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22
Mar
2021
Research Results
Solid-State Welding of Signal Wire Attachment
Subject
Track
Keywords: Signal wire bonding, solid-state, welding, portable, PTC
Report Number
RR 21-02
Office
RDI-21
20
Nov
2020
Research Results
Timber Crosstie Spike Fastener Failure Investigation: Field Evaluation of an Alternative Fastener
Subject
Track
Keywords: Broken spikes, elastic fastening system, spiral washer, timber crossties, track
Report Number
RR 20-25
Office
RDI-21
4
Sep
2020
Research Results
Locating and Sizing Rail Head Defects for Rail Head Repair Welds Using Phased Array Ultrasonics
Subject
Track
Keywords: Phased array ultrasound, PAUT, transverse defect, TD, rail head repair, weld repair
Report Number
RR 20-16
Office
RDI-21
29
May
2020
Research Results
Investigating the Prominent Failure Mode of Cut Spikes Used in Elastic Fastening Systems
Subject
Track
Keywords: Elastic fastener, broken spike, spike failure mode, vertical rail force, lateral rail force, longitudinal rail force, wood tie, wood species, wood tie damage, finite element analysis
Abstract: Under the sponsorship of the Federal Railroad Administration, researchers conducted finite element (FE) analyses at the Volpe National Transportation Systems Center from April...
Report Number
RR 20-09
Office
RDI-21
26
May
2020
Technical Reports
Reference-Free Estimates of Railroad Bridge Displacement under Revenue Service Traffic
Subject
Track
Keywords: Railroad bridge safety, bridge performance monitoring, reference-free displacements estimation, campaign monitoring
Report Number
DOT/FRA/ORD-20/21
Office
RDI-21