Vibration Monitoring Information
The sequence of events when interpreting AE measurements is the reverse of that with VA:
- AE: Alert > Trend > Diagnose only if required
- VA: Data process (FFT) > Diagnose all readings > Trend > Alert
a) Diagnostics requires the most expertise and effort
b) Most machinery spends most of its life in good condition
c) With AE, diagnostics is not always seen as a requirement
...the practical advantages of AE as a front line tool in your Condition Monitoring armoury becomes very clear.
|Comparison of the main machinery CM techniques|
|Sensor Position||Not Critical||Critical||Not Critical||Not Critical||Critical|
|Low Speed Sensitivity||High||Low||Low||High||High|
|Available from Parker Kittiwake|
|AE - Acoustic Emissions||Parker - Holroyd Technology|
|VA - Vibration Analysis|
|IRT - Infra Red Thermography|
|OA - Oil Analysis||Kittiwake Analex Technology|
WDA - Wear Degree Analysis
||Parker Kittiwake technology, built-in data processing and require low level of expertise for accurate data interpretation.|
- ISO 22096 - 'Condition monitoring and diagnostics of machines - Acoustic Emission'
- ISO 18436 - 'Condition monitoring and diagnostics of machines - Requirements for training & certification of personnel'
- Acoustic Emissions & Ultrasonics - Author: T Holroyd, ISBN 1-90189-207-7, published by Coxmoor Publishing, 2000
- Non-destructive Testing Handbook, 3rd Edition: Volume 6, Acoustic Emission Testing - Authors: Miller, Ronnie K. et al. ISBN 1-57117-106-1, published by ASNT, 2005