Abstract
This paper experiments a vibration measurement on a twin-rotor connected by a Hooke’s joints. An experimental set-up for vibration analysis and unbalance fault detection in rotating machinery has been conducted to reveal the unbalance effect in signal transmission of the interconnected shaft through Hooke’s joint. Vibrations signals were measured and analysed using the Fast Fourier Transform (FFT), orbit patterns and time displacement of each rotor centre, to extract the signature of the unbalance fault. The results indicate the accuracy of the discussed approach for the twin-rotor unbalances diagnosis in an interconnected shafts system through a Hooke’s joint.
Highlights
Rotor balancing is required on all types of rotating machinery to ensure smooth machine operation [1]
Rotor balancing involves the whole rotor structure which consists of a large number of parts, including the shaft, discs, rotor-bearings and motor
This paper focuses on the influence of unbalance on a twin misaligned shaft using vibration characteristics based on an experimental setup
Summary
Rotor balancing is required on all types of rotating machinery to ensure smooth machine operation [1]. A perfectly balanced shaft is not easy to achieve, even under normal operating conditions. Unbalance system is inherent in all machines and is one of the main causes of vibration. It is caused by an unequal distribution of mass in a rotating shaft and distinguished by a sinusoidal vibration of once per revolution. The major challenge in the area of vibration condition monitoring is the extraction and identification of the features that are characteristic of a fault before it becomes critical. The entire rotating machinery needs to be monitored incessantly for the faults diagnostics
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