Vibration Analysis
Case Studies and Stories
Detecting Vortex Rope in a Francis Turbine Operating at Partial Load
The dynamic behavior at part load has been a major problem for low head and medium head Francis turbines...
- Emre Orhon
- Pro-Plan Ltd. - Istanbul Turkey
Case Studies and Stories
Best Practice in Gearbox Monitoring
Vibration monitoring on gearboxes is not obvious. Brand new gearboxes do have vibrations. Therefor putting alarm detection based on overall vibration levels often leads to false alarms or missed fault detection...
- Jos Sas
- Allied Reliability Group
Five Minute Facts
Modern Vibration Analysis – Following Bearing Damage Progression to Failure Mode
The time frame on which the spectrum analysis is based is very short, catching only the exact moment when one rolling element passes the specific position...
- Ron Kittle
- SPM Instrument Inc
Articles
The Ideal Vibration Analyst
The condition monitoring technologies, vibration analysis, in particular, are challenging to master. That is an understatement. Focusing on vibration analysis, it is a sad fact that “anyone” can set up a program, take readings, view spectra, and say that they are running a vibration monitoring program...
- Jason Tranter
- Mobius Institute
Case Studies and Stories
A Hoist Application in the Mining Industry
A hoist or winder is a mission critical application found in underground mines. The hoist is used either to transport ore to the surface or personnel to or from the mine shaft. There are three types of hoists...
- Tim Sundstrom
- SPM Instrument
Articles
Vibration: A Very Broad Technology
Vibration technology has a lot of adjustability from a frequency analysis perspective. You can adjust your frequency coverage...
- Don Sanger
- IVC Technology
Two Minute Tips
My Spectrum Does Not Indicate Misalignment so My Machine is Aligned, Right?
If the spectrum (and phase readings) indicate misalignment, then the machine will be misaligned...
- Jason Tranter
- Mobius Institute
Five Minute Facts
How Do You Diagnose Unbalance?
Technically speaking, unbalance—some people say imbalance—exists when the mass center line and the geometric center line do not coincide. What does that mean and why is it important...
- Jason Tranter
- Mobius Institute
Two Minute Tips
One Technology Is Not Enough
There is no doubt that technologies such as vibration analysis, oil analysis, ultrasound and infrared are very powerful. They can tell you a great deal...
- Jason Tranter
- Mobius Institute
