Electrical Bearing Damage, A Problem in the Nano- and Macro-Range
Lubricants, 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
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Modelling of the Bearing Breakdown Resistance in Bearing Currents Problem of AC Motors
Energies, 2019 With the wide application of pulse width modulation (PWM) technology in motor driving, the bearing current problem has become more and more severe. The most complicated problem in analyzing bearing currents is modeling the equivalent circuit of the ...
Xuejiao Ren, Ruifang Liu, Erle Yang
doaj +1 more source
Influencing Factors on the Fluting in an Axial Ball Bearing at DC Bearing Currents
Lubricants, 2023 The effect of variable DC bearing current amplitude, bearing current polarity, mechanical force, rotation speed, bearing temperature, and number of the balls on the fluting in an axial ball bearing type 51208 is investigated under DC currents.
Omid Safdarzadeh +4 more
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Modified Slot Opening for Reducing Shaft-to-Frame Voltage of AC Motors
Energies, 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
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Prediction of Ultimate Bearing Capacity of Long-Term Loaded Piles
Shanghai 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
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Best Practices in Second Stage Labor Care: Maternal Bearing Down and Positioning [PDF]
, 2007 Despite evidence of adverse fetal and maternal outcomes from the use of sustained Valsalva bearing down efforts, current second-stage care practices are still characterized by uniform directions to “push” forcefully upon complete dilatation of the cervix
American College of Obstetricians and Gynecologists +8 more
core +2 more sources
Current-carrying friction in carbon coated ball bearing
Friction, 2023 In this work, we proposed a method for coating the whole surfaces of bearing balls uniformly by carbon film with a rotatable ball clamp. We studied the carbon/carbon friction with a self-designed current-carrying ball bearing friction test system.
Peidong Xue +3 more
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Suppression of Harmonic Current in Magnetic Bearing–Rotor System with Redundant Structure
Applied 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
Current-Based Bearing Fault Diagnosis Using Deep Learning Algorithms
Energies, 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
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2-D strength prediction of single-row multi-bolted joints woven fabric kenaf composites [PDF]
, 2018 Implementation of multi-bolts arrangements in structures connections are commonplace in steel design to allow for joint efficiency and stronger connections.
Ahmad, Hilton@Mohd Hilton, Supar, Khairi
core +1 more source