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Keywords: Ballast behavior, discrete element modeling, DEM, Discrete Element Method, triaxial test, fouling, dynamic train loading, ballast degradation and image analysis
Abstract: An innovative integrated computational-experimental laboratory testing framework has been developed at the University of Illinois at Urbana-Champaign to evaluate clean and fouled...
Keywords: Corrosion, rail, rail base corrosion, coatings, corrosion testing, premature rail failure
Abstract: In March 2014, EWI was engaged by the Federal Railroad Administration to research rail treatments to prevent rail base corrosion in corrosive environments. A coating system was...
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...
Evaluation of the Federal Railroad Administration’s Autonomous Track Geometry Measurement System Research and Development Program
Keywords: Evaluation, program review, needs assessment, funding, decision making
Abstract: This report evaluates the Autonomous Track Geometry Measurement System (ATGMS). It examines: 1) the extent of ATGMS usage, 2) what railroads think of ATGMS, 3) why ATGMS is not...
Keywords: Track inspection, inspection systems, inspection methodologies, optimal inspection, risk-based inspection, signal detection theory
Abstract: This report uses signal detection theory to quantify the sensitivity of two common track inspection systems (manual visual inspection via a hi-rail vehicle and automated track...