project focused on comparing the...

Report Number
DOT/FRA/ORD-14/07
Office
RRD

24 Jan 2014

Policy and Guidance

Self-Adaptive Scheduling Algorithm - Guidance

Subject Continuous Welded Rail, Rail and Infrastructure Integrity

Keywords: Self-Adaptive Scheduling Algorithm

1 May 1999

Technical Reports

Test and Evaluation of Rail Flaw Detection Technologies

Author
Greg A. Garcia, Richard P. Reiff

Subject Rail and Infrastructure Integrity

Keywords: Nondestructive Inspection, Laser Ultrasonics, Remote Field and Low Frequency Eddy Current Testing, Electromagnetic Acoustic Transducer, Flaw Growth Rate

Abstract:

Internal flaws in rail occur as a consequence of the accumulation of fatigue under repeated loading. Inspection of the rail to detect flaws before they progress to complete...

Report Number
R-934
Office
RRD