Results 21 to 30 of about 20,332,447 (330)

Acoustic Emissions and monitoring bearing health [PDF]

open access: yes, 2003
Acoustic emission (AE) was originally developed for non-destructive testing of static structures. however, over the years its application has been extended to health monitoring of rotating machines and bearings.
Mba, David
core   +1 more source

Electrical Bearing Damage, A Problem in the Nano- and Macro-Range

open access: yesLubricants, 2022
Rolling bearings face different damaging effects: Besides mechanical effects, current-induced bearing damage occurs in electrical drive systems. Therefore, it is of increasing interest to understand the differences leading to known electrical damage ...
Volker Schneider   +9 more
doaj   +1 more source

Modified Slot Opening for Reducing Shaft-to-Frame Voltage of AC Motors

open access: yesEnergies, 2020
This paper presents a method to reduce the winding-to-rotor capacitance of electrical machines for the purpose of suppressing shaft-to-frame voltage, which causes reliability issues, such as electromagnetic interference (EMI) and bearing current.
Manje Yea, Ki Jin Han
doaj   +1 more source

Prediction of Ultimate Bearing Capacity of Long-Term Loaded Piles

open access: yesShanghai Jiaotong Daxue xuebao, 2021
To predict the ultimate bearing capacity of long-term loaded piles, the shortcomings of current empirical formulas of pile bearing capacity considering time effect are discussed.
LI Jingpei, XU Zihan
doaj   +1 more source

Suppression of Harmonic Current in Magnetic Bearing–Rotor System with Redundant Structure

open access: yesApplied Sciences, 2022
The magnetic bearing–rotor system has the advantages of no mechanical friction and active vibration control. A magnetic bearing with redundant structures provides an effective method to apply fault-tolerant control to the magnetic bearing–rotor system ...
Baixin Cheng   +4 more
doaj   +1 more source

Bearing Voltage Prediction-Based Selective NLM Correction for EDM Suppression in Marine MMC Propulsion Drives

open access: yesJournal of Marine Science and Engineering
Bearing damage caused by electric discharge machining (EDM) is a concern in electric ship propulsion drives, particularly during low-speed operations such as maneuvering and slow steaming.
Sungwoo Song   +4 more
doaj   +1 more source

Bearing defect diagnosis and acoustic emission. [PDF]

open access: yes, 2003
Acoustic emission (AE) was originally developed for non-destructive testing of static structures, however, over the years its application has been extended to health monitoring of rotating machines and bearings.
Mba, David   +3 more
core   +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

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

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

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