Learning objectives/experiments

• introduction to vibration measuring methods on rotating machinery systems
  • fundamentals of measurement of shaft and bearing vibrations
  • basic variables and parameters
  • sensors and measuring devices
  • influences of speed and shaft layout
    ….

Learning objectives/experiments

• familiarisation with the terms “critical speed” and “resonance”
• influence of unbalanced excitation
• alignment of the elastic rotor
• influence of alignment errors
• understanding and interpreting frequency spectra
  ….

Learning objectives/experiments

• change in characteristic vibration behaviour (natural frequency, resonance speed, amplitude and phase of vibrations) due to a crack
• crack identification from the change in vibration spectrum
• detection of cracks in rotating shafts at the protruding shaft end
• understanding and interpreting frequency spectra
• use of a computerised vibration analyser
  ….

Learning objectives/experiments

• vibrational spectrum of the running noise of roller bearings
• familiarisation with the envelope analysis
• influence of damage to outer race, inner race or roller body, on the spectrum
• estimating service lives of roller bearings
• influence of the lubricant on the vibration spectrum
  ….

Learning objectives/experiments

• effects of alignment errors on different coupling types
  • pin coupling with offset
  • claw coupling with offset
• effects of production faults such as radial run-out axial run-out and pitch fault, on the running of the machine
  • flange coupling with no fault
    ….

Learning objectives/experiments

• influence of belt tension on vibration behaviour
• influence of speed on vibration behaviour
• influence of pulleys running untrue, and off-track running
• power split across multiple belt drive
• influence of slip on vibration running spectrum
  ….

Learning objectives/experiments

• identification of gear damage from vibration behaviour
• influence of gearing type
  • spur toothed
  • helical
• localisation of damage
  ….

Learning objectives/experiments

• experimental modal analysis of mechanical systems
• familiarisation with the envelope analysis
• influence of bearing clearance and shock impact
• inconsistent torque characteristic
• wear measurement on piston rods
  ….

Learning objectives/experiments

• observing and understanding cavitation in a centrifugal pump
  • visually
  • stroboscopically (stroboscope available as accessory)
  • by vibration analysis
• investigation of the operational vibrations of a centrifugal pump
  ….

Learning objectives/experiments

• vibration measurement on fans
• measurement of blade pass frequency
• identification of the vibration induced by the blades from the vibration spectrum
• effect of dynamic imbalance on the fan
• understanding and interpreting frequency spectra
  ….

Learning objectives/experiments

• influence of the gap on vibration behaviour
• influence of electromagnetic asymmetry on vibration behaviour
• influence of the load on the level of vibration
• influence of the gap on electromagnetic losses and efficiency
• influence of speed on vibration behaviour
  ….

Learning objectives/experiments

• within the context of the experiments in the complete PT 500 series, the following learning can be covered:
  • familiarisation with vibration signals
  • correct application of FFT analysis
  • measurement of speed, vibration displacement, vibration velocity and acceleration
  • assessment of the vibration state of a machine
    ….

Learning objectives/experiments

Learning objectives/experiments

• vibrational spectrum of the running noise of roller bearings
• familiarisation with the envelope analysis
• influence of damage to outer race, inner race or roller body, on the spectrum
• estimating service lives of roller bearings
• influence of the lubricant on the vibration spectrum
  ….