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The Journal of Wheel/Rail Interaction
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Vehicle/Track

Effects of Wide Gauge on Derailment Potential (Part 1 of 2)

January 3, 2014 | Filed under: Rail Maintenance, Track Geometry, Vehicle/Track

By Gary P. Wolf • December 1, 2004 “Wide gauge” is one of the most often used FRA derailment codes. In 2003, 254 derailments were reported to have been caused by wide gauge (FRA code T110 or T111). This represents nearly 13% of all derailments reported to the FRA, and roughly …

Designing Amtrak’s Wayside Train/Track Interaction Detection System

January 3, 2014 | Filed under: Measurement Systems, Rail Transit, Vehicle/Track

by Bob Tuzik, December 1, 2004 As part of its effort to monitor dynamic vehicle/track interaction on the Northeast Corridor, Amtrak commissioned ENSCO, Inc., to develop a Wayside Train/Track Interaction Detection System. The goal was to measure and collect information on vehicle/track forces that would enable Amtrak to determine the causes of …

Inspection and Analysis of Switch Derailments (Part 2 of 2)

January 2, 2014 | Filed under: Rail Maintenance, Vehicle/Track, Wheel Maintenance

By Gary Wolf Part 1 of this article examined trailing-point derailments, facing-point derailments and thin flange wheels. Part 2 examines wheel climb and frog-related derailments. Crosslevel variances in turnout geometry represent a common cause of wheel-climb derailments. It’s not unusual to find bolted or insulated joints within 30 to 40 …

Truck Warp: Causes and Cures (Part 2 of 2)

December 30, 2013 | Filed under: Vehicle/Track

By Gary P. Wolf • November 1, 2004 Part 1 of Truck Warp: Causes and Cures covered the three primary causes of truck warp: • An insufficient longitudinal steering moment is developed at the wheelset due to poor profile characteristics, typically, hollow-worn wheels. • An insufficient warp stiffness or moment …

Engineering the Wheel/Rail Interface for Rail Transit

October 18, 2013 | Filed under: Rail Transit, Track Geometry, Vehicle Design, Vehicle/Track, Wheel/Rail Interaction

By Jeff Tuzik • July 2010 Wheel/rail interaction is complex, variable and difficult to manage — especially on rail transit systems where noise, vibration and ride quality present daily challenges. As a result, managing the wheel/rail interface requires constant attention and innovation. Speakers at Advanced Rail Management’s Rail Transit 2010 …

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