Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Listening Technology for Wheelsets for Safer Trains

05.11.2012
With RailBAM, Siemens is providing an acoustic monitoring system that detects damage to the wheelset bearings in trains at an early stage.

This solution improves the reliability of rail transport and reduces maintenance costs. As reported in the current issue of Pictures of the Future, the system registers the running sounds of wheelset bearings in trains that are under way.



For more than two years, RailBAM has been monitoring 45 trains with a total of 9,000 wheelsets in Southampton, UK. Normally, wheelsets are replaced every 1.2 million kilometers. Because RailBAM can detect damage long before an actual failure occurs, technicians can now replace wheelsets whenever the measurement data shows the first changes.

As a result, it has been possible to extend the maintenance intervals for powered and non-powered wheelsets by ten and 50 percent, respectively. RailBAM was developed by Track IQ, a Siemens partner, and is marketed exclusively by Siemens.

Wheelsets experience more operational stress than any other train component. Wind and weather, high speeds and vibration make them susceptible to wear and contamination from dirt. At the same time, damage to a wheelset is a serious risk to safety, because if a wheel fails it is likely that the train will derail. Wheelsets are therefore regularly subject to visual inspection and ultrasound examination and after a set number of kilometers they are replaced.

RailBAM now makes it possible to regularly monitor the wheelset bearings of trains in service. The system is based on an acoustic sensor that is mounted along the rails and continuously records the running sounds of all trains. At the depot, measurement data is collected and assigned to a specific train based on the railroad's timetable. Software extracts the measurement values for the wheelsets from the acoustical data and compares them to reference values.

Early stages of damage to bearings cause characteristic changes in the running sounds of the wheels. If such alterations appear, the effected wheelset will be replaced the next time the train returns to a depot. In this way, sudden failure can be prevented. Conversely, a wheelset is allowed to remain in service beyond its normal maintenance interval, as long as the monitoring data doesn't show any problems that require attention.

At the moment, RailBAM can be used to monitor trains traveling at speeds up to a maximum of 160 kilometer per hour. However, due to the high level of interest from various rail operators, there are plans to adapt the system so that it can also operate with high-speed trains.

Dr. Norbert Aschenbrenner | Siemens InnovationNews
Further information:
http://www.siemens.com/innovationnews

More articles from Transportation and Logistics:

nachricht Tool helps cities to plan electric bus routes, and calculate the benefits
09.01.2017 | International Institute for Applied Systems Analysis (IIASA)

nachricht Realistic training for extreme flight conditions
28.12.2016 | Technical University of Munich (TUM)

All articles from Transportation and Logistics >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

How gut bacteria can make us ill

18.01.2017 | Life Sciences

On track to heal leukaemia

18.01.2017 | Health and Medicine

Water - as the underlying driver of the Earth’s carbon cycle

17.01.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>