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The Journal of Wheel/Rail Interaction
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Vehicle/Track

Managing Wheel/Rail Interaction on Rail Transit Systems

January 4, 2014 | Filed under: Rail Grinding, Rail Transit, Vehicle/Track, Wheel Maintenance, Wheel/Rail Interaction

By Bob Tuzik • January, 2008 All railways must deal with operating/engineering and vehicle/track interaction issues. But rail transit systems, which operate under the microscope of the urban environment, face special, often unique, challenges. Speakers at Rail Transit ’07, Advanced Rail Management and Interface Journal’s third seminar devoted to wheel/rail interaction on rail …

Effects of Secondary Suspension Imbalance on Wheel-Climb Derailment (Part 2 of 2)

January 4, 2014 | Filed under: Vehicle/Track

By Radovan Sarunac and Peter Klauser • October 2007 Part 1 of this article examined the effects of track geometry, wheel/rail profiles, friction, and wheel flange angle on wheel-climb derailment potential. Part 2 examines the effects of wheel unloading due to air spring imbalance on derailment potential. The secondary suspension of …

Tools and Techniques for Optimizing the Wheel/Rail Interface

January 4, 2014 | Filed under: Measurement Systems, Rail Grinding, Vehicle/Track, Wheel/Rail Interaction, Wheel/Rail Profile

By Gary P. Wolf • July, 2007 Much has been written and said about the need to optimize the interface between the wheel and rail, but with the growth of heavy axle load traffic, the mandate for optimum performance is greater than ever. Balancing the wheel/rail equation and optimizing interaction can …

Effects of Secondary Suspension Imbalance on Wheel-Climb Potential (Part 1 of 2)

January 4, 2014 | Filed under: Vehicle/Track

By Radovan Sarunac and Peter Klauser • July, 2007 Low-speed wheel-climb derailments are certainly not a new phenomenon. Investigations into the likely causes have long since identified the primary factors. Sometimes, however, old lessons need to be relearned.  While all aspects of wheel/rail interaction, which includes wheel/rail profiles, friction, track geometry, …

Tuning in to the Systems Approach

January 4, 2014 | Filed under: Vehicle/Track, Wheel/Rail Interaction

By Bob Tuzik • July, 2007 You’ve heard it before, you’ll hear it again. Delegates to the 13th Annual Wheel/Rail Interaction Seminar presented by Interface Journaland Advanced Rail Management heard it time and again over the course of the seminar: The wheel/rail interface is a system. And when there are problems, as …

Using Wayside Load Detectors for Preventive Vehicle Maintenance (Part 2 of 2)

January 4, 2014 | Filed under: Measurement Systems, Vehicle/Track, Wheel Maintenance

By B. McGuire, R. Sarunac, R. B. Wiley and P. Klauser • April, 2007 Part 1 of this article examined ways in which the use of vehicle performance detectors is steadily growing on North American freight and high-speed passenger railways. With the installation of a Wayside Wheel/Rail Load Detector on …

Using Wayside Load Detectors for Preventive Vehicle Maintenance (Part 1 of 2)

January 4, 2014 | Filed under: Measurement Systems, Vehicle/Track, Wheel Maintenance

By B. McGuire, R. Sarunac, R. B. Wiley and P. Klauser • April, 2007 The use of vehicle performance detectors is steadily growing on North American freight and high-speed passenger railways. With the installation of a Wayside Wheel/Rail Load Detector (WRLD) on the Washington Metropolitan Area Transit Authority (WMATA), the trend …

New AAR Maintenance Rules for Freight Car Trucks

January 4, 2014 | Filed under: Heavy Haul, Vehicle/Track

By Gary Wolf • January, 2007 The Association of American Railroads (AAR) has promulgated a new Rule 46 in the Field Manual of the AAR Interchange Rules. This new rule represents a comprehensive effort to codify under one umbrella many of the formerly fragmented rules dealing with truck wear limits, maintenance …

Introducing Low-Floor Vehicles into Older Transit Systems

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

By Roy E. Smith • March, 2006 The introduction of new, low-floor vehicles into existing North American transit systems has provided an attractive means of meeting current operating requirements. By the same token, their introduction has created a number of vehicle/track compatibility issues—particularly when these modern cars are introduced into older …

Testing Railway Vehicles to Improve Vehicle/Track Interaction

January 3, 2014 | Filed under: Vehicle/Track

By Robert Masar • March, 2006 Significant increases in high-speed international traffic throughout Europe have led European railways to establish new comprehensive technical rules to ensure acceptable parameters for vehicle/track interaction. Current measuring systems and data collection and processing capabilities have made it possible to test and homologate new railway vehicles …

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