Recent trends in fault quantification in rotating machines

Over the decades, the vibration based condition monitoring is well accepted and widely used in practice for rotating machines to identify the faults. However the quantification of faults may requires number of experiments to be carried out which may be time consuming and exorbitant, if not impossible by experiments alone. The quantification of any faults using the mathematical model of machines is perhaps the best and straight forward approach. However, experience shows that the construction of a reliable mathematical model (often Finite Element (FE) model) of a complete machine is rather practically impossible to construct in most of the cases. Hence few alternate methods, using partial mathematical model of a machine, limited measured data and the optimization, have been suggested in recent years by researchers to overcome this limitation which are summarized here. © Krishtel eMaging Solutions Private Limited.