Body Of Knowledge

Vibration Institute Body of Knowledge

Subject:	Category
Subject:	I	II	III	IV
1. VIBRATION PRINCIPLES:	Cell	Cell	Cell	Cell
Basic motion	X	X	X	Cell
Period, frequency	X	X	X	Cell
Amplitude (Peak, peal-to-peak, RMS)	X	X	X	Cell
Parameters (Displacement, velocity, acceleration)	X	X	X	Cell
Units, unit conversions	X	X	X	Cell
Time and frequency domains	X	X	X	Cell
Vectors, modulation	Cell	Cell	X	X
Phase	Cell	X	X	X
Natural frequency, resonance, critical speeds	X	X	X	X
Force, response, damping, stiffness	Cell	Cell	X	X
Instabilities, non-linear systems	Cell	Cell	Cell	X

Subject:	Category
Subject:	I	II	III	IV
3. SIGNAL PROCESSING	Cell	Cell	Cell	Cell
RMS/peak detection	Cell	Cell	Cell	X
Analogue/digital conversion	Cell	Cell	Cell	X
Analogue recording and digital sampling	Cell	X	X	X
FFT computation	Cell	Cell	X	X
FFT application	X	X	Cell	Cell
Time windows (Uniform, Hanning, flat-top)	Cell	X	X	Cell
Filters (Low pass, high pass, band pass, tracking)	Cell	X	X	X
Anti-aliasing	Cell	X	X	X
Bandwidth, resolution	Cell	X	X	X
Noise reduction	Cell	X	X	X
Averaging (Linear, synchronous time, exponential)	Cell	X	X	X
Dynamic range	Cell	X	X	X
Signal to noise ratio	Cell	Cell	Cell	X
Spectral maps	Cell	Cell	X	X

Subject:	Category
Subject:	I	II	III	IV
5. FAULT ANALYSIS:	Cell	Cell	Cell	Cell
Spectrum analysis harmonics and sidebands	Cell	X	X	X
Time waveform analysis	Cell	X	X	X
Phase analysis	Cell	X	X	X
Transient analysis	Cell	Cell	X	X
Orbital analysis	Cell	Cell	X	X
Shaft center-line analysis	Cell	X	X	X
Enveloping	Cell	X	X	X
Mass unbalance	Cell	X	X	Cell
Misalignment	Cell	X	X	Cell
Mechanical looseness	Cell	X	X	Cell
Rubs, instabilities	Cell	Cell	X	X
Bearing defects (rolling element, journal)	Cell	X	X	Cell
Electric motor defects	Cell	X	X	X
Flow induced vibration, aerodynamics and liquids	Cell	Cell	X	X
Gearbox analysis	Cell	X	X	Cell
Resonance and critical speeds	Cell	X	X	X
Turbomachinery	Cell	Cell	X	X
General fault recognition	X	Cell	Cell	Cell

Subject:	Category
Subject:	I	II	III	IV
8. ACCEPTANCE TESTING:	Cell	Cell	Cell	Cell
Test procedures	Cell	X	X	X
Specifications and standards	Cell	X	X	X
Reporting	Cell	X	X	X

Subject:	Category
Subject:	I	II	III	IV
10. REFERENCE STANDARDS:	Cell	Cell	Cell	Cell
ISO	Cell	X	X	X
IEC	Cell	X	X	X
Relevant national standards	Cell	X	X	X

Subject:	Category
Subject:	I	II	III	IV
11. REPORTING AND DOCUMENTATION:	Cell	Cell	Cell	Cell
Conditioning monitoring reports	Cell	X	X	Cell
Vibration diagnostic report	Cell	X	X	X

Subject:	Category
Subject:	I	II	III	IV
13. ROTOR/BEARING DYNAMICS:	Cell	Cell	Cell	Cell
Rotor characteristics	Cell	Cell	Cell	X
Bearing characteristics	Cell	Cell	Cell	X
Rotor balancing	Cell	Cell	Cell	X

Subject:	Category
Subject:	I	II	III	IV
2. DATA ACQUISITION:	Cell	Cell	Cell	Cell
Instrumentation	X	X	X	X
Dynamic range, signal to noise ratio	Cell	Cell	X	X
Transducers	X	X	X	Cell
Sensor mounting, mounted natural frequency	X	X	X	Cell
Fmax acquisition time	Cell	X	X	Cell
Proximity sensor conventions	Cell	X	X	Cell
Triggering	Cell	X	X	Cell
Test planning	Cell	X	X	X
Test procedures	X	X	X	X
Data formats	Cell	X	X	Cell
Computer database upload/download	X	Cell	Cell	Cell
Recognition of poor data	X	X	X	Cell

Subject:	Category
Subject:	I	II	III	IV
4. CONDITION MONITORING:	Cell	Cell	Cell	Cell
Computer database set-up and maintenance	Cell	Cell	X	Cell
Equipment evaluation and prioritization	Cell	X	Cell	Cell
Monitoring program design	Cell	X	X	X
Alarm set-up (Narrowband, envelope)	Cell	Cell	X	Cell
Baseline assessments, trending	Cell	X	X	Cell
Route planning	Cell	X	X	Cell
Alternate technologies (e.g. oil analysis, wear debris analysis, infrared thermography, motor current analysis, acoustic emmission)	Cell	Cell	X	X
Fault condition recognition	X	X	Cell	Cell

Subject:	Category
Subject:	I	II	III	IV
6. CORRECTIVE ACTION:	Cell	Cell	Cell	Cell
Shaft alignment	Cell	X	X	Cell
Field balancing	Cell	X	X	X
Replacement of machine parts	Cell	Cell	X	Cell
Flow control	Cell	Cell	X	X
Isolation and damping	Cell	Cell	X	X
Resonance control	Cell	Cell	X	X
Basic maintenance action	X	X	X	Cell

Subject:	Category
Subject:	I	II	III	IV
7. EQUIPMENT KNOWLEDGE:	Cell	Cell	Cell	Cell
Electric motors, generators and drives	X	X	X	Cell
Pumps and fans	X	X	X	Cell
Steam turbines, gas turbines	Cell	X	X	Cell
Compressors	X	X	X	Cell
Recprocating machinery	Cell	X	X	Cell
Rolling mills, paper machines, other process equipment	X	X	X	Cell
Machine tools	X	X	X	Cell
Structures, piping	X	X	X	Cell
Gearboxes	X	X	X	Cell
Rolling element bearings	Cell	X	X	Cell
Journal bearings	Cell	X	X	Cell
Gearing	Cell	X	X	Cell
Couplings, belts	Cell	X	X	Cell

Subject:	Category
Subject:	I	II	III	IV
9. EQUIPMENT TESTING AND DIAGNOSTICS:	Cell	Cell	Cell	Cell
Impact testing	Cell	X	X	X
Forced response testing	Cell	X	X	X
Transient analysis	Cell	Cell	X	X
Transfer functions	Cell	Cell	X	X
Damping evaluation	Cell	Cell	X	X
Cross channel phase	Cell	Cell	X	X
Operating deflection shapes	Cell	Cell	X	X
Modal analysis	Cell	Cell	Cell	X
Torsional vibration	Cell	Cell	Cell	X

Subject:	Category
Subject:	I	II	III	IV
12. FAULT SEVERITY DETERMINATION:	Cell	Cell	Cell	Cell
Spectrum analysis	Cell	X	X	X
Time wavefore analysis, orbit analysis	Cell	X	X	X
Levels: overall, narrowband, component	Cell	X	X	Cell
Severity charts: graphs and formula	Cell	X	X	X