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Why vibration elements? No matter how smart IIoT and predictive analytics get – no matter how good the tier 1 hand-held instruments get – people can benefit from the logic and thought processes behind the physics of vibration analysis and what conditions the technology can determine and detect. The Vibration Elements were created to provide both beginners and experienced analysts a logical, visual mapping system to understand vibration analysis as “systems thinking.”

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Vibration Diagnostic Framework

Contents

INTRODUCTION

SYNCHRONOUS FAULTS
Key Terms and Definitions
The Synchronous Grouping
Synchronous Faults: Unbalance
Synchronous Faults: Eccentricity
Synchronous Faults: Mechanical Looseness Type A
Synchronous Faults: Gear Tooth
Synchronous Faults: Overhung Rotor Unbalance
Synchronous Faults: Belt Drive Misalignment
Harmonic Faults: Radial Offset Misalignment
Harmonic Faults: Bent/Bowed Shaft or Rotor
Harmonic Faults: Angular Misalignment
Harmonic Faults: Cocked Bearing Inner Raceway
Harmonic Faults: Cocked Bearing Outer Raceway

HARMONIC FAULTS
Key Terms and Definitions
The Harmonic Grouping
Harmonic Faults: Radial Offset Misalignment
Harmonic Faults: Bent/Bowed Shaft or Rotor
Harmonic Faults: Angular Misalignment
Harmonic Faults: Cocked Bearing Inner Raceway
Harmonic Faults: Cocked Bearing Outer Raceway
Harmonic Faults: Gear Meshing
Harmonic Faults: Blade Passing
Harmonic Faults: Rotor Bar Passing
Harmonic Faults: Mechanical Looseness Type B
Harmonic Faults: Mechanical Looseness Type C

SUBSYNCHRONOUS FAULTS
Key Terms and Definitions
The Subsynchronous Grouping
Harmonic Faults: Mechanical Looseness Type B
Harmonic Faults: Mechanical Looseness Type C
Subsynchronous Faults: Rotor/Stator Rub
Subsynchronous Faults: Gear Assembly Phase
Subsynchronous Faults: Gear Hunting Tooth
Subsynchronous Faults: Oil Whirl Instability
Subsynchronous Faults: Belt Frequency
Subsynchronous Faults: Pole Passing Frequency
Subsynchronous Faults: Oil Whip Instability
Subsynchronous Faults: Turbulent Flow Instability
Subsynchronous Faults: Cavitation Flow Instability
Subsynchronous Faults: Bearing Cage Faults

NONSYNCHRONOUS FAULTS
Key Terms and Definitions
The Nonsynchronous Grouping
Nonsynchronous Faults: Oil Whirl Instability
Nonsynchronous Faults: Belt Frequency
Nonsynchronous Faults: Motor Pole Passing Frequency
Nonsynchronous Faults: Oil Whip Instability
Nonsynchronous Faults: Turbulent Flow Instability
Nonsynchronous Faults: Cavitation Flow Instability
Nonsynchronous Faults: Rolling Element Bearing Cage Frequency
Nonsynchronous Faults: Rolling Element Bearing Outer Raceway
Nonsynchronous Faults: Natural Frequency Faults
Nonsynchronous Faults: Electrical Line Frequency
Nonsynchronous Faults: DC Motor Electrical Faults
Nonsynchronous Faults: Rolling Element Bearing Element Spin
Nonsynchronous Faults: Rolling Element Bearing Inner Raceway

MODULATION FAULTS
Key Terms and Definitions
The Modulation Grouping
Modulation Faults: Rolling Element Bearing Element Spin
Modulation Faults: Rolling Element Bearing Inner Raceway
Modulation Faults: Bearing Cage Faults
Modulation Faults: Roll Barring
Modulation Faults: Bearing Natural Frequency
Modulation Faults: Rotor Bar Frequency Passing
Modulation Faults: Pole Passing Frequency
Modulation Faults: Fluting
Subsynchronous Faults: Gear Hunting Tooth

ACKNOWLEDGEMENTS

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