Basic Machinery Vibration

Code : M/42

Why Attend This Training Course?

Vibration analysis of industrial machinery has been around for many decades. Vibration Analysis refers to the process of measuring the vibration levels and frequencies of industrial machinery, and using that information to determine the “health” of the machine, and its components. This course helps professionals to understand vibration principles, perform basic machinery vibration analysis on industrial machinery using measurements, according to established and recognized procedures setup plant vibration data collection. The course also includes several practical sessions as well as the review of case studies.

What Is The Training Course Methodology?

This training methodology illustrates the concepts involved in the above areas through practical consideration of actual real-life problems, as well as explanation of concepts by experts in area using video projectors and computer aided case studies based on practical applications. Participants will solve their system problem, where the trainee’s try to apply the skills learnt with guidance from our specialized experts. ACAD will provide participants a comprehensive assessment on the problems solved using the skills acquired in the training course.

Who Should Attend This Training Course?

  This training course is designed for Mechnaical Engineers, Supervisors, Technicians and Foremen in industrial installations.

What Is The Training Course Objectives?

Machinery distress very often manifests itself in vibration or a change in vibration pattern. Vibration analysis is therefore a powerful diagnostic tool, and troubleshooting of major process machinery would be unthinkable without modern vibration analysis.

What Is The Training Course Curriculum?

Vibration Fundamentals

  • Free response of single degree of freedom linear system
  • Free vibration of damped second order system
  • Forced response of single degree of freedom linear system
  • Response of first order systems to harmonic excitation, frequency response
  • Response of second order systems to harmonic excitation
  • Rotary unbalanced masses
  • Whirling of rotating shafts
  • Harmonic motion of the support

Vibration and Sound Measuring Interments and Calibration

  • Vibration pickups (velocity, accelerometer and non contact)
  • Vibration meter
  • Vibration analyzer
  • Selection of vibration pickup
  • Practical problems of transducer installation
  • Amplitude calibration
  • Accelerometers, shock and force calibration
  • Sensor practice
  • Mass spring seismic sensors (open loop and closed loop)
  • The peizo-electric sensors
  • Continuous monitoring and diagnostics

Data Acquisition and Interpretation

  • Vibration amplitude versus frequency analysis
  • Plotting amplitude versus frequency (x-y) signature
  • Linear versus logarithmic (db) display
  • Amplitude/phase versus machine rpm
  • Stroboscopic observations
  • Amplitude versus phase (Nyquist plots)
  • The waveform analysis
  • Examples of time waveform analysis

Phase Analysis

  • Measurements techniques
  • Stroboscopic light-phase meter and oscilloscope
  • Practical considerations for phase measurements

Data aAcquisition

  • Unbalance
  • Insufficient shrink fit
  • Misalignment
  • Torque lock
  • Bearing misalignment
  • Eccentricity
  • Looseness
  • Defective antifriction bearing
  • Defect belts
  • Oil whirl
  • Dry whirl
  • Resonance

Vibration Problems with Specific Machinery: Centrifugal Pump

  • Hydraulic forces, cavitation and recirculation
  • Fans and blowers
  • Aerodynamic forces and flow turbulence
  • Gear drives
  • Electrical problems
  • Rotor and stator related problems

Turbo machinery Problems

  • Internal friction whirl, aerodynamic cross coupling, surging and   choking (stone walling)
  • Shaft crack detection
  • Vibration of reciprocating machines

Problem Correction by Vibration Analysis

  • Unbalance
  • Single-phase vector method of balancing Sample problems
  • Dynamic unbalance
  • Two phase balancing
  • Misalignment
  • Resonance
  • Isolation
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