Vibration Analysis
Case Studies and Stories
Rotor Bar Fault Maintenance Issue: Vibration Sensor Alert
A 398 KW MV motor that runs a blower fan in a cement plant was showing strange behavior. The vibration equipment indicated vibration amplitudes that became chronic with the passage of time. The maintenance team, not knowing what the issue was, ran the motor until the bearings had to be replaced...
- Mark Koch
- ALL-TEST Pro, LLC
Two Minute Tips
Good Decisions Require Good Information
Monitoring equipment requires an understanding of what you are looking for and matching sensing equipment to these signatures. Learn about how to best match sensing tools with the types of equipment you are monitoring and the vibration signals they generate as they age..
- Perfecto Martinez
- Arrow
Five Minute Facts
Resonance & Natural Frequency
Have you ever been trying to balance a fan and its vibration doesn't go down, no matter what you do? Do you know what resonance is?
- Dr. Thierry Erbessd
- Erbessd Instruments
Two Minute Tips
Designing a Wind Turbine: Dealing with Resonance
Whenever the natural frequency of a turbine tower meets the rotor or blade frequency, it oscillates. It has a resonance. How do we avoid it…
- Partha Ravi
- OnyxInsight Australia
10 Minute Talk
Averaging and the FFT
When collecting vibration data with an FFT analyzer, a linear averaging process is used to reduce noise in the vibration spectrum. This video discusses signal processing, averaging and the Fast Fourier Transform in the vibration data collector..
- Jason Tranter
- Mobius Institute
Two Minute Tips
Surface Morphology of Railroad Tracks
Surface morphology is a detailed study of a surface. We studied the surfaces of railroad tracks and found that using analytical imaging helps us see what we cannot see with our naked eyes…
- Ashish Arora
- Institute of Noise & Vibration
Case Studies and Stories
How We Diagnosed Our Cooling Water Pump Gearbox
This case study comes from a custom-made, four-story-high pump at Engro Fertilizers. In January 2014, we started noticing abnormal noise and vibration from the gearbox. But we couldn’t see anything apart from an increased gear mesh frequency…
- Haider Ali
- Engro Fertilizers
10 Minute Talk
Turbo Machinery 101
Salah Attia tells us about different types of turbines and the alarm levels that should be set to protect these critical machines…
- Salah Attia
- ALS Industrial
10 Minute Talk
When Vibration from Trains Damages Buildings
In large cities in India, such as Delhi, metros cause a lot of damage to buildings. Stories have appeared on the news of people who have to repair their houses again and again…
- Ashish Arora
- Institute of Noise & Vibration
