Here you will find a number of short presentations and videos about vibration analysis and condition monitoring topics. Please take a look, we know you find them beneficial. Please note: The presentations not hosted on YouTube will require Adobe Flash® player to be installed on your PC, and is not available on most mobile devices.
How do make sure that everyone is on the same page - all pulling in the same direction to achieve improved reliability success? With merely "pockets of knowledge" your reliability initiative won't be sustainable. This iLearnReliability presentation examines this topic, and provides suggestions to avoid this common pitfall.
Everyone contributes to unreliability, therefore everyone must be trained to improve your plant's reliability. This overview presentation describes how you can take meaningful steps toward sustainable reliability improvement by subscribing to iLearnReliability. Plant-wide training for everyone at your plant from top management, reliability and condition monitoring program managers, skills training for the craftsmen and plant-wide awareness for everyone on the plant floor.
Reliability Improvement is achievable and sustainable without the need to hire expensive consultants who benefit by your program's dependence on them. Jason Tranter describes the Roadmap to Reliability Improvement that can be realized without outside help. Learn more at http://www.MobiusInstitute.com/reliability.
In this 15 minute video, Jason Tranter talks about the
averging process that takes place in the FFT analyzer. This movie is
Part 1 of a two part series. The first part discusses the
problems associated with measuring a signal that changes in frequency
during the test - specifically for the case of a machine that may vary in
speed while you are measuring it. The second video deals with
averaging signals that are 'beating'.
In this 12 minute video, Jason Tranter discusses the
averaging process that takes place in an FFT analyzer. Averaging is used
to increase the time span of a data sample and to remove noise. What
happens if the signal we are monitoring is varying in time? What if the
amplitude of a particular frequency is going up and down in amplitude as
you measure it? The average will result in the average height of the peak
during the time span in which it was measured. The final data will not
however indicate that the peak was changing amplitude during the test.
What can we do to solve this problem? Watch this video and find out!
This 8 minute video by Jason Tranter gives you an overview
of the averaging process that occurs in the FFT analyzer. This video will
help you understand what averages are, why you take them and how
may you should take. Jason also describes where averaging occurs in
the data processing process. We think you will enjoy this video!
brief presentation, Jason Tranter uses 3-D animations to visually explain
what is meant by “cocked bearing”, how it can be detected utilizing
spectrum analysis, and how it can be confirmed using phase analysis.
In this short video, Jason Tranter describes the
relationship between the lines of resolution of an FFT spectrum and the
number of averages one should select. This presentation is especially
relevant today because of the increased capacity of modern digital data
collectors. This increase in capacity has resulted in a different data
collection strategy than existed a few years ago.
In this 5 minute video, Jason Tranter describes the four
basic types of filters one finds in a vibration data collector. Filtering
is an essential part of vibration data collection and processing, whether
you know it or not, the data you are collecting is being filtered in a
number of ways. It is therefore important to have a general grasp of what
filters are and what they are used for in order to assure that data of
interest to you is not filtered out of the signal.
In every FFT vibration data collector, the user has to
configure four important data collector settings. In this 9 minute video,
Jason Tranter will explain these four important settings and will offer
some guidelines in how to configure your data collector. The four settings
- Fmax - describes the maximum frequency being measured for this test
- Lines of resolution - describes how much resolution the vibration
spectrum will have (similar to the resolution of a digital photo)
- Averages - The data collector will take a number of readings and
average them. How many do we need?
- Units - displacement, velocity or acceleration. Which are you
measuring and which do you want to analyze?
In this short video, Jason Tranter discusses averaging and
the FFT analyzer and answers the question: "How many averages should
I take?" Averaging in the FFT analyzer is used to reduce noise and to
get a better idea of what is happening in your machine over a short period
of time. In general, more averages will give you a longer time window in
which to view what is going on in the machine, on the down side, it will
take more time to collect the data. If one takes no averages or not enough
averages, the data collection time may be too short to give you a good
picture of what is happening with the machine. So, how do you select the
correct amount of averages? Watch this video and find out!
In this short presentation, Jason Tranter explains the use
of proximity probes on fluid film bearings or journal bearings and the
graphical display typically associated with this application; the orbit
plot. When monitoring a fluid film bearing with proximity probes (also
called displacement probes) one measures the distance between the shaft
surface and the inner surface of the bearing. Utilizing two probes
oriented 90 degrees from each other, one can create a plot that describes
the motion of the shaft within the bearing. This is the orbit. We
hope you enjoy this 8 minute video!
presentation will provide an introduction to why we collect vibration
measurements and how we look at the spectra. If you have ever
wondered what the vibration tells you, this presentation will give you an
Is it possible that the vibration data you are analyzing is
trying to tell you something important but you are not seeing it because
you have the graphs scaled incorrectly? Is it possible that the failed
bearing did in fact give you plenty of forewarning that it was going to
fail but the bearing tones were hidden in the noise floor because you used
a linear graph scale? Has anyone told you that they prefer looking at
graphs using a linear scale because they have fewer peaks and are
easier to read? Although it may be true that they have fewer peaks is
it not also possible that the ones that are missing are actually the
important ones! Watch this video by Jason Tranter and you may find
yourself talking in decibels soon enough!
In this short video, Jason Tranter describes the concept of
overlap averaging in the FFT vibration analyzer. When collecting data with
a vibration data collector one typically uses averaging, which means that
a number of smples of vibration data are collected and averaged together
to provide a better view of what is happening in the machine being
monitored over a period of time. More averages may result in better
quality data, but it also takes more time to collect. Overlap averaging is
a way to make the averaging process more efficient such that one benefits
from having more averages but reduces the total amount of time required to
collect the data.
In this short presentation, Jason Tranter describes peak
hold averaging, what it is and how it works.
Peak hold averaging is not normally used for routine vibration
analysis, however it is a very useful took if you know that the vibration
will change during a test. The speed may change, the process may
change, you may perform a bump test, etc.
Peak hold averaging shows you how high the amplitude became at every
frequency during the test - as explained in this video.
OK, you have collected some vibration data and you have a
pile of spectral plots. How do you go about analyzing these? What is the
methodology or procedure to efficiently go through the data and detect
mechanical problems with your rotating machinery? Watch this video to find
This 26-slide presentation will provide an introduction to
time waveform analysis. It describes how to set up your data
collector correctly, how to analyze the waveform, and how to diagnose
specific fault conditions.
In this short video, Jason Tranter explains the concept of
spectral resolution. When collecting data with an FFT analyzer, the user
must select how many lines of resolution to take. It is similar to taking
a photo with a digital camera and telling the camera how many mega pixels
you want to take. The general issue with resolution is that higher
resolution data provides more information (a clearer picture) but it takes
longer to collect and more room to store. Lower resolution data may be
collected faster and takes less room to store, but you may not be getting
the information you expect in the spectrum. So how do you decide how much
resolution is enough? Watch the video and find out!