Results 81 to 90 of about 54,584 (230)

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

open access: yesAdvanced Engineering Materials, Volume 28, Issue 6, 18 March 2026.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini   +6 more
wiley   +1 more source

Optimum design of a gearbox for low vibration [PDF]

open access: yes
A computer program was developed for designing a low vibration gearbox. The code is based on a finite element shell analysis, a modal analysis, and a structural optimization method.
Coy, John J.   +2 more
core   +1 more source

Contra-rotating marine current turbines : single point tethered floating system - stabilty and performance [PDF]

open access: yes, 2009
The Energy Systems Research Unit within the Department of Mechanical Engineering at the University of Strathclyde has developed a novel contra-rotating tidal turbine (CoRMaT). A series of tank and sea tests have led to the development and deployment of a
Clarke, Joseph Andrew   +4 more
core  

Enabling High‐Fidelity Wave‐Particle Interaction Studies: A Novel Filtering for Isolating Whistlers From Spacecraft Noise

open access: yesGeophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Resolving the mixture of natural plasma waves and persistent spacecraft interference is a fundamental challenge in space physics, as it obstructs the analysis of wave‐particle interactions and energy transport processes. Traditional signal decomposition methods often fail to adequately separate these components due to their time‐varying ...
Fulin Shi   +6 more
wiley   +1 more source

Experiment and Analysis of Gearbox Shell Vibration Modal based on DASP

open access: yesJixie chuandong, 2015
Through the experiment of the vibration modal of gearbox shell,the gearbox shell vibration state is analyzed and the stability of its operation is evaluated.By using DASP(Data Acquisition& Signal Processing)software,the vibration modal of the HW25505
Ma Weijin   +4 more
doaj  

OH-58 helicopter transmission failure analysis [PDF]

open access: yes
The OH-58 main transmission gearbox was run at varying output torques, speeds, and oil cooling rates. The gearbox was subsequently run to destruction by draining the oil from the gearbox while operating at a speed of 6200 revs per minute and 36,000 inch ...
Coy, J. J.   +2 more
core   +1 more source

Observer-based Fault Detection and Diagnosis for Mechanical Transmission Systems with Sensorless Variable Speed Drives [PDF]

open access: yes, 2015
Observer based approaches are commonly embedded in sensorless variable speed drives for the purpose of speed control. It estimates system variables to produce errors or residual signals in conjunction with corresponding measurements. The residual signals
Abusaad, Samieh   +3 more
core  

Dynamics of Multistage Gear Transmission with Effects of Gearbox Vibrations [PDF]

open access: yes
A comprehensive approach is presented in analyzing the dynamic behavior of multistage gear transmission systems with the effects of gearbox induced vibrations and mass imbalances of the rotor.
Choy, F. K.   +3 more
core   +1 more source

Investigating the Effect of Water Contamination on Gearbox Lubrication based on Motor Control Data from a Sensorless Drive [PDF]

open access: yes, 2014
Water is one of the most significant destructive contaminations to lubricants which in turn lead to more power consumption and early damage to rotating machines.
Abusaad, Samieh   +4 more
core  

Multi-objective Optimization Analysis of High Speed Gearbox based on Parametric Design

open access: yesJixie chuandong, 2016
To improve the static and dynamic characteristics of a high speed gearbox,the main object method of multi-objective optimization is applied in optimization analysis of structures in the high speed gearbox based on parametric design.
Gang Haiming, Liu Zhilei, Ge Shixiang
doaj  

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