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The Journal of Wheel/Rail Interaction
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Assessing the Findings of a Derailment Investigation: Was the Right Cause Found?

January 21, 2025 | Filed under: Derailment, Gary Wolf, Heavy Haul, Wheel/Rail Interaction, WRI Conference

by Jeff Tuzik The Great Dismal Swamp. An ominous name. And in June of 2019, it was the site of a Norfolk Southern derailment. At NS, all derailments are investigated to determine the cause(s) and to provide data that could help prevent future incidents. Brad Kerchof, formerly Director of Research …

A Culture of Change: How the Railroad Industry Can Embrace an Evolving World

December 30, 2024 | Filed under: Heavy Haul, WRI Conference

by Jeff Tuzik Corina Moore is an agent of change. A champion of embracing change, too. Her transformative tenure as Ontario Northland’s Chief Operating Officer (2010 – 2014) and President and CEO (2014 – 2022) saw the railway emerge from divestment, deep financial woes, and an uncertain future to a …

Rail Grinding and Milling: How They Work, Where They Work

December 10, 2024 | Filed under: Milling, Rail Grinding

by Jeff Tuzik Rail grinding is a well-established maintenance practice with multiple preventive and corrective applications. Rail milling is a more recent (introduced roughly 25 years ago) addition to the rail maintenance toolkit but although it’s use in North America has been limited thus far, it is widely used in …

Wheel/Rail Profile Optimization on Wiener Linien’s Vienna Underground line U6

December 6, 2024 | Filed under: Rail Transit, Wheel/Rail Interaction, Wheel/Rail Profile, WRI Conference

by Jeff Tuzik One of the surest and most common signs that something is amiss at the wheel/rail interface is accelerated wear of the wheels, rail, or both. Occasionally the solution to the problem is straight-forward and site-specific. But more often, abnormal wear appears as a symptom of fundamental, systemic …

Vehicle/Track Interaction from a Car Design Perspective

November 3, 2024 | Filed under: Vehicle Design, Vehicle/Track, WRI Conference

by Jeff Tuzik Wheel/rail interaction doesn’t end at the wheel and rail. Sometimes it doesn’t even begin there. The lateral and vertical forces that affect the wheel/rail interface owe much to the design of cars and couplers — design choices that might seem ancillary to the subject, but are in …

Examining the Role of Wheel/Rail Interaction in a Unit Train Derailment

October 30, 2024 | Filed under: Derailment, Heavy Haul, Vehicle/Track, Wheel/Rail Interaction

by Jeff Tuzik Derailments happen. The minor ones cause damage and disruption; the big ones make the news. While there are derailments attributed to a single vehicle or track cause, often, the cause is the result of a combination of vehicle- and track-related contributing factors, underscoring that vehicle/track interaction is a …

Rail Corrugation: A Problem Solved?

October 15, 2024 | Filed under: Rail Grinding, Rail Maintenance, Wheel/Rail Profile

by Jeff Tuzik Rail corrugation is a common phenomenon. It’s found on both freight and transit lines around the world. The mechanisms behind corrugation are well understood, and there are many tools and techniques available to mitigate and remedy corrugation and its underlying causes. But this hasn’t always been the …

Friction Management: Implementation and State of Good Repair

August 20, 2024 | Filed under: Friction Management, Maintenance, Measurement Systems, Wheel/Rail Interaction

By Jeff Tuzik This article originally appeared in the July/August issue of Mass Transit. Friction management is a well-established technology in the rail transit industry. Its significance is such that it is considered one of the five pillars of wheel/rail interface management Davey Mitchell, Commercial Manager of Friction Modifier at …

Using Digital Twin Simulations of Automated In-Train & Vehicle/Track Dynamics to Reduce Derailment Risks

August 10, 2024 | Filed under: Big Data, Derailment, Vehicle/Track, WRI Conference

by Jeff Tuzik “Engineers predict things,” said Cory Hogan, Director of Vehicle Dynamics Studies at Ensco Rail Inc. As computing power and modelling have become more sophisticated, engineers have increasingly used digital-twins to model vehicle, track, and component behavior with incredible fidelity. Like engineers, digital twins can be great predictors. …

Mitigating Transverse Defects and Reducing Non-testable Areas: Grinding Strategies at CSX

August 6, 2024 | Filed under: Measurement Systems, Rail Grinding, Rail Maintenance, WRI Conference

By Jeff Tuzik Transverse defects are among the most costly and dangerous rail defects that freight railroads contend with. Across all Class 1 railroads, transverse defects are responsible for roughly 31 percent of broken rails system-wide; so mitigating the growth of transverse defects and detecting their presence via internal flaw …

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