| Vibration
Analysis
All
machinery has vibration. It is the job
of a Wade Dynamics Vibration Analyst to determine
what is within tolerance, and what is not acceptable.
We use the latest in vibration testing equipment
and software to determine the frequencies causing
a machine to vibrate. The
following is a list of problems that can be detected
through vibration analysis:
Fan/Spindle
Unbalance |
Rotor
Unbalance |
Misalignment |
Soft
Foot |
Deteriorating
Bearing
|
Worn
Belts |
Worn
Pulley |
Worn
Coupling |
Worn
Shaft |
Bent
Shaft
|
Cracked
Foundation |
Loose
Foundation Bolts
|
Oil
Whirl Instability
|
Blade/Vane
Pass Frequency |
Natural
Resonant Frequency |
Structural
Resonance |
All
of these problems can be measured through spectral
analysis at the machines bearings. A vibration
spectrum on any bearing will have several "spikes" that
are a result of the "thumps" that the vibration
sensors pick up. These
spikes may be associated with the different rotational
speeds of the machine and may occur as exact
multiples of the running speed of that piece
of equipment. The
problems listed above all occur at different
multiples of running speed.
It is the
job of a Wade Dynamics Vibration Analyst to
calculate the amplitude and frequency of these
spikes and to then determine what is over ISO
tolerances and what corrective action is required.
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