vibration analysis

A one hour long Webinar On Demand by Ron Newman, PRUFTECHNIK, Canada

Unbalance has long been recognized as one of the leading causes of vibration in rotating machines. Under ideal conditions, field balancing is a correction method that is well understood and practiced, however under difficult conditions it can quickly become a major headache. Increasing our understanding of dynamic balancing, particularly in the area(s) of quality grades, recognizing the types of rotor unbalance, resonance vs. critical speed, rigid vs. flexible rotors, and the pre-balancing inspection, will go a long way in helping resolve that problem balancing job!

Learning Points:

1) A better comprehension of the ISO Balancing Quality Grades

2) An understanding of the importance of the pre-balancing inspection

3) Calculation(s) for effective Trial Weight selection

A one hour recorded webinar on demand by Mitch Stansloski, President of PIONEER ENGINEERING - LUDECA Inc Training Partner.

Missed vibration conditioning monitoring data can never be recovered. All too often either insufficient data is collected, or data is collected at an ineffective interval. Then when crucial trend information is needed, accurate analysis is difficult at best.

This presentation will discuss setting highly effective collection specifications, as well as determining the appropriate collection interval for several applications.

Watch this tutorial to learn:

1. How to set appropriate frequency ranges, averages, and resolution in order to avoid misdiagnosing malfunctions that could be very straightforward.

2. How to establish the appropriate collection interval which varies as a function of shaft turning speed, duty cycle, and load.

3. The new VIBXPERT II vibration analyzer and OMNITREND software will be used to present real case studies to demonstrate these concepts.

A two-part, 1.5 hour recorded webinar playback on demand by Jason Tranter, Managing Director of the Mobius Institute

There are times when the vibration spectrum does not provide conclusive evidence of the exact nature and severity of the fault condition. Faults like unbalance, misalignment, bent shaft, cocked bearing, eccentricity, looseness and resonance can all be confused.

This presentation will introduce the concept of phase, explain how to measure phase, and then demonstrate how it can be used to distinguish one fault condition from another.

1) How spectrum analysis alone may result in inaccurate diagnoses

2) How phase analysis can be used to improve the accuracy of your diagnoses

3) How to use single channel and two channel analyzers and strobes to measure phase

Click Here to View Part Two

A 50-minute web workshop presented by Rod Acklin, General Manager, Commtest, Inc,

Vibration Analysis can seem complicated and many programs can stall or stop completely. Getting the basics right can make a big difference between success and failure. Understanding what the technology can do and cannot do is vital when applying it to solve machinery problems.

Watch this webinar to learn:

1) What is a vibration signature?

2) What is a FFT?

3) What are amplitude units?