Results 71 to 80 of about 4,495 (247)

Fault Diagnosis Method for Rolling Bearings Based on Composite Multiscale Fluctuation Dispersion Entropy

open access: yesEntropy, 2019
This paper proposes a new method named composite multiscale fluctuation dispersion entropy (CMFDE), which measures the complexity of time series under different scale factors and synthesizes the information of multiple coarse-grained sequences.
Xiong Gan, Hong Lu, Guangyou Yang
doaj   +1 more source

Efficient Self‐Cleaning and Anti‐Bacterial Behavior Realized by Hierarchical Structure in Hybrid Waterborne Polyurethane Coatings Containing Photocatalyst

open access: yesAdvanced Materials Interfaces, EarlyView.
Hybrid WPU coatings with a hierarchical structure are constructed by first directional freezing polymerization of degradable hydrogels with a vertical channel structure and then filling these channels with aqueous WPU solution containing carbon nitride (g‐C3N4) nanosheets.
Xiaobei Zhou   +8 more
wiley   +1 more source

Method for Calculating the Parameters of Shock Pulses in Bearings with Local Damages to Raceways

open access: yesМеханика машин, механизмов и материалов, 2020
The method proposed in the article for calculating the parameters of shock pulses generated in rolling bearings when local defects occur is a development of research in the scientific direction of vibration-pulse diagnostics in relation to the ...
Nikolay N. Ishin   +3 more
doaj  

Light‐Programmable Interfaces: From Molecular Photoswitching to Adaptive Membrane Separations

open access: yesAdvanced Materials Interfaces, EarlyView.
This review advances an interface‐centered framework for light‐responsive membranes, linking molecular photoswitches (azobenzene (AZO), spiropyran (SP), diarylethene (DAE), donor–acceptor Stenhouse adducts (DASA), photoacid) to integration strategies in polymeric, porous, self‐assembled, and mixed‐matrix systems.
Liangliang Zhang   +6 more
wiley   +1 more source

DEFINITION OF GEOMETRICAL PARAMETERS FOR COMBINED CONE ROLLING BEARINGS OF 2K-V-TYPE PLANETARY PIN CARRIER

open access: yesAdvanced Engineering Research, 2011
The method for determining the geometrical parameters of the cone rolls when designing the angular contact combined cone rolling bearings of 2K-V-type planetary pin carrier with the off-centroidal inner mangle gear at the second stage is stated.
Sergey O. Kireyev   +2 more
doaj  

Fault Diagnosis for Rolling Bearing under Variable Conditions Based on Image Recognition

open access: yesShock and Vibration, 2016
Rolling bearing faults often lead to electromechanical system failure due to its high speed and complex working conditions. Recently, a large amount of fault diagnosis studies for rolling bearing based on vibration data has been reported.
Bo Zhou, Yujie Cheng
doaj   +1 more source

Water‐Stable Paper‐Based Laser‐Induced Graphene With Asymmetric Water Adhesion and Wettability

open access: yesAdvanced Materials Interfaces, EarlyView.
Paper‐based electronics are attractive for sustainable and disposable devices, but often fail in wet environments. By introducing Parafilm into cellulose paper combined with laser conversion, two graphene surfaces with different water interactions are created.
Lingyin Meng   +3 more
wiley   +1 more source

Dynamics Modeling and Analysis of Local Fault of Rolling Element Bearing

open access: yesAdvances in Mechanical Engineering, 2015
This paper presents a nonlinear vibration model of rolling element bearings with 5 degrees of freedom based on Hertz contact theory and relevant bearing knowledge of kinematics and dynamics.
Lingli Cui, Xue Chen, Shujun Chen
doaj   +1 more source

Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels

open access: yesAdvanced Materials Interfaces, EarlyView.
When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir   +6 more
wiley   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani   +3 more
wiley   +1 more source

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