Technical Reports

Wheel Failure Mechanisms of Railroad Cars: Volume II - Technical Task Summaries

This report summaries an extensive research program into the causes of wheel thermal failure. Results of material property tests, review of failure data, dynamometer tests, roll dynamics unit, track tests, and theoretical and experimental stress analysis show that heat-treated wheels of designs...

Inductive Interference in Rapid Transit Signaling Systems, Volume II: Suggested Test Procedures

Methods for detecting and quantifying the levels of inductive electromagnetic interference produced by solid state rapid transit propulsion equipment and for determining the susceptibility of signaling systems to these emissions are presented. These methods include procedures for taking...

Impact of Railroad Contracts on Corn, Wheat and Soybean Bids to Elevators and Farmers

This report presents the results of research conducted to determine the impact of destination and origin railroad contracts on grain bids to elevators and farmers. The impact of destination contracts on grain bid prices to elevators was estimated by comparing bid prices for rail delivered grain at...

High Performance, High Cube Covered Hopper Car Program, Transit America's HI CUBE 2000 Car Dynamic Performance Tests, Summary Report

As part of the co-operative Track-Train Dynamics High Performance, High Cube Covered Hopper Program, Transit America provided a prototype car - the HI CUBE 2000 for dynamic performance tests under the program's performance guidelines. This new design car was tested to evaluate its dynamic...

High Performance, High Cube Covered Hopper Car Program, Base Car Dynamic Performance Tests: Volume 4 - Summary

This report presents a summary of the dynamic performance tests of a 4750 cubic foot capacity high cube covered hopper car. All the tests were conducted at the Transportation Test Center in Pueblo, Colorado. Results of the reduction and analysis of test data for the rock-and-roll, pitch-and-...

Determinations of Dynamic Fracture Toughness Properties of Rail Steels

Motivated by the occurrence of a long-running rail web fracture in service, dynamic fracture mechanics research was undertaken to (1) quantify the crack driving force due to the residual stresses induced by roller straightening operations, (2) determine dynamic fracture toughness values for rail...

Classification of Hazardous Materials in Rail Transportation

The regulations pertaining to the classification of hazardous materials in rail transportation were examined for their robustness in identifying hazards, the classification of hazardous materials, and the utility of these classifications to those who must deal with rail accidents involving...

Ultrasonic Inspection of Railroad Rails by Electromagnetic Acoustic Transducers (EMATs)

EMATs offer unique characteristics that appear to be advantageous for inspection of railroad rails. These characteristics include the features that EMATs do not require a liquid couplant or physical contact with the object being tested, they can generate ultrasonic wave modes that cannot be...

Monitoring Devices for Railroad Emergency Response Team

This report examines new devices and technologies either commercially available or being developed which might have application to the railroad hazardous material spill response problem. Procedure and monitoring device information from Southern Railway, U.S. Coast Guard, Environmental Protection...

Inductive Interference in Rapid Transit Signaling Systems, Volume I: Theory and Background

This report analyzes the problem of inductive interference with audio-frequency signaling caused by chopper-controlled propulsion systems on rapid transit vehicles. After discussing audio-frequency track circuits, the report examines chopper interference generation as well as methods for observing...

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Technical Reports