A Continuous Shear Deflection Function for Articular Cartilage

2012 ◽  
Author(s):  
Mostafa Motavalli ◽  
Chen-Yuan Chung ◽  
Mark Schluchter ◽  
Joseph M. Mansour
Keyword(s):  
Articular Cartilage ◽  
Friction And Wear ◽  
Wear Properties ◽  
Low Friction ◽  
Cartilage Mechanics ◽  
Composition And Structure ◽  
Continuous Shear ◽  
Friction And Wear Properties ◽  
Engineered Cartilage ◽  
The Relationship

Articular cartilage (AC) covers the articulating bones within synovial joints. Mechanically, it provides a bearing surface with low friction and wear properties, and it lowers surface stress by deforming and increasing the contact area. Cartilage mechanics has received much attention, but until recently most investigations have focused on average properties of full thickness tissue. However, given depth dependent variations in composition and structure, there is a growing appreciation of the tissue’s inhomogeneity and its relationship to mechanical behavior [1–4]. Determining the depth-dependent mechanical properties plays an important role in understanding the relationship between function and structure of native, diseased and tissue-engineered cartilage.

High temperature friction and wear properties of graphene oxide/polytetrafluoroethylene composite coatings deposited on stainless steel

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5977-5987 ◽  
Author(s):  
N. Nemati ◽  
M. Emamy ◽  
S. Yau ◽  
J.-K. Kim ◽  
D.-E. Kim
Keyword(s):  
Stainless Steel ◽  
Graphene Oxide ◽  
Friction And Wear ◽  
Solid Lubricant ◽  
Composite Coatings ◽  
Friction Material ◽  
Wear Properties ◽  
Low Friction ◽  
Solid Lubricant Coating ◽  
Friction And Wear Properties

Polytetrafluoroethylene (PTFE) coating is known as a low friction material that is often used as a solid lubricant coating.

Friction and Wear Properties of Zr and TiC-Based Cermet Specimens in a Hydrogen Gas Atmosphere

2010 ◽  
Vol 638-642 ◽  
pp. 3412-3417 ◽  
Author(s):  
Takashi Murakami ◽  
Katsuo Kaneda ◽  
Hiroki Mano ◽  
Masayuki Hata ◽  
Shinya Sasaki ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Friction And Wear ◽  
Hydrogen Gas ◽  
Layered Crystal ◽  
Wear Properties ◽  
Low Friction ◽  
Friction Coefficients ◽  
Layered Crystal Structure ◽  
Gas Atmosphere ◽  
Friction And Wear Properties

In this study, Zr, Ti and TiC-based cermet specimens were prepared, and their friction and wear properties in various gas atmospheres were examined. The Zr specimens exhibited the lowest friction coefficients and the smallest volume change in the H2 gas atmosphere. This reason would have been due to the formation of the -type Zr hydride, which has a layered crystal structure. The Ti specimens exhibited similar friction and wear properties, although the TiC-based cermet specimens containing small amount of Mo, Ni and W exhibited the lowest friction coefficients in air, not in the H2 gas atmosphere. The low friction coefficients of the cermet specimens in air is likely to have been due to the formation of the low friction Mo oxides and W oxides.

Influence of the extracellular matrix on the frictional properties of tissue-engineered cartilage

2007 ◽  
Vol 35 (4) ◽  
pp. 677-679 ◽  
Author(s):  
M. Plainfossé ◽  
P.V. Hatton ◽  
A. Crawford ◽  
Z.M. Jin ◽  
J. Fisher
Keyword(s):  
Extracellular Matrix ◽  
Articular Cartilage ◽  
Tribological Properties ◽  
Low Friction ◽  
Frictional Properties ◽  
Native Tissue ◽  
Composition Structure ◽  
Friction Surfaces ◽  
Engineered Cartilage ◽  
The Relationship

Low-friction surfaces are critical for efficient joint articulation. The tribological properties of articular cartilage have been studied extensively in native tissue and joints. Despite their importance, very few studies have examined the frictional properties of tissue-engineered cartilage. We have therefore reviewed the relationship between composition, structure and friction in tissue-engineered cartilage.

Experimental investigation on tribological properties of carbon fabric composites: effects of carbon nanotubes and nano-silica

2017 ◽  
Vol 233 (5) ◽  
pp. 874-884 ◽  
Author(s):  
Majid R Ayatollahi ◽  
R Moghimi Monfared ◽  
R Barbaz Isfahani
Keyword(s):  
Carbon Nanotubes ◽  
Friction Coefficient ◽  
Friction And Wear ◽  
Nano Particles ◽  
Woven Composites ◽  
Carbon Fabric ◽  
Wear Properties ◽  
Low Friction ◽  
Fabric Composites ◽  
Friction And Wear Properties

In this study, the effects of nano-[Formula: see text] and carbon nanotubes on the friction and wear properties of carbon-epoxy woven composites have been explored. The unfilled carbon fabric composites and carbon fabric composites filled with carbon nanotubes and nano-[Formula: see text] were fabricated by vacuum infusion process. The worn surfaces were examined and possible wear mechanisms of unfilled and filled carbon fabric composites were discussed. In addition, the friction coefficient curves of unfilled and filled carbon fabric composites were analyzed and compared. The experimental results showed that either of the two nano-particles improved the friction coefficient and wear rate of carbon fabric composites; however, better improvement was observed for nano-SiO2. By adding these nano-particles to unfilled carbon fabric composites, a primary steady-state period with a low friction coefficient appeared in the friction coefficient curve of the composites, which indicates enhancement in bonding strength between carbon fiber and epoxy matrix due to the interfacial reinforcing action of the nano-particles.

Low friction and wear properties of carbon nanomaterials in high vacuum environment

2020 ◽  
Vol 143 ◽  
pp. 106058
Author(s):  
Hui Song ◽  
Jie Chen ◽  
Nan Jiang ◽  
Li Ji ◽  
Hongxuan Li ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Carbon Nanomaterials ◽  
High Vacuum ◽  
Wear Properties ◽  
Low Friction ◽  
Friction And Wear Properties ◽  
High Vacuum Environment

Texturing of UHMWPE surface via NIL for low friction and wear properties

2009 ◽  
Vol 43 (1) ◽  
pp. 015301 ◽  
Author(s):  
Tanu Suryadi Kustandi ◽  
Jian Huei Choo ◽  
Hong Yee Low ◽  
Sujeet K Sinha
Keyword(s):  
Friction And Wear ◽  
Wear Properties ◽  
Low Friction ◽  
Friction And Wear Properties

The Analysis on the Tribological Properties of TPU/PVC Blends under Oil Lubrication

2013 ◽  
Vol 774-776 ◽  
pp. 94-98
Author(s):  
Dao Yuan Pan ◽  
Peng Peng Wu ◽  
Zhong Xue Gao ◽  
Yu Zeng Zhang
Keyword(s):  
Working Conditions ◽  
Friction And Wear ◽  
Oil Lubrication ◽  
Wear Properties ◽  
Operation Conditions ◽  
Hydraulic Steering ◽  
Pros And Cons ◽  
Friction And Wear Properties ◽  
Lubrication Conditions ◽  
Better Than

Based on actual working conditions and parameters of the hydraulic steering gear, the purpose is optimizing the rubber seal of steering gear by different rubbers mixing technology. Compare the five kinds of rubber with metal of the friction characteristics in dynamic fit, it can obtain a performance excellent rubber real in the specific operation conditions. And then improve the overall service life of the steering gear. It is first prepared the same hardness TPU and PVC and blends that the ratio is 3:7, 5:5and7:3 in this article. The pros and cons of the five rubbers are analyzed in friction and wear properties of the above experimental. The test curve of coefficient friction and wear with time has been done under different load at constant low speed. It determines TPU/PVC = 3:7 blends through friction and wear and wear mechanism of five rubbers with steel comparatively analyses, and the heat resistance and wear resistance of them are better than the other TPU/PVC blends and PVC under oil lubrication conditions.

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