Vibration analysis explained, What is vibration analysis in maintenance? Vibration analysis definition
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Vibration analysis explained, What is vibration analysis in maintenance? Vibration analysis definition
Every rotating machinery generates some sort of vibration due to various defects like unbalance in the impeller, eccentricity in the impeller, misalignment between motor and pump, structural looseness, bearing defect… etc. Every defect (above mentioned) generates vibration at a unique frequency. Generally, the measured vibration signal of real-world equipment is complex, and it is in the time domain. i.e., Amplitude Vs Time as shown in the following figure.
To diagnose the source of the defect the real-world vibration signal has to be transformed to the frequency domain using the Fourier transform. The maximum amplitude corresponding to a particular frequency reveals the source of the defect as shown in the following figure.
The process of transforming the real-world vibration signal from the time domain to the frequency domain and troubleshooting the source of the defect is called vibration analysis.