A test rig for the condition-based maintenance application on the traction chain of very high speed trains

The preventive maintenance of traction equipment for Very High Speed Trains (VHST) nowadays is becoming very expensive owing to the high complexity and quality of these components that require high reliability. An efficient maintenance approach like the Condition-Based Maintenance (CBM) should be implemented to reduce the costs. For this purpose, an experimental full-scale test rig for the CBM of VHST traction equipment has been designed to investigate in detail failures in the main mechanical components of system, i.e. motor, bearings and gearbox. The paper describes the main characteristics of this unique test rig, able to reproduce accurately the train operating conditions, including the relative movements of the motor, the gearbox and the wheel axle. Gearbox, bearing seats and motor are equipped by accelerometers, thermocouples, torque meter and other sensors in different positions. The testing results give important information about the most suitable sensor position and type to be installed for each component and show the effectiveness of the techniques used for the signal analysis in order to identify faults of the gearbox and motor bearings.

[1]  Stefano Bruni,et al.  Design of a Test-rig for Traction Equipment of Very High Speed Trains , 2010 .

[2]  Steven Chatterton,et al.  Diagnostics of Roller Bearings for the Traction System of Very High-Speed Trains , 2010 .

[3]  Jérôme Antoni.  The spectral kurtosis of nonstationary signals: Formalisation, some properties, and application , 2004, 2004 12th European Signal Processing Conference.

[4]  Robert B. Randall,et al.  Simulating gear and bearing interactions in the presence of faults. Part I. The combined gear bearing dynamic model and the simulation of localised bearing faults , 2008 .

[5]  K. Gopinath,et al.  Developmental studies on rolling contact fatigue test rig , 2008 .

[6]  Robert B. Randall,et al.  THE RELATIONSHIP BETWEEN SPECTRAL CORRELATION AND ENVELOPE ANALYSIS IN THE DIAGNOSTICS OF BEARING FAULTS AND OTHER CYCLOSTATIONARY MACHINE SIGNALS , 2001 .

[7]  E. Bechhoefer,et al.  Envelope bearing analysis: theory and practice , 2005, 2005 IEEE Aerospace Conference.

[8]  Robert J.K. Wood,et al.  Electrostatic wear monitoring of rolling element bearings , 2007 .

[9]  Wenyi Wang,et al.  EARLY DETECTION OF GEAR TOOTH CRACKING USING THE RESONANCE DEMODULATION TECHNIQUE , 2001 .

[10]  Minel J. Braun,et al.  Vibration Monitoring and Damage Quantification of Faulty Ball Bearings , 2005 .

[11]  M. Farid Golnaraghi,et al.  Assessment of Gear Damage Monitoring Techniques Using Vibration Measurements , 2001 .

[12]  Mustafa Sabuncu,et al.  Early Detection of Pitting Damage in Gears using Mean Frequency of Scalogram , 2008 .

[13]  Fulei Chu,et al.  Morphological undecimated wavelet decomposition for fault diagnostics of rolling element bearings , 2009 .

[14]  J.L.A. Ferreira,et al.  An investigation of rail bearing reliability under real conditions of use , 2003 .