Machinery VibrationMTM/PAVIB-E

Who should attend?

  • This course assesses the cause and evolution of mechanical failures by analysis of vibration signals.
  • It emphasizes the implementation of an efficient predictive maintenance program.
Audience :
  • Supervisors and technical staff involved in the technical inspection and maintenance of rotating equipment.

Level : Advanced

Course Content

  • BASIC DEFINITIONS - OVERALL MEASUREMENTS

      • Frequency and amplitude. Displacement, velocity, acceleration.
      • Different types of vibration: periodic, random, shocks.
      • Overall measurements: limitations, severity charts, high frequency techniques for anti-friction bearings, practical recommendations.
  • RESONANCE

      • Simple system behavior: amplitude and phase. Actual rotor and bearings systems. Critical speeds.
      • Using phase to study resonance. Identifying and solving problems.
  • TOOLS FOR DIAGNOSIS

      • FFT analyzers: Fourier transforms and actual plots. Accelerometers, fixation methods.
      • Selecting analysis parameters: scales, units, windows. Using special functions: zoom, cepstrum, envelope detection.
      • Using non-contacting probes for monitoring large machinery running on plain or tilt-pad bearings.
  • MACHINERY DEFECTS & VIBRATION SIGNATURE

      • Unbalance. Shaft and coupling misalignment.
      • Antifriction bearings - Typical defects.
      • Plain or tilt pad bearings instabilities.
      • Mechanical looseness, cracks, friction between rotor and static parts. Gear failures.
      • Electromagnetic defects of induction electric motors.
      • Drive belt vibration.
  • PRACTICAL MACHINERY VIBRATION MONITORING

      • Vibration control policy: machinery improvement program. Different policies according to the type of machinery and its criticality.
      • Developing an effective program.

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • explain the measurement devices: sensors, analyzers, software, etc.,
  • recognize standard signatures of the most common mechanical failures,
  • decide the kind of signal treatments to apply, in order to understand failure details and evaluate its severity,
  • implement a maintenance plan for each machine based on the criticality.

Ways & Means

  • Study of industrial cases.
  • Various illustrations of actual systems.
  • Use a professional measurement software and/or test benches.
  • The practical approach makes the course suitable for full-time vibration specialists.