Results 31 to 40 of about 813,317 (386)
Machines, 2022 The fault quantification of a tapered roller bearing (TRB) can provide a reliable guide for predictive maintenance. Currently, damage size estimation based on vibration signals has been proposed and developed.
Wei Kang +5 more
doaj +1 more source
Rotor Dynamic Modeling and Analysis of a Flywheel Rotor [PDF]
Advances in Computer Science Research, 2015 misbaw6@yahoo.com This paper presents rotordynamic modeling and performance analyses of a flywheel energy storage system rotor that utilizes a hybrid magnetic bearing having an energy storage capacity of 220 W h at its operating speed of 20,000rpm. A rotor model designed in solid works 13 and imported into ansys 14.5 is presented with some its main ...
Yefa Hu +2 more
openaire +2 more sources
High-Fidelity Computational Aerodynamics of Multi-Rotor Unmanned Aerial Vehicles
, 2018 High-fidelity Computational Fluid Dynamics (CFD) simulations have been carried out for several multi-rotor Unmanned Aerial Vehicles (UAVs). Three vehicles have been studied: the classic quadcopter DJI Phantom 3, an unconventional quadcopter specialized ...
P. Diaz, Seokkwan Yoon
semanticscholar +1 more source
Ships and Offshore Structures, 2019 A 4 degrees of freedom ship performance prediction model is used to compare wind-assisted ship propulsion technologies: the Flettner rotor, a wingsail and the DynaRig concept.
R. Lu, J. Ringsberg
semanticscholar +1 more source
A rational approach to comparing the performance of coaxial and conventional rotors [PDF]
, 2009 The merit, in terms of its efficiency and performance, of the twin, contrarotating coaxial rotor configuration over the more conventional single rotor system has long been a point of contention.
Brown, R.E., Kim, Hyo Wan
core +1 more source
Friction, 2017 In this paper, the material removal mechanism of copper chemical mechanical polishing was studied by the quasicontinuum method that integrated molecular dynamics and the finite element method. By analyzing the abrasive process of different particle sizes
Aibin Zhu +3 more
doaj +1 more source
IEEE transactions on industrial electronics (1982. Print), 2019 Monitoring of induction motor faults based on stray flux measurement has been investigated by many researchers due to its potential benefits in cost and simplicity.
Yonghyun Park +8 more
semanticscholar +1 more source
Power curve and wake analyses of the Vestas multi-rotor demonstrator
Wind Energy Science, 2019 . Numerical simulations of the Vestas multi-rotor demonstrator (4R-V29) are compared with field measurements of power performance and remote sensing measurements of the wake deficit from a short-range WindScanner lidar system.
M. Laan +11 more
semanticscholar +1 more source
Effect of Aft Rotor on the Inter-Rotor Flow of an Open Rotor Propulsion System [PDF]
Volume 1: Aircraft Engine; Fans and Blowers; Marine, 2016 The effects of the aft rotor on the inter-rotor flow field of an open rotor propulsion rig were examined. A Particle Image Velocimetry (PIV) dataset that was acquired phase locked to the front rotor position has been phase averaged based on the relative phase angle between the forward and aft rotors.
Dale E. Van Zante +2 more
openaire +2 more sources
Nano-Micro Letters, 2020 Graphene-based materials on wearable electronics and bendable displays have received considerable attention for the mechanical flexibility, superior electrical conductivity, and high surface area, which are proved to be one of the most promising ...
Sicheng Chen +4 more
doaj +1 more source