ISO Category I Vibration Analyst - Basic

The Mobius Institute Category I course is the ideal starting place for new vibration analysts, people collecting vibration data, and those who want a better understanding of vibration analysis and condition monitoring.

If you are ready to get started in vibration analysis and condition monitoring, this course is for you.

You will come away with a solid understanding of why we monitor the condition of rotating machinery (and other critical assets), the importance of improved reliability, and how vibration can be successfully measured and analyzed to provide an early warning of a wide range of fault conditions.

You will come away from the course with a solid understanding of:

The benefits of performing condition monitoring and improving reliability
The condition monitoring technologies: acoustic emission, infrared analysis (thermography), oil analysis, wear particle analysis, motor testing
How machines work – via supplementary self-study using the “Equipment Knowledge” section
How vibration measurements can tell you about the condition of the machine
How to collect good, repeatable measurements
What the Fmax, resolution, averaging and other analyzer settings mean
How to analyze vibration spectra, and the basics of fault diagnosis: unbalance, misalignment, looseness, rolling element bearings faults, resonance, and other conditions
An introduction to setting alarm limits

Condition monitoring

Acoustic emission (ultrasound):

What is acoustic emission?
What can it tell you about rotating machinery?
How to you detect leaks and electrical faults?
How can it be used to detect bearing faults?

Thermography

What is thermography?
How can it be used to detect faults in mechanical and electrical equipment?
What is emissivity, and how does it affect the accuracy of the measurements?
What are the key qualities of thermal imaging cameras?

Oil analysis

How can it be used to check if the machine has a fault condition,
How can you test if the lubricant is “fit for purpose”?
What do viscosity, cleanliness, particle count, and other tests tell you?

Wear particle analysis:

How are the tests performed?
How can you learn about the nature of wear?
How can you determine which components are wearing?
How does it differ from conventional oil analysis?

Motor testing

What are the most common types of faults?
What can motor current analysis tell you?
What other test types tell you about the condition of the rotor, stator, and insulation?

Vibration analysis

Quick introduction to vibration analysis
Spectrum versus overall level readings
Walk-around versus on-line monitoring versus protection systems

Principles of Vibration

Introduction to vibration measurement

A quick introduction to the accelerometer and displacement probes
A quick introduction to the vibration waveform (via live displays)

An introduction to the time waveform

What is the time waveform?
How does it change with higher and lower frequency
What is frequency and period?
How does it change with amplitude
What are rms, peak and peak-peak?
What happens when the vibration includes multiple frequencies and amplitudes?

An introduction to the spectrum

What is the spectrum, and what does “FFT” mean
How can a spectrum be used to separate each source of vibration into a graph that highlights the different frequencies of vibration

An introduction to forcing frequencies

Using units of orders instead of Hz or CPM.
Calculating forcing frequencies
Identifying shaft speed
Blade and vane passing frequencies, bearing frequencies, gear mesh frequencies, and more
Gear and belt driven machines (multiple shafts with different turning speeds)

Explaining the different vibration units

What is the difference between acceleration, velocity and displacement?
When would you use each type of unit?
How to convert between each type of unit?

A brief introduction to phase

What is phase (in-phase, out of phase, phase angle)?
Why is it important in vibration analysis?
How is it measured with a single-channel analyzer, two-channel analyzer, and strobe?

Data acquisition

How do we measure vibration?

The non-contact eddy current displacement probe
The velocity probe
The accelerometer

Where to place the sensor on the machine

Understanding axial, radial, vertical, and horizontal readings

Do you really need to measure in three axes?
What does one axis tell you that another will not?

A quick introduction to mounting the accelerometer and surface preparation

Comparing handheld probes, magnetic mounts, and quick connect mounts
The 3D animations will highlight the important differences
What do you do if you cannot access the desired measurement point?

Naming conventions

Where is position “1” on the machine?
What does “MNDE” mean?

What are “routes” and how do you create them?

Downloading, following, and uploading routes
Why should you record your field observations when you are in the field (and why should you listen to the vibration during data collection)?
Recognizing bad data (and deciding what you should do if you get bad data)

Vibration analysis

The spectrum analysis process

Four steps to success
The ISO standard

What is resonance – a quick introduction

How does it affect your machines and your measurements

Diagnosing common fault conditions

Unbalance
Misalignment
Looseness
Rolling element bearing wear
Common electric motor faults
Common pump, fan and compressor faults
Common belt drive and gearbox faults

Maintenance Practices

What is breakdown maintenance and when should it be employed?
What is preventive (calendar based) maintenance, and what are its major flaws?
What is predictive (condition based) maintenance, and what are its benefits?
What is proactive (reliability centered)

Setting alarm limits

The ISO standard for setting alarms

How to use them
Their limitations

Band alarms

How they can be used to warn you of changes in vibration level
How they can aid your analysis process
Their limitations

Envelope alarms

How they can be used to warn you of changes in vibration level
Their limitations

Signal processing

A quick tour of your analyzer

Fmax and lines of resolution (LOR)
The importance of selecting the correct Fmax and lines of resolution?

Spectral averaging

What does averaging do, and why is it important?

ISO Category I Vibration Analyst - Basic

The Mobius Institute Category I course is the ideal starting place for new vibration analysts, people collecting vibration data, and those who want a better understanding of vibration analysis and condition monitoring.

You will come away from the course with a solid understanding of:

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