Results 71 to 80 of about 12,252 (219)

Performance Evaluation of Two Palm Kernel Nut Cracker Machines [PDF]

open access: yes, 2012
In this study performance evaluation of centrifugal impact approach and vertical palm kernel nut cracker machine was carried out. The results of the study show that the vertical centrifugal palm kernel cracker is more efficient than the centrifugal ...
Adekeye, T.   +2 more
core  

Tribological behavior of ZnO-Si3N4 nanoparticles-based lubricating grease

open access: yesJournal of Experimental Nanoscience, 2018
Currently, nanoparticles have been widely used as lubricant additives, few researches have investigated their applications as additives for lubricating grease.
Qiang He   +5 more
doaj   +1 more source

Roller Testing to Mimic Damage of the ISS SARJ Ring and Durability Test to Simulate Fifteen Years of SARJ Operation Using the Damaged Surface [PDF]

open access: yes
The International Space Station's starboard Solar Alpha Rotary Joint (SARJ) experienced a breakdown of the joint's race ring surface. The starboard SARJ mechanism was cleaned and lubricated with grease.
DellaCorte, Christopher   +3 more
core   +1 more source

Rolling-contact bearing reference summary [PDF]

open access: yes
Design and performance of rolling contact ...
Cox, D. B.   +3 more
core   +1 more source

INFLUENCE OF THE STIFFNESS AND FRICTIONAL CHARACTERISTICS ON THE SHANK TORQUE OF SCREWS IN BOLTED JOINTS [PDF]

open access: yes, 2018
This work aims at determining the influence of tribological and stiffness characteristics of a bolted joint on the residual shank torque of the screw.
Cavalli, Omar   +6 more
core  

Experience with synthetic fluorinated fluid lubricants [PDF]

open access: yes
Since the late 1970's, the wet lubricant of choice for space mechanisms has been one of the family of synthetic perfluoro polyalkylether (PFPE) compounds, namely Fomblin Z-25 (Bray-815Z) or DuPont's Krytox 143xx series.
Bohner, John J., Conley, Peter L.
core   +1 more source

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

open access: yes, 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  

Study on the sliding tribological behavior of ZIF-8 under lubricating grease conditions

open access: yesNanotechnology and Precision Engineering
ZIF-8 is widely applied in lubrication, adsorption, and catalysis owing to its unique physicochemical properties. Previous experimental studies have demonstrated its feasibility as a lubricant additive. In the present work, the lubricating performance of
Ling Pan   +4 more
doaj   +1 more source

Influence of Walker Curve Tooth Root Modification on Thermoelastic Grease Lubrication Characteristics of Large Internal Gears

open access: yesJixie chuandong, 2023
The influence of Walker curve modification method on the tooth surface lubrication state of grease lubricated large internal meshing cylindrical spur gears is studied. According to the meshing law and engineering experience of internal meshing gear pairs,
Wang Zhenbo, Zheng Peng, Zhao Wenhui
doaj  

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