Results 51 to 60 of about 88,799 (310)

Effect of Surface Texturing on Friction and Film Thickness under Starved Lubrication Conditions [PDF]

, 2015
Tato disertační práce se zabývá vlivem mělkých mikro-textur na tření a tloušťku filmu v mazaných nekonformních kontaktech za extrémních podmínek a za podmínek hladovění kontaktu. Měření byla realizována na tribometru v konfiguraci ball-on-disk.
Ali, Fadi
core  

Analysis of Elastohydronamic Lubrication of the Roller Enveloping End Face Engagement Worm Drive

Jixie chuandong, 2020
To study the lubrication performance of roller enveloping end face engagement worm drive， the elastohydrodynamic lubrication （EHL） model is established based on meshing theory of roller enveloping end face engagement worm drive and the theory of EHL ...
Xiaolong Wang
doaj  

Effect of Characteristic Parameters and Distribution of Friction Pair Surface Texture on Lubrication Properties

Lubricants, 2023
Based on the basic mechanism and bionics principle that texture affects the dynamic pressure effect of lubricating medium, a V-shaped texture that converges along the sliding direction is designed.
Haowen Qiang, Guangming Gao, Sitong Ye, Linkai Cheng, Quandai Wang   +4 more
doaj   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

The influence of heterogenous porosity on silicon nitride/steel wear in lubricated rolling contact [PDF]

, 2000
Heterogeneous porosity is detected on the surface and subsurface of hot isostatically pressed (HIPed) silicon nitride spherical rolling elements. The extent of the localised porosity accounts for an area of 6% of the rolling element surface and 4% of the
Hadfield, M, Kang, J
core  

Isothermal Elasto-hydrodynamic Lubrication Analysis of the Roller Enveloping End Face Meshing Worm Drive

Jixie chuandong, 2022
Based on the transmission theory of single roller enveloping end face meshing worm drive and isothermal elastohydrodynamic lubrication theory， and considering the influence of surface wavy roughness， a numerical analysis method is adopted to analyze the ...
Xiaolong Wang, Honghui Liao
doaj  

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

A new type of dense silicon nitride-based metamaterial

Journal of Advanced Ceramics
Electromagnetic metamaterials have attracted widespread attention because of their unique properties, and the introduction of conductive metals or carbon into an insulating matrix is the main method for preparing metamaterials.
Lujie Wang, Xuejian Liu, Qian Qi, Dewei Ni, Hui Zhang, Jie Yin, Zhuhui Qiao, Zhengren Huang   +7 more
doaj   +1 more source

Evaluating the effect of minimum quantity lubrication during hard turning of AISI D3 steel using vegetable oil enriched with nano-additives

Alexandria Engineering Journal, 2022
Conventional flood lubrication techniques have serious impacts on the environment, health, and economy. Thus, the implementation of advanced lubrication techniques such as minimum quantity lubrication (MQL) has gained attraction worldwide as a reliable ...
Ahmed Mohamed Mahmoud Ibrahim, Mohamed A.E. Omer, Sudhansu Ranjan Das, Wei Li, Mohammad S. Alsoufi, Ammar Elsheikh   +5 more
doaj   +1 more source