06-16-2022, 02:03 PM
The time waveform can be transformed into an FFT spectrum or it can be trended as overall or frequency banded values. An additional technique that is being utilized extensively today is the High Frequency Enveloping (HFE) technique. It is very effective in identifying early stage bearing faults, installation and lubrication problems (and likewise can be used to track these problems all the way to potential failure). Unlike some condition monitoring techniques, the vibration monitoring technique is quantifiable allowing accurate trending of changing or deteriorating machine condition. The technique not only enables the vibration analyst to identify the source of the vibration (forcing frequency), but also its severity, thus allowing the maintenance personnel to undertake timely, corrective or remedial action, prior to severe or catastrophic failure. With more advanced vibration analysis techniques, computer animated models of the vibrating system can be developed to depict just how the system actually deflects or vibrates during actual operation.
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