Vibration Analysis

Level 2

Intermediate

The VA Cat 2 may be suitable for those who either have: completed a VA Cat 1; a degree in Mechanical Engineering or; have significant vibration analysis experience, including an understanding of vibration theory and terminology. The course provides an in-depth study of machinery faults and their associated spectrum, time waveform and phase characteristics.

Course Outline

4.5 Days

9 Core Modules

Chapter 1 - Introduction

Data flow and process flowchart
Review of key concepts from CAT I

Chapter 2 - Vibration Theory

Basic motion (superposition)
Artificial high peaks
Transient vibration response
Beat
Time domain digitization
Frequency domain calculation
Relationship between waveform sampling rate and Fmax
Resolution
Time domain resolution
Frequency domain resolution
Units of amplitude
Characteristics of vibration
Amplitude conversion
Filtering
Filter applications
Aliasing
Phase
Phase relationship and units of measure
How do we measure phase?
Representing results from phase analysis
Windows

Chapter 3 - DSA Fundamentals

Analyzer types
Portable Digital Signal Analyzer (DSA)
Online vibration analysis
Vibration transducers
Displacement transducers
Velocity transducers
Accelerometer
Calibration
Triboelectric effect
Mounting
Data capturing recommendations
Frequency domain setup method
Frequency domain setup effects
Time domain setup effects
Setup decision tree

Chapter 4 - Site Survey

Planning a survey
Baseline
Routes
Acceptance testing

Chapter 5 - Shaft Centreline Introduction

Orbit
Centreline

Chapter 6 - Natural Frequency Intermediate

What are natural frequency, resonance, and critical speed?
Single degree of freedom (SDOF)
Multi degree of freedom (MDOF)
Resonance
Critical speed
Determining natural frequency
Mathematical methods
Bump test
Transient analysis
External excitation
Solving resonance
- Remove the excitation
- Change the natural frequency
- Application of damping
- Dynamic absorbers
- Isolation

Chapter 7 - Precision Maintenance

Alignment
Alignment equipment
Alignment procedure
Balancing
Rigid and flexible rotors
Methods
Standards and tolerances
Single plane balancing procedure
No phase balancing procedure
Reasons that a balancing attempt is unsuccessful

Chapter 8 - Reporting

Standards
Report components
Routine analysis reporting
Online reporting
Acceptance test reporting
Special investigations
Follow-up
Efficient analysis
Alarms

Chapter 9 - Equipment Knowledge

Motors (induction)
Pumps and fans (basic)
Gearboxes
Compressors
Structures and piping
Rolling and paper mills
High-speed rotors

Learning Outcome

Certification (Optional)

Snapshot

Introduction

Vibration Theory

DSA Fundamentals

Site Survey

Shaft Centreline Introduction

Natural Frequency Intermediate

Precision Maintenance

Reporting

Equipment Knowledge

Your Instructors

Chris Hill

CAT IV in Vibration Analysis/ Senior Analyst/ Trainer

Condition Monitoring Group

Chris is a highly experienced Senior Analyst with more than 25 years in condition monitoring. Certified to ISO CAT IV in vibration analysis since 2014, he brings extensive real-world expertise across walkaround and online systems.

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