Results 41 to 50 of about 2,418,912 (297)

The Accurate system numerical method for solving the mixed thermal elastic hydrodynamic lubrication

open access: yes工程科学与技术, 2016
:The majority of mechanical parts worked under mixed lubrication conditions, especially for components worked under extreme conditions such as high speeds, heavy loads and surfaces with significant roughness.
wang xiao peng   +4 more
doaj  

Transient mixed lubrication model of the human knee implant

open access: yesBiosurface and Biotribology, 2021
The human knee implant is computationally modelled in the mixed lubrication regime to investigate the tribological performance of the implant. This model includes the complex geometry of the implant components, unlike elliptical contact models that ...
Hamza Butt   +5 more
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

open access: yesAdvanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal   +3 more
wiley   +1 more source

The Influence of Scratches on the Tribological Performance of Friction Pairs Made of Different Materials under Water-Lubrication Conditions

open access: yesLubricants, 2023
Water-lubricated bearings are widely used in marine equipment, and the lubricating water often contains hard particles. Once these particles enter the gap between the bearing and the shaft, they can scratch the smooth surfaces of the shaft and bearing ...
Qingchen Liang   +5 more
doaj   +1 more source

Active Corrosion Protection of Sintered AA7075 Aluminum Alloy via Mn Powder Addition

open access: yesAdvanced Engineering Materials, EarlyView.
AA7075 containing Mn‐rich particles is fabricated via spark plasma sintering using AA7075 and Mn powders. Corrosion resistance is evaluated through dip‐and‐dry tests using 0.1 M NaCl (pH 6.0), and mass loss decreases with increasing Mn addition. Mn‐rich particles function as a source of Mn ions, and formation of Mn‐accumulation films on Cu‐containing ...
Ko Ebina, Masashi Nishimoto, Izumi Muto
wiley   +1 more source

Hybrid Metal–Carbon Ink for Printed Stretchable Temperature Sensors

open access: yesAdvanced Engineering Materials, EarlyView.
We prepare conductive inks for temperature sensing with silver flakes and carbon or graphite flakes in a silicone elastomer matrix. Silver dominates the temperature‐dependent conductivity, while the carbon filler network ensures the stability of the conductive pathways and retains function under strain.
Makara Lay   +3 more
wiley   +1 more source

Mixed and thermal elastohydrodynamic simulation of a low-loss gear considering the gear system

open access: yesFriction
The reduction of load-dependent gear power loss is one of the key aspects in gear design. Therefore, a detailed power loss prediction and the local investigation of its drivers are essential. In this study, the model of Farrenkopf et al.
Felix Farrenkopf   +2 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

open access: yesAdvanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein   +4 more
wiley   +1 more source

Analysis on Filtering Reducer Turning Arm Bearing Based on Thermal Mixed Lubrication

open access: yes工程科学与技术, 2018
The lubrication state of the working interface of the filtering reducer turning arm bearing is affected by load,contact geometry,rough surface thermal effect and other factors.It is difficult to figure out the lubrication condition of the working ...
Xiaopeng WANG   +4 more
doaj  

EEMD-TFMST-Based Vibration Feature Identification and Performance Analysis of Water-Lubricated Stern Bearings Under Long-Term Service Conditions

open access: yesLubricants
Under long-term service conditions, vibration signals of water-lubricated stern bearings exhibit strong nonlinearity, nonstationarity, and multicomponent coupling, which makes accurate feature extraction challenging.
Xinyi Liu   +4 more
doaj   +1 more source

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