| Vibration tests can be conducted using
electromechanical shakers or using computer-controlled experimental
modal analysis techniques. The picture to the right shows a student
impacting a four-blade propeller fan with a hammer instrumented with
a force transducer. Signals from the hammer and an accelerometer on
the fan blade are directed into a GenRad modal analysis system |
Student impacting fan blade of a
four-blade fan impeller during an
experimental modal analysis tests
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| to measure the resonance
frequencies and corresponding mode shapes of the fan impeller. Also,
available within CMEST is
an experimental modal analysis system that consists of a Data
Physics Acer two-channel FFT analyzer and the Star Modal modal
analysis software.
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| The picture to the right shows a student
measuring the vibration attenuation characteristics of an
anti-vibration glove. These gloves are used to protect the hands of
workers from high levels of vibration that are directed into their
hands from vibrating hand tools and vibration intensive work
applications. |
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 |
The picture to the left shows a student
measuring the vibration levels on the handle of a vertical grinder
during a typical grinding operation. |
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