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Vehicle/Track

WRI 2017 – Transit: System Optimization and Better Asset Management

July 3, 2017 | Filed under: Rail Transit, Vehicle Design, Vehicle/Track, Wheel/Rail Interaction, Wheel/Rail Profile

By Jeff Tuzik Optimization, modernization and asset management are critical to the efficient running of a rail transit system. While each program is beneficial in its own right, the importance of asset management has taken on new significance with the recent Federal Transit Administration’s (FTA) rule making on the State …

Modelling Success and Predicting Failure at the Wheel/Rail Interface

January 18, 2017 | Filed under: Heavy Haul, Rail Grinding, Rail Maintenance, Track Geometry, Vehicle/Track, Wheel/Rail Interaction

WRI 2016, Heavy Haul Part 2 See Part 1 By Jeff Tuzik   The worst time to explore the complexities of contact mechanics, lubrication, metallurgies, carbody behavior or other aspects of wheel/rail interaction is at a derailment site. But it’s often the most instructive. As George Fowler, Senior Investigator at …

WRI 2015 — Heavy Haul Part 2: A Proactive Approach to Asset Management

December 5, 2015 | Filed under: Friction Management, Heavy Haul, Maintenance, Measurement Systems, Vehicle/Track, Wheel/Rail Interaction, Wheel/Rail Profile

By Jeff Tuzik (See Part 1) The benefits of taking a proactive approach to wheel/rail interface management are well known. Year after year at Wheel Rail Interaction conferences, speakers have extolled the benefits of moving away from costly reactive maintenance strategies. The “firefighting” method of moving from one critical exception to …

WRI 2014 Transit: A Systems Approach to Wheel/Rail Interaction

June 29, 2014 | Filed under: Friction Management, Measurement Systems, Noise and Vibration, Rail Grinding, Rail Transit, Vehicle/Track, Wheel/Rail Interaction

by Jeff Tuzik   The 20th annual Wheel/Rail Interaction Conference drew a record number of attendees and speakers from around the world. They came to contribute to and draw from the growing body of knowledge on wheel/rail interaction. Since the conference began 20 years ago, the industry has come a …

Taking the Long View: 20 Years of Wheel/Rail Interaction (Part 2 of 2)

April 22, 2014 | Filed under: Friction Management, Gary Wolf, Heavy Haul, Measurement Systems, Rail Maintenance, Track Geometry, Vehicle/Track, Wheel/Rail Interaction

Part 2. Friction Management, Vehicle Suspension and Measurement Systems By Bob Tuzik, April 2014 Part 1 of this article explored advances in metallurgy, wheel/rail profile design and maintenance practices. Part 2 continues the theme, examining the technologies and techniques that have shaped our understanding of wheel/rail interaction. While the practice of …

Truck Warp: The Causes and Cures (Part 1 of 2)

January 29, 2014 | Filed under: Vehicle/Track

By Gary P. Wolf Whether you are primarily interested in the track or the vehicle side of the wheel/rail interface, the effects of “truck warp” should be of interest to you. This two-part article examines the impact of warp in the overall operating environment. Part 1 examines what truck warp …

Assessing the Effects of Coupler Force and Train Speed on Freight Car Curving Resistance

January 4, 2014 | Filed under: Gary Wolf, Vehicle/Track

By Matthew Dick, Gary Wolf and Jack Chislett • October, 2008 Reducing fuel costs and consumption are at the top of every railroad’s agenda. The drive to reduce fuel-related costs has launched an array of proposed techniques, modifications and new practices. Rail Sciences, Inc., simulated a number of potential fuel-saving options …

Wheel/Rail Interaction ’08: Data to Information (Part 1 of 2)

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

By Bob Tuzik • July, 2008 As research into wheel/rail interaction has evolved, the emphasis has moved toward implementation of available technology and conversion of data into information. Such was the case at Wheel/Rail Interaction ’08, the 14th annual seminar produced by Advanced Rail Management and sponsored by Progressive Railroading magazine. Railroaders, researchers …

Using High-Performance Mass-Spring Systems to Reduce Noise and Vibration in Track

January 4, 2014 | Filed under: Noise and Vibration, Rail Transit, Vehicle/Track

By Hans-Georg Wagner • July, 2008 The transmission of noise and vibration associated with the close proximity of rail lines to houses and office buildings has become a significant issue in metropolitan areas. The operators of rail transit systems have begun turning to measures that mitigate noise and vibration and the …

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 …

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