Nine Minutes of Knowledge
GMF Calculation and Gearbox Problems Detection
Gearbox defects can be identified with a quite high accuracy using vibration analysis. This is because the fact the most common defect frequencies are the fundamental Gear Mesh Frequency (GMF) and its harmonics (such 2x GMF, 3x GMF) which can easily detected.
- Pawel Lecinski
- CMRP
Analyzer Settings
Fmax, lines of resolution, averages, and units in the FFT analyzer. The video describes important settings in the vibration data collector and FFT vibration analyzer when signal processing to create the vibration spectrum
- Jason Tranter
- Mobius Institute
Averaging Overlap Percentage
In an FFT analyzer, overlap averaging is used to reduce noise in the vibration spectrum and speed up data collection process. This video discusses signal processing, averaging and the Fast Fourier Transform in the vibration data collector.
- Jason Tranter
- Mobius Institute
Bearing Problems – Fault Frequency and Artificial Intelligence-Based Methods
The early detection and fault analysis of bearing problems is crucial. When a rolling-element bearing develops flaws on the races and/or rolling elements, there are four vibration frequencies that can result...
- Pawel Lecinski
- CMRP
Low Speed Bearing Fault Detection
The definition of Low and Ultra low speed does not have a common description. Today we will define low and ultra low speed, and how to detect bearing faults with this speed..
- Tim Sundstrom
- SPM Instrument
Filters and the FFT analyzer
The FFT spectrum analyzer or digital data collector performs signal processing including filtering vibration signals. This short video gives an overview of low pass, high pass, band pass filters used in vibration analysis data collectors.
- Jason Tranter
- Mobius Institute
Resolution Limitations
Understanding lines of resolution in the FFT vibration spectrum. Signal processing in the FFT spectrum analyzer or vibration data collector, setting the number of lines of resolution, increase data collection time.
- Jason Tranter
- Mobius Institute
Infrared Thermography as a Diagnostic Tool for Roofing Systems
Thermography is typically used for condition assessment and forensic studies, as well as quality assurance inspections of new installations, repairs, and retrofits. Performed properly, thermography can provide valuable insights into the condition of a roofing system by graphically documenting the extent and location of subsurface moisture within a roof..
- Jim Seffrin
- Infraspection Institute
Nine Steps to Setting Up an Infrared Inspection Program
Infrared inspections are now a matter of routine for many commercial and industrial facilities. By proactively addressing incipient or latent failures detected during a single inspection, facility managers are able to avoid costs associated with unscheduled downtime and damage to electrical and mechanical equipment. Even greater savings can be achieved through...
- Jim Seffrin
- Infraspection Institute