Course Description: Advanced Vibration Analysis
This course is designed to assist participants to develop the skills required
to analyze complex vibration problems on a wide array of rotating machinery.
Students are exposed to the solution of many types of vibration problems through
the use of "case history" examples.
This 4-day course is designed to prepare individuals to analyze vibration
related problems on rotating machinery. Since most of these problems are
detected as a part of the predictive maintenance process, the course is
approached from that prospective. Topics include a brief review of the
fundamentals of vibration analysis and the procedures used to implement
predictive maintenance on rotating machinery. A series of lectures and
discussions, augmented with live demonstrations and problem solving sessions,
enable participants to grasp the key elements of the analysis process.
The steps necessary to properly evaluate the health of typical types of
machinery are covered in detail. These include the selection of:
- Measurement types (time waveform, FFT frequency spectrum, Bode’, etc.).
- Measurement units.
- Sensor type and sensor mounting.
- Measurement parameters (resolution, averages, data acquisition time).
Areas of special emphasis include:
- Advanced techniques for bearing damage assessment (PeakVue, Spike Energy,
HFD, crest factor, waveform peak, etc.).
- The use of phase measurements to assist in visualizing the vibration
characteristics of machinery, which improves the ability to diagnose more
difficult problems (operating deflection shape and mode shape analysis).
- The application of vibration standards. The General Motors Vibration
Standard is covered in detail, since this document can be used as a guide
for predictive maintenance and vibration analysis measurements. A copy of
the GM Standard is provided to each attendee.
- Resonance testing techniques for analyzing natural frequency related
vibration problems. Single & dual channel resonance testing procedures
are demonstrated. Experimental modal analysis using dual channel testing is
- Electric motor analysis using vibration and motor current signature
"Basic Vibration Analysis" (or equivalent) is a prerequisite for
Recommended for individuals with experience in vibration analysis wishing
to improve their diagnostic capabilities.
- Maintenance Philosophies: Implementation of Vibration Based
- Review of Vibration Basics
- Vibration Units
- Vibration Sensors
- FFT Frequency Spectrum
- Time Waveform
- Advanced FFT Spectrum Parameters
- Vibration Analysis of Anti-friction Bearings Using Advanced
Techniques (PeakVue, Spike Energy, HFD, Crest Factor, Waveform Peak
- Phase Angle as a Diagnostic Tool
- Phase Angle Measurements with Single & Dual Channel
- Operating Deflection Shape Analysis
- Mode Shape Analysis
- Natural Frequencies, Resonance, and
- Critical Speeds: Testing Procedures
- Diagnosis & Correction of Imbalance:
- Introduction to Calibration Weight Balance Procedures
- Detection of Misalignment Using Phase Angle
- Detection of Mechanical Looseness in Rotating Machinery
- Vibration Analysis of Common Gear Problems
- Motor Vibration and Motor Current Analysis
- Vibration Analysis of Centrifugal & Positive
- Vibration Limits & Acceptance Testing: GM & Other
- Introduction to Dual-Channel Vibration Analysis