Condition monitoring of rolling stock using wheel/rail forces

Projekt:

JVTC

Sammanfattning:
Railway vehicles are efficient because of the low resistance in the contact zone
between wheel and rail. In order to remain efficient both train operators and infrastructure
owners need to keep rails, wheels and vehicles in acceptable condition. Wheel
wear affects the dynamic characteristics of vehicles and the dynamic force impact on
the rail.
The shape of the wheel profile affects the performance of railway vehicles in different
ways. Wheel condition has historically been managed by identifying and removing
wheels from service when they exceed an impact threshold. Condition monitoring of
railway vehicles is mainly performed using wheel impact load detectors and truck performance
detectors. These systems use either forces or stress on the rail to interpret
the condition.
This paper will show measurements taken at the research station outside Luleå in
northern Sweden. The station measures the wheel/rail forces, both lateral and vertical,
at the point of contact in a curve with 484 m radius at speeds up to 100 km/h. Data
are analyzed to show differences for various wheel positions and to determine the
robustness of the system.

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Författare: Mikael Palo ; Håkan Schunnesson ; Uday Kumar
Utgivare: International Conference on Condition Monitoring and Machinery Failure Prevention Technologies
Utgivningsdatum: 2012
Diarienummer: TRV 2011/58769
Antal sidor: 9
Språk: Engelska
Kontaktperson: Per Olof Larsson Kråik, UHjbs