...Oleg V. Tolochko; Ilya A. Kobykhno; Svetlana I. Khashirova; Azamat A. Zhansitov; Alexander D. Breki; Michael Nosonovsky Polyetheretherketone (PEEK) is a promising polymer material for tribological applications. Friction and wear tests of PEEK samples versus steel with different melt flow indices...

..., the present model has been used to simulate the contact between a polymethyl methacrylate (PMMA) substrate and a rigid sphere driven by step, ramped, and harmonic normal loads. The validated model and numerical method can successfully compute the viscoelastic contact responses of polymer-based materials...

... alloys cobalt alloys molecular biophysics molecular weight polymers proteins sliding friction stainless steel surface roughness wear articular cartilage biomaterials friction hemiarthroplasty wear Nonbiological materials are commonly used in contact with native articular...

...Arthur Francisco; Houssein Abbouchi; Bernard Villechaise The background of the present study is the rolling contact fatigue (RCF) in a brittle polymer disk. The disk has been tested on a two disk machine, under controlled normal and tangential loads, with no global slip. After several million...

... condition. 27 02 2008 09 09 2008 04 12 2008 elastic deformation finite element analysis internal stresses mechanical contact polymers rolling bearings tapered roller bearing dynamics cage behavior elastic deformation stress In some cases, the cage of a rolling...

...A. Ovcharenko; G. Halperin; I Etsion The creep of a polymer sphere contacting a rigid flat under a constant normal load is investigated experimentally. An optical technique is used to observe in situ the evolution of the contact area while the increase of contact interference is measured...

...Masayuki Kanatsu; Hiroyuki Ohta A running torque analysis was performed on axially loaded deep groove ball bearings lubricated with a polymer lubricant. The analysis included a Type I and a Type II bearing. The Type I bearing has a stamped steel riveted cage with its cavity packed with the polymer...

...Susumu Ogata; Hedong Zhang; Kenji Fukuzawa; Yasunaga Mitsuya Using a coarse-grained molecular dynamics simulation based on the bead-spring polymer model, we reproduced the film distribution of molecularly thin lubricant films with polar end groups coated on the disk surface and quantified the film...

... used for surgeries, microassembly, and micromanipulation. 03 04 2006 01 05 2007 friction piezoelectric materials piezoelectricity polymers surface phenomena piezoelectric material PVDF friction surface characterization Polyvinylidene fluoride (PVDF) is a well...

... speeds. Referring to Fig. 2 , the angular oscillation Θ 1 of the top shaft, containing the polymer specimen, is 2 Θ 1 = A 1 sin ω t where A 1 is the amplitude of the oscillation (rad) and ω is the oscillation frequency. The angular oscillation Θ 2...

... of Bone Structural Units ,” Eur. Cells Mater 1473-2262 , 1 , pp. 12 – 17 . 24 06 2005 21 11 2005 wear prosthetics biomechanics polymers bone cobalt alloys chromium alloys The reason for revision in ∼ 60 - 70 % of cases currently is aseptic loosening...

... of attenuation of light through a slide, the particles were illuminated using a red filter from the top (reflected light) and a green filter from the bottom (transmitted light). Green light passes up through UHMWPE debris (the polymer being birefringent), and looks green, yellow or light pink in the microscope...

... of air entrainment between the web and the roller, it is important to predict the air film thickness accurately for controlling the traction in many web handling applications. rollers (machinery) traction polymers thin films permeability manufacturing systems 25 02 2004 06 10...

... Lubrication ,” ASME J. Tribol. 0742-4787 , 107 , pp. 452 – 462 . Hsu , G. , Yagle , A. E. , Ludema , K. C. , and Levitt , J. A. , 2000 , “ Modeling and Identification of Lubricated Polymer Friction Dynamics ,” J. Dyn. Syst., Meas., Control 0022-0434 10.1115/1.482431 , 122...

... with the visual assessment of these samples using scanning electron microscopy. 24 02 2004 01 06 2005 biomedical materials orthopaedics prosthetics polymers wear wear testing shear deformation surface roughness friction Cross-shear Multi-directional TKR UHMWPE Wear...

... force and normal load is in the form of a power law with an exponent lower than unity, as shown previously. However, the friction coefficient decreases with sliding speed when both polymers are lubricated. It appears that higher speed promotes the development of higher pressure in the fluid...

... surfaces. Primary and secondary forms of the additive are shown to form films of different morphology and properties. Colloid probe atomic force microscopy has also been applied to study the boundary film-forming properties of functionalized viscosity modifier polymers. It is shown that these polymers can...

... in the ASME JOURNAL OF TRIBOLOGY . Manuscript received by the Tribology Division January 24, 2003 revised manuscript received March 10, 2004. Review conducted by: M. D. Bryant. 24 January 2003 10 March 2004 07 04 2005 polymers biomedical materials sliding friction biomechanics...

.... , and Crowinshield , R. D. , 2003 , “ The Influence of Lubricant and Material on Polymer/CoCr Sliding Friction ,” Wear 0043-1648 , 255 , pp. 780 – 784 . Cooke , A. V. , Dowson , D. , and Wright , V. , 1978 , “ The Rheology of Synovial Fluid and Some Potential Synthetic Lubricants...

... as function of the operating parameters. Consistent relations were also found between the integrated AE signal over time and the wear volume as well as the friction work. steel polymers sliding friction acoustic emission wear It is well known that although wear is a property...