Results 21 to 30 of about 399,584 (308)

The Hard on Hard Bearings in THA – Current concepts [PDF]

open access: yesJournal of Orthopaedics, 2014
Total hip arthroplasty has been one of the most successful inventions of the last century with useful results in decreasing pain and improving function in patients with degenerative disease of the hip. Improvements in prosthetic materials, designs and implant fixation have now resulted in wear of the bearing surface being the limitation of this ...
openaire   +2 more sources

A Study of Motor Bearing Fault Diagnosis using Modulation Signal Bispectrum Analysis of Motor Current Signals

open access: yes, 2013
Failure of induction motors are a large concern due to its influence over industrial production. Motor current signature analysis (MCSA) is common practice in industry to find motor faults. This paper presents a new approach to detection and diagnosis of
Chen, Zhi   +5 more
core   +1 more source

A multiscale overview of modelling rolling cyclic fatigue in bearing elements [PDF]

open access: yes, 2022
During service, bearing components experience rolling cyclic fatigue (RCF), resulting in subsurface plasticity and decay of the parent microstructure.
Abdullah, U., Khan, Z.A.
core   +1 more source

Current-Based Bearing Fault Diagnosis Using Deep Learning Algorithms

open access: yesEnergies, 2021
Artificial intelligence algorithms and vibration signature monitoring are recurrent approaches to perform early bearing damage identification in induction motors.
Andre S. Barcelos   +1 more
doaj   +1 more source

Fault diagnosis of motor drives using stator current signal analysis based on dynamic time warping [PDF]

open access: yes, 2013
Electrical motor stator current signals have been widely used to monitor the condition of induction machines and their downstream mechanical equipment. The key technique used for current signal analysis is based on Fourier transform (FT) to extract weak ...
Gu, Fengshou   +6 more
core   +1 more source

Review on Tribological and Vibration Aspects in Mechanical Bearings of Electric Vehicles: Effect of Bearing Current, Shaft Voltage, and Electric Discharge Material Spalling Current

open access: yesLubricants
Electric motors play a decisive role in electric vehicles by converting electrical energy into mechanical motion across various drivetrain components.
Rohan Lokhande   +5 more
doaj   +1 more source

An Overview on Electrodynamic Bearings

open access: yesIEEE Access, 2022
In electrodynamics, the levitation ensues when there is a relative motion between a stator and a conductor owing to which high eddy currents are induced.
Supreeth D. K.   +2 more
doaj   +1 more source

Mitigation of Electrical Discharge Damage in Electric Vehicle Bearings: Comparative Study of Multi-Walled Carbon Nanotubes and Alumina Nanoparticles in Lubricating Grease

open access: yesVehicles
The electrified environments encountered in electric vehicles (EVs) in terms of parasitic currents present significant challenges for the performance of EV bearings and their lubricants. This study investigates the effectiveness of various concentrations
Emmanuel R. Jonjo   +3 more
doaj   +1 more source

Simulation of the Circulating Bearing Currents for Different Stator Designs of Electric Traction Machines

open access: yesMachines, 2023
Pulse–width modulated inverters are commonly used to control electrical drives, generating a common mode voltage and current with high–frequency components that excite the parasitic capacitances within electric machines, such as permanent magnet ...
Yusa Tombul   +2 more
doaj   +1 more source

Phase-compensation-based dynamic time warping for fault diagnosis using the motor current signal [PDF]

open access: yes, 2012
Dynamic time warping (DTW) is a time-domain-based method and widely used in various similar recognition and data mining applications. This paper presents a phase-compensation-based DTW to process the motor current signals for detecting and quantifying ...
Gu, Fengshou   +11 more
core   +1 more source

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