WRI 2014 Heavy Haul: Part 2 (See Part 1) by Jeff Tuzik Wheel/rail interaction impacts virtually every aspect of railroading, including operational safety and efficiency, the effectiveness of vehicle and track maintenance and maintenance planning. WRI affects the bottom line, too. When things go wrong, the culprit is often somewhere …
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 …
by Jeff Tuzik Raw data by itself doesn’t always help much. In fact, it can be a burden. Extracting actionable information from raw data is an issue that the railroad industry has grappled with for years. (See WRI 2008: Data to Information) And as measurement and monitoring technologies have advanced, …
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 …
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 …
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 …
by Brad Kerchof and Huimin Wu Railroad track people know that track degradation is a complex and constant problem. Because so many variables affect track strength, correcting problems when they arise, and correcting them effectively, is no easy task. Norfolk Southern’s Research and Tests Department recently concluded a series of tests …
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 …
By James R. Hornaday, Jr. In many ways, rail is the most important component in a railroad system. The economic value of installed rail is usually the most costly asset listed in any railroad’s financial accounts. The financial stability of a railroad is often determined by how well that installed …
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 …