As a vibration analyst, your ability to detect the early signs of rolling element bearing defects and track them as the fault progresses is key to your success. Unexpected failures should never happen, and late warnings will not be appreciated by the maintenance or production departments.
- Jason Tranter
- Mobius Institute
Leaks can form practically anywhere in a plant. This includes pressurised systems and systems under a vacuum.While it is important to locate potential safety hazards from leaks, the loss of gases through leaks can be very costly.
- Adrian Messer
- UE Systems
Spectral bands can be a very useful tool for the detection of machine faults. However, not all condition monitoring analysts use them or take advantage of their full potential.
The need for reliably detecting reciprocating compressor cylinder leaks is important because this gives an indication of excessive wear or damage of a consumable component, such as the valves (which account for the majority of maintenance), piston rings and packing.
- Michael Hastings
- Brüel & Kjær Vibro (B&K Vibro)
In this presentation we will discuss how to use ESA/MCSA to detect bearing and gear defects in a variety of driven equipment including geared elevators, cooling towers, and other applications, even when we are looking at a few RPM. We will discuss how to determine the correct frequencies as well as how to determine the defect severity amplitudes in -dB, and how to isolate the machine you are testing from nearby machines. Several case studies will be presented including an AC building elevator, a cooling tower, and at least one complex (multi-stage) gearbox using both data collection and continuous monitoring.
- Howard Penrose
- MotorDoc LLC
A small number of semiconductor manufacturers have overcome the noise, bandwidth and g-Range shortcomings commonly associated with MEMS sensors used in Condition-based Monitoring (CbM) by producing several medium and high-performance MEMS vibration sensors with the latter being comparable to piezo accelerometers.
- Chris Murphy
- Analog Devices, Inc
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
Balancing cost reduction and efficiency improvement targets is a common source of frustration for maintenance and engineering managers. For facilities that operate continuously with no window for unplanned shutdowns, poor reliability and availability of machinery is far more serious, but even in factories with regular opportunities for maintenance, recovery can still be expensive and time consuming.
- AVT Reliability