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52550
  
  

  29
Feb
2024
Annual Enforcement Report
Fiscal Year 2023 Annual Enforcement Report
Author
          Federal Railroad Administration

Subject
                    Enforcement
    12
Feb
2024
Research Results
Expansion of Rail Flaw Library at the Transportation Technology Center
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:** Rail, rail wear, rail defect, rail flaw library, ultrasonic testing, UT, phased array ultrasonic testing, PAUT, Miniprof, Rail Flaw Library of Associated Defects, RF-LOAD, non-destructive evaluation, NDE, track

Report Number
              RR 22-36

  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
Author
          Federal Railroad Administration

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
    13
Sep
2023
Technical Reports
High-Strength, Reduced-Modulus, High-Performance Concrete for Prestressed Concrete Crosstie Applications
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:** Concrete, crosstie, weathered aggregate, granite, modulus
**Abstract:** High-performance concrete (HPC) with early strength development is the material of choice for fabricating prestressed concrete railroad ties. However, the higher strength of...
Report Number
              : DOT/FRA/ORD-23/26

  Office
              RPD-21
    7
Sep
2023
Technical Reports
Characterization of Track Geometry for Various Operational Conditions
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:** Track geometry, track quality, track irregularities, space curve, Automated Track Inspection Program, ATIP, Power Spectral Density, PSD, clustering
**Abstract:** This report characterizes the amplitude and wavelength content of the current track geometry environment of the United States railroad system and examines the combination of...
Report Number
              DOT/FRA/ORD-23/25

  Office
              RDI-22

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