Vibration 2 Course Outline:
Day 1
Introduction
The most common vibration sources
Program philosophy
Review
Vibration Basics
Using history in analysis
Analyzing amplitudes
Analyzing frequency
Analyzing phase
Basic separation of imbalance and misalignment
Understanding vectors
Instrument setup parameters
Low frequency cutoff
FFT Windowing
Sampling rate / fmax
Resolution
Averaging
Transducer mounting techniques
Spectral analysis overview
Terminology
What occurs at frequencies less than 1 times RPM
What occurs at 1 times RPM
What occurs at frequencies above 1 times RPM, lower range
What occurs at higher frequencies
The mental approach to analysis
Further detail on separating Imbalance from Misalignment
Understanding the effects of truncation, modulation and beats
Spectral result of a truncated waveform
Modulation and sidebands
Effect of beats on amplitude and phase
Synchronous time averaging
Day 2
The financial impact of an effective vibration program
Justifying the program
Looseness and Rubs
Analysis of Motors
Separating electrical hum from other sources
Rotor bar problems
Bearing Vibration
Rolling element bearings
Four stages of bearing failure
Oil whirl in sleeve bearings
Gear Vibration
Causes of gear mesh vibration
Cracked teeth
Orbiting gears
Frequency analysis exercises
Day 3
Analysis of Pumps
Cavitation
Recirculation
Turbulence
Belt Driven Machine Vibration
Analysis
Prevention
Frequency analysis and simulator exercises
Resonance
Large vibration at 1 location
Speed sensitivity
Bump test
Cracking
Curling
Phase change
10 division plot
Temporary bracing
Shaker test
Foot Related Resonance
Day 4
Resonance
Case histories and hands on
Detuning the resonance verses eliminating the source
Phase analysis
Methods of acquiring phase data
Conventions and relationships
Imbalance and misalignment patterns
Identifying a bent shaft
Operation deflection shape programs
The effect of resonance on phase
Case histories and exercises
Effective Report Writing
Preventing Misalignment
Obtaining accurate readings
Thermal growth
Day 5 (a.m.)
Preventing Imbalance Problems
Balance tolerances
Balancing narrow and overhung rotors
Assembly errors
Key length demo
The Precision Installation process / Starting a Machinery Improvement Program
Review course content
Day 5 (p.m.)
Certification testing (optional)