Results 11 to 20 of about 94,544 (242)

The lubrication of normal human ankle joints [PDF]

open access: yes, 1981
The geometry, friction and lubrication of normal human ankle joints have been investigated. The joints exhibited converging diverging surfaces in the direction of motion.
Medley, John.B.
core   +6 more sources

Achieving macroscale superlubricity with ultra-short running-in period by using polyethylene glycol-tannic acid complex green lubricant

open access: yesFriction, 2023
Superlubricating materials can greatly reduce the energy consumed and economic losses by unnecessary friction. However, a long pre-running-in period is indispensable for achieving superlubricity; this leads to severe wear on the surface of friction pairs
Changhe Du   +8 more
doaj   +1 more source

Modulus adaptive lubricating prototype inspired by instant muscle hardening mechanism of catfish skin

open access: yesNature Communications, 2022
Stimuli responsive materials are interesting for applications in different technological fields, but realizing controllable surface friction-control based on the change of the modulus of a material is less investigated.
Yunlei Zhang   +8 more
doaj   +1 more source

Bioinspired PcBN/hBN fibrous monolithic ceramic: High-temperature crack resistance responses and self-lubricating performances

open access: yesJournal of Advanced Ceramics, 2022
The high strength and toughness of natural materials are mainly determined by a combination of mechanisms operating at different length scales, which can be used as a strategy to reduce the intrinsic brittleness of ceramics. Inspired by the architectures
Shu-na Chen   +6 more
doaj   +1 more source

Macro-superlubricity in sputtered MoS2-based films by decreasing edge pinning effect

open access: yesFriction, 2023
To date, MoS2 can only be achieved at microscale. Edge pinning effect caused by structure defects is the most obvious barrier to expand the size of structural superlubricity to macroscale.
Chunmeng Dong   +8 more
doaj   +1 more source

EHD friction properties of ISO VG 320 gear oils with smooth and rough surfaces

open access: yesFriction, 2019
The elastohydrodynamic (EHD) friction properties of seven ISO VG 320 gear oils including three polyalphaolefins (PAOs), three polyglycols (PG) and a mineral oil have been investigated in rolling/sliding conditions at six different temperatures and three ...
Balasubramaniam Vengudusamy   +2 more
doaj   +1 more source

Design of large-span stick-slip freely switchable hydrogels via dynamic multiscale contact synergy

open access: yesNature Communications, 2022
Switching between adhesive and non-adhesive states is important to design materials with on-demand adhesion properties but realizing reversible switching on large scale remains challenging.
Zhizhi Zhang   +7 more
doaj   +1 more source

A robust membrane with dual superlyophobicity for solving water-caused lubricant deterioration and water contamination

open access: yesFriction, 2023
Lubricants are often contaminated by water in different ways. Water-polluted lubricants extremely accelerate wear corrosion, leading to the deterioration of lubricity performance.
Siyang Zhao   +6 more
doaj   +1 more source

Approximate Analytical Model for the Squeeze-Film Lubrication of the Human Ankle Joint with Synovial Fluid Filtrated by Articular Cartilage [PDF]

open access: yes, 2010
The aim of this article is to propose an analytical approximate squeeze-film lubrication model of the human ankle joint for a quick assessment of the synovial pressure field and the load carrying due to the squeeze motion.
Emilio Gòmez   +5 more
core   +1 more source

Raw Data: Gas phase lubrication study with an organic friction modifier

open access: yes, 2021
XPS / tribometer / mass spectrometer raw data supporting the publication "Gas phase lubrication study with an organic friction ...
Daum, Philipp   +4 more
core   +1 more source

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