What is 'Vibration Analysis'?
Vibration analysis is a type of Condition Monitoring which is, in turn, a form of predictive maintenance. Using transducers with piezoelectric crystals, vibration signals are taken from the machine/s; these signals (which are in the form of many sinusoidal signal waves) are then converted into a spectrum using FFT (Fast-fourier transform, a type of mathematical algorithm). The signals then appear at specific frequencies relative the to the machine in question, showing potential failure where abnormal frequencies are being excited, and helping to discover what is causing this abnormality.
What are the benefits of 'Vibration Analysis'?
There are many benefits which may encourage you to adopt vibration analysis as part of your routine maintenance:
Reduce maintenance costs - Predictive maintenance reduces overall maintenance costs by identifying specific problems to machinery rather than replacing and/or repairing unnecessarily.
Reduced downtime - by regularly monitoring important assets to your process, vibration analysis can begin to predict when failures are likely to happen, and rather than waiting for something to happen. Action can be then taken in a shut-down to prevent further damage and/or stop unexpected downtime.
Identify root cause - has a particular machine always caused problems and it is unknown why these problems are occurring? Vibration analysis can help to identify the root cause of this problem and assist in eliminating the problem.
What faults can 'Vibration Analysis' detect?
The list of faults which vibration analysis can detect is very long, the three main categories it can detect are:
Mechanical failure - This is the largest category of faults which vibration analysis is used for. It includes faults such as imbalance, misalignment, bearing issues, shaft issues, gear issues, and many more...
Electrical failure - this includes problems such as stator shorting, cracked rotor bars, inverter damage, and so on. These faults are less common however can still be the cause of vibration on your machine.
Structural failure - This is faults such as poor machine mounting, poor foundations, badly modified dynamics and even missing machine feet. These faults can seem obvious at first but can easily be overlooked and mistaken for a different problem.
Why choose PFE Limited for your 'Vibration Analysis'?
We have an extensive knowledge and enthusiastic drive when it comes to our work, we will always go the extra mile to ensure our service is the best service we can possibly provide.
PFE offer tailor-made reporting for every client, every part of the report can be modified to suit your needs and/or requirements, we are proud of our in-depth analysis reports and we are sure you will be happy with our reporting standard.
With competitive pricing and an unrivalled quality of service, PFE Limited will meet your vibration analysis needs.
Types of 'Vibration Analysis' we offer and how we do it
There are a few different ways which vibration data can be taken, some more effective than others, however cost does play a large role in selecting the type of vibration analysis which you need:
Routine based vibration analysis - One of the most cost efficient choices, using a hand-held data collector, vibration data is taken on regular intervals (usually monthly however this is dependant on your criticality and need; however the more frequent the analysis, the more accurate the fault analysis is). This data is then uploaded to our server back in the office, and analysed for faults whilst a report is compiled, this report will consist of an overview graph for the year, showing a list of your assets being monitored and the current alarm level of each asset using a traffic light system. Those assets which are under Normal Operating Conditions do not require any further reporting, any assets in Warning or Alarm will have an additional exception report page included which identifies what the potential problem is, recommendations on how to improve or fix the fault, as well as data supporting the find. We will also highlight any visual issues with the machinery such as leaking ducts, pipework and empty oil-pots for your convenience.
One-off vibration analysis - if you do not have a routine analysis in place or possibly want a second opinion on the vibration of a machine, PFE Limited will conduct a one-off vibration analysis. This is reported in the same way routine-based analysis is however only for a one-time occurrence rather than across an entire year. One time vibration analysis data cannot identify as many faults accurately as routine-based but is still an effective form of fault identification.
Fixed (permanent) vibration analysis - With close ties to companies who supply fixed condition monitoring (Vibration analysis) systems, PFE can organise and see through the entire process of getting permanent analysis installed. Permanent systems usually feed to a nearby computer and will flag up various issues with machinery its monitoring, PFE Limited can provide a service in checking this data and making sure everything keeps running smoothly and that all faults are correctly being highlighted.