By Bernhard Barkow and Paul Mittermayr • October, 2008 The interface between the wheel and rail represents the central link in railway dynamics. Imperfections, such as out-of-round wheels, have a significant effect on vehicle and track maintenance costs, and on safety and passenger comfort, as well (1). Much research has been …
By Edgar Fischmeister, Markus Ossberger, Roman Pongracz and Paul Mittermayr • January, 2008 Part 1 of this article can be seen here. Rail Grinding Traditionally, the rail head at Wiener Linien was ground as a five-sided polygon (see Figure 1). This approach has some negative impact on wheel wear, especially in …
By Edgar Fischmeister, Markus Ossberger, Roman Pongracz and Paul Mittermayr • October, 2007 Rail grinding and wheel re-profiling are essential elements of track and vehicle maintenance. These maintenance procedures have been shown to play a major role in the removal of surface defects or irregularities, and in controlling the shape and surface …
By Edgar Fischmeister, Markus Ossberger, Roman Pongracz and Paul Mittermayr • April, 2007 Measurement is an essential aspect of optimizing wheel/rail interaction on urban transit systems. After extensive research and development work, Wiener Linien, the Vienna (Austria) Urban Transit System, implemented an integrated wheel/rail measurement system that enabled the railway to closely monitor …