The ultimate goal of condition monitoring is to increase profitability by lowering maintenance costs and minimizing downtime. The goal can be achieved by making required changes to make sure that equipment is more reliable. The machines should be monitored every period of time to detect…
read moreIt is recommended to perform review of all the plant equipment before selecting the technology to monitor vibration and detect faults. There are issues that should be considered when selecting technology such as: • Equipment reliability requirement • The importance of the measurement process •…
read moreSpectral data is displayed in the frequency domain while waveform data is in the time domain. Spectral information is obtained by applying a Fourier transform to waveform data; this converts the data to show that amplitude and phase of the vibration at different frequencies. Both…
read moreVibration meters are handheld instruments which are connected to and receive a signal from a vibration transducer and have a capability to process data so as to give an indication of vibration parameters. They are sometimes made specifically to meet certain standard, for example, ISO…
read moreMisalignment can occur when the centerline of coupled shafts are not coincident. Misaligned shafts cause overloading and vibration in a system; this condition can be diagnosed by examining spectral data and looking for specific patterns. Two types of misalignment conditions are possible: • Parallel misalignment…
read moreCondition monitoring can be described as a process of monitoring machine condition, for example: vibration levels. Condition monitoring is a major part of predictive maintenance and is used to detect early vibration problems so that parts can be ordered and maintenance can be scheduled. Why…
read moreThe source of machine failure can begin from drawing board to poor maintenance practices and machine operating conditions. Every step of how the machine is fabricated, assembled, installed, and overhauled contributes to the life of the machine. To identify potential problems of machine failure, we…
read moreStructures are often exposed to high-energy vibration sources that can have disastrous consequences. Many industries are emphasizing lighter structures that use less material and cost less too, however this has a downside; lightweight structures have inherently lower damping characteristics and resonances can cause extremely high…
read moreGears come in different shapes, sizes and types depending on their intended use. Some of the common type of gears include: • Spur gears • Helical gears • Beveled gears • Worm gears • Planetary gears Spur gears are probably the simplest form of gears with straight…
read moreExcessive vibration in piping can cause destructive forces, large displacement or deformation which can result in serious damage or even catastrophic failure to the system. A piping system includes the pipework, pipe joint, welded seams, pipe hangers, flanges, and machinery connected to it. Piping vibration…
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