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Measurement Systems

Automated Inspection and the Power of Data: A Panel Discussion from WRI 2014

January 27, 2015 | Filed under: Gary Wolf, Heavy Haul, Measurement Systems

by Jeff Tuzik It wasn’t so long ago that measurement technology referred to calipers, gauges, or other tools. And it wasn’t so long ago that the data railroads collected on their properties was measured in pages instead of gigabytes. Now, the data flows constantly. Automated measurement technologies, both vehicle- and …

Data to Decisions: Tools and Technology to Manage Wheel/Rail Interaction

September 15, 2014 | Filed under: Gary Wolf, Heavy Haul, Measurement Systems

WRI 2014 Heavy Haul: Part 1 by Jeff Tuzik A lot has changed since the early days of wheel/rail interface management. New technologies present new opportunities and challenges, while legacy systems are continually honed and adapted to new practices. Automated inspection technologies and data management are only the latest in …

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 …

Measuring With Eddy Current: Gauge Corner Cracking and the Magic Wear Rate

May 25, 2014 | Filed under: Measurement Systems, Rail Maintenance, Wheel/Rail Interaction

By Ryan McWilliams and Eric Eberius Gauge corner cracking (GCC) of the rail from rolling contact fatigue (RCF) is a dangerous and costly form of rail damage. Unfortunately, it’s also notoriously difficult to measure. And as GCC becomes more prevalent on rail systems around the world, accurate measurement is an …

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 …

Meeting the Industry’s Technology Goals

January 4, 2014 | Filed under: Friction Management, Measurement Systems, Wheel/Rail Interaction

by Bob Tuzik, January, 2008 The wheel/rail interface must be managed in order to increase the life of rail and rolling stock components and to reduce in-service failures. This was one of the primary messages delivered at the Association of American Railroads/Transportation Technology Center, Inc.’s 14th Annual Research Review. The research …

Rail Cant Measurement of Concrete Crossties (Part 2 of 2)

January 4, 2014 | Filed under: Measurement Systems, Rail Cant, Track Geometry

By Arthur Clouse Part 1 of this article examined the mechanisms that cause rail seat abrasion on concrete ties. Part 2 looks at existing standards for concrete ties and the systems that can be used to measure their performance. The Federal Track Safety Standards prescribe minimum track geometry and track structure requirements for specific track …

Rail Seat Abrasion: In-Track Repair

January 4, 2014 | Filed under: Measurement Systems, Rail Cant, Track Geometry

by Bob Tuzik, January, 2009 Rail seat abrasion on concrete ties has plagued railroads for nearly two decades, now. Abrasion ranging from less than 0.02 inches to more than 1 inch began appearing on curves on several of the major North American user railways in the early 1990s. The problem, which …

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

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

By Jeff Tuzik • October, 2008 Part 1 of this article examined efforts to optimize vehicle and track component performance through various testing, monitoring and simulation programs. Part 2 continues on the theme of “data to information,” further exploring such programs and the operational benefits they engender. Maintaining a Safe Neutral Temperature (SFT) on …

Rail Cant Measurement of Concrete Crossties (Part 1 of 2)

January 4, 2014 | Filed under: Measurement Systems, Rail Cant, Track Geometry

By Arthur Clouse • October, 2008 In response to accidents, unregulated causal factors and the National Transportation Safety Board’s recommendation (NTSB R-06-19), the Federal Railroad Administration (FRA) Office of Safety together with the Office of Research and Development initiated a study to identify and evaluate the safety of concrete crossties. …

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