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DIRG

The Politecnico di Torino rolling bearing test rig dataset.

Description

Data aquired on the rolling bearing test rig of the Dynamic and Identification Research Group (DIRG), in the Department of Mechanical and Aerospace Engineering at Politecnico di Torino.

The test rig contains two accelerometers at the position A1 and A2 and the shaft with its three roller bearings B1-B2-B3. Faults of different size are introduced in B1 on the inner ring or the roller.

Two types of experiments are conducted on the test rig: - variable speed and load test: with a variation of the fault size, nominal speed of the shaft and nominal load. - endurance test: with the fault of type 4A with the nominal speed at 300 Hz and nominal load at 1800 N.

More details can be found in the original publication.

Original Dataset

  • Type of experiments: initiated faults and run-to-failure.
  • Date of acquisition: 2016
  • Format: Matlab
  • Channels: 6, for two accelerometers in the x-y-z axis
  • Split: 'Variable speed and load' test, 'Endurance' test
  • Sampling rate: 51200 Hz for Variable speed and load test and 102400 Hz for Endurance test
  • Recording duration: 10 seconds for Variable speed and load test and 8 seconds for Endurance test
  • Label: normal and faulty
  • Size: ~ 3Gb unzipped

Download

ftp://ftp.polito.it/people/DIRG_BearingData

Built Dataset

  • Split: ['variation', 'endurance'].

Features

  • 'signal': {'A1', 'A2'}
  • 'label': [Normal, Faulty, Unknown]
  • 'sampling_rate': dict, 51200 Hz for Variation test or 102400 Hz for Endurance test
  • 'metadata':
    • 'RotatingSpeed': Nominal speed of the shaft in Hz [100, 200, 300, 400, 500] for the variation test and 300 for the endurance test.
    • 'NominalLoadForce': Nominal load in N [0, 1000, 1400, 1800]
    • 'LoadForce': Real load in N
    • 'FaultComponent': {'Roller', 'InnerRing'}
    • 'FaultSize': [450, 250, 150, 0] um
    • 'OriginalSplit': {'Variation', 'Endurance'}
    • 'FileName': original file name,

Notes

  • Conversion: load is converted from mV to N using the sensitivity factor 0.499 mV/N
  • The endurance test was originally with the fault type 4A but in the processed data we marked its label as "unknown".

Tutorial