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• W2401351034 abstract "Vibration analysis for diagnosis of faults in rolling element bearings is complicated when the rotor speed is variable or slow. In the former case, the time interval between the fault-induced impact responses in the vibration signal are non-uniform and the signal strength is variable. In the latter case, the fault-induced impact response strength is weak and generally gets buried in the noise, i.e. noise dominates the signal. This article proposes a diagnosis scheme based on a combination of a few signal processing techniques. The proposed scheme initially represents the vibration signal in terms of uniformly resampled angular position of the rotor shaft by using the interpolated instantaneous angular position measurements. Thereafter, intrinsic mode functions (IMFs) are generated through empirical mode decomposition (EMD) of resampled vibration signal which is followed by thresholding of IMFs and signal reconstruction to de-noise the signal and envelope order tracking to diagnose the faults. Data for validating the proposed diagnosis scheme are initially generated from a multi-body simulation model of rolling element bearing which is developed using bond graph approach. This bond graph model includes the ball and cage dynamics, localized fault geometry, contact mechanics, rotor unbalance, and friction and slip effects. The diagnosis scheme is finally validated with experiments performed with the help of a machine fault simulator (MFS) system. Some fault scenarios which could not be experimentally recreated are then generated through simulations and analyzed through the developed diagnosis scheme." @default.
• W2401351034 created "2016-06-24" @default.
• W2401351034 creator A5031836646 @default.
• W2401351034 creator A5054043779 @default.
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• W2401351034 date "2016-09-01" @default.
• W2401351034 modified "2023-09-23" @default.
• W2401351034 title "Bond graph modeling and experimental verification of a novel scheme for fault diagnosis of rolling element bearings in special operating conditions" @default.
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• W2401351034 doi "https://doi.org/10.1016/j.jsv.2016.05.021" @default.
• W2401351034 hasPublicationYear "2016" @default.
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