| Envelope
Analysis:
We
use envelope analysis together with other signal processing
techniques for the early detection of faults in rolling element
bearings, normally as part of an overall maintenance strategy. |
|
Envelope
processing shifts low amplitude high frequency harmonics of
bearing defect frequencies into a low frequency range and enhances
the components while suppressing the higher amplitude rotational
components such as gear mesh and blade pass frequencies together
with random broad band noise. |
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Actual
NDE Motor Bearing Envelope Spectra from Pump Sets ‘A’
and ‘B’ Showing ‘A’ with
High Carpet Level and Bearing Fault Frequencies and ‘B’
in Satisfactory Condition.
|
| Envelope
analysis is an invaluable diagnostic tool for monitoring rolling
element bearings. The technique has surpassed other methods
of detecting faults. |
