Vibo-Rama 2010 - Presentation Abstracts
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A Review of Wear and Wear Mechanisms - by Dr. Robert Gresham
As engineers and scientists, we spend an enormous amount of time trying to control wear and mitigate its effect. In spite of this, uncontrolled friction and wear accounts for an estimated one-third of all device-produced energy loss. These losses conservatively cost the nation over $200 billion. It is necessary to understand the nature of wear, recognize its types, the conditions that promote wear and the conditions the minimize it. This presentation will help you do this.
Vibration Problems Solved by Operating Deflection Shapes - by Bill Marscher
This presentation will provide a primer to a
powerful means to determine the root cause of many machinery vibration issues. Modal Analysis and Operating Deflection
Shape (ODS) testing are typically used to investigate natural frequencies of
machinery and supporting structures.
Modal analysis measures the natural frequencies, mode shapes and damping
of structural natural frequencies. Where
vibration analysis only measures the response of the machine or structure to
unknown forces, modal analysis can be used to determine these dynamic forces. A high percentage of machinery and
structural vibration problems are caused by natural frequencies excited to
resonate by rotating machinery. An analysis of a problem may include performing
an ODS prior to a modal test.
CPD/SED Spectrum to Monitor Bearing
Condition - Roland Kewitsch
Rolling Element
Bearings are one of the most important components in all rotating machines.
Bearing manufacturers provide information on anticipated service life under
“ideal” operating condition. In “reality” the service
life is affected by several operating and environmental condition. Therefore it is essential for the operation
and maintenance of rotating machines to gather the condition information of
REB’s. Among numerous
inspection methods, vibration monitoring is one of the most powerful and widely
used tools. This presentation
describes well proven methods for the monitoring and diagnostics of
REB’s: “CPB – spectrum” and “Envelope – spectrum”.
The History of Spectrum Analyzers – Joe Deery
From racks of
filters, rats’ nests of cables and van-loads of recorders and paraphernalia
to laptops and handheld multichannel units, the Spectrum Analyzer has come a
long way! As user, developer, and
seller of vibration assessment equipment, Joe has a career’s worth of
insider experience and knowledge. This
presentation will take a look back at some of the noteworthy advances in size
and capability over the years, some false starts along the way, and a look ahead
to what the future may hold.
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