In the last 20 years the industry has improved predictive maintenance processes and the tools used to perform it. In particular, vibration analysis technology has evolved to unimaginable levels.
What is vibration analysis? And more importantly, what do you need to know to start learning about it? Well, I invite you to read this article to explore it with me.
- Dr. Thierry Erbessd
- Erbessd Instruments
In the Part 2 the practical example will be analyzed.
Let’s look the background and calculate the most common frequencies produced by motor that potentially will be required for further analysis.
- Pawel Lecinski
Stator Inter-Turn Stress with Electrical Signature Analysis in Variable Frequency Drive Applications
Incorrect settings in a Variable Frequency Drive (VFD) application have an impact on the windings of an electric motor. When a drive is not set correctly, or not tuned when not using straight volts/hertz settings, stresses occur between the turns in a winding. In some cases, this will appear as small Partial Discharges (PD), and in others it can be increased leakage between turns. When these conditions occur, they introduce small current discharges that effect the air gap magnetic field of the motor.
- Howard Penrose
- MotorDoc LLC
What is a thermal image?
Thermal images are created by converting thermal radiation into a visible light image that we as humans can interpret. One important point to remember about thermal imaging is that it is a non-contact measurement of radiated energy in a very narrow wavelength band.
- PJ Cloete
- AVT Reliability
AVT Reliability® has been involved in resolving a wide range of high operational vibration issues with plant and machinery and including pipework vibration. This has led AVT Reliability® to design and develop a comprehensive range of versatile vibration solutions.
- AVT Reliability
Variable frequency drives (VFDs) have become a preferred method of process control for electric motor driven equipment ranging from vertical water pumps to centrifugal air fans. The following is a basic discussion of risks of using a VFD with direct driven centrifugal fans and methods of mitigating those risks to maintain equipment reliability.
- David Sheffler
- IVC Technologies
As predictive maintenance teams in industrial facilities strive for a more complete picture of their equipment’s health, high frequency vibration measurements have become a crucial addition to identify faults such as motor and pump bearing defects and gear tooth inconsistencies in high-speed gearboxes. As a result, there is an upsurge in demand for vibration sensors with a high frequency response.
- Meredith Christman
- PCB Piezotronics