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- W2886428688 abstract "The present work concentrates on the vibration based condition monitoring and fault diagnosis of centrifugal pumps. Two types of interrelated faults, i.e. flow blockages in the inlet pipe and impending bubble formation in the pump are considered. For the fault diagnosis and classification in the pump at varied speeds, a machine learning algorithm called, the Support Vector Machine (SVM) is utilized. Centrifugal pump is mounted on the Machine Fault Simulator (MFS™) set-up for the purpose of experimentation. Two tri-axial accelerometers, one on the pump casing and another on the bearing housing, are used to extract the vibration signals. Vibration signatures are taken at different flow blockages (0%, 16.7%, 33.3%, 50% and 66.6% of blockage) and at the start of bubble formation (inception of cavitation). Several statistical features are extracted from time domain vibration signal and fed to the SVM algorithm for training and testing. Standard deviation alone proves to be better than any other feature in this domain, and for this application. SVM parameters, including γ and C are optimally chosen. The ratio of training and testing data is also optimized. Binary fault classification offered better prediction accuracy for all blockage conditions over the multi-class fault classification. Moderately higher prediction accuracy in the multi-class fault classification (different level of blockages) has been found, when the training and the testing is done at higher rotational speeds. It has also been observed that the impending bubble formation could be very accurately predicted at higher rotational speeds." @default.
- W2886428688 created "2018-08-22" @default.
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- W2886428688 date "2018-12-01" @default.
- W2886428688 modified "2023-10-14" @default.
- W2886428688 title "Prediction of flow blockages and impending cavitation in centrifugal pumps using Support Vector Machine (SVM) algorithms based on vibration measurements" @default.
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- W2886428688 doi "https://doi.org/10.1016/j.measurement.2018.07.092" @default.
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