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Keywords: molecular weight
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Journal Articles

Friction and Wear of Hemiarthroplasty Biomaterials in Reciprocating Sliding Contact With Articular Cartilage

S. M. T. Chan, C. P. Neu, K. Komvopoulos, A. H. Reddi, P. E. Di Cesare
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 041201.
https://doi.org/10.1115/1.4004760
Published Online: October 10, 2011
...S. M. T. Chan; C. P. Neu; K. Komvopoulos; A. H. Reddi; P. E. Di Cesare Friction and wear of four common orthopaedic biomaterials, alumina (Al 2 O 3 ), cobalt-chromium (CoCr), stainless steel (SS), and crosslinked ultra-high-molecular-weight polyethylene (UHMWPE), sliding against bovine articular...
View Article titled, Friction and Wear of Hemiarthroplasty Biomaterials in Reciprocating Sliding Contact With Articular Cartilage
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Topics: Biomaterials, Cartilage, Friction, Proteins, Surface roughness, Wear, Nanoscale phenomena
Journal Articles

Tribological and Nanomechanical Properties of Unmodified and Crosslinked Ultra-High Molecular Weight Polyethylene for Total Joint Replacements

J. Zhou, Graduate Student, A. Chakravartula, Graduate Student, L. Pruitt, Professor, K. Komvopoulos, Professor, Fellow ASME
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2004, 126(2): 386–394.
https://doi.org/10.1115/1.1611511
Published Online: April 19, 2004
...J. Zhou, Graduate Student; A. Chakravartula, Graduate Student; L. Pruitt, Professor; K. Komvopoulos, Professor, Fellow ASME Wear of ultra-high molecular weight polyethylene (UHMWPE) continues to be a major obstacle limiting the longevity of total joint replacements. Efforts to solve the wear...
View Article titled, Tribological and Nanomechanical Properties of Unmodified and Crosslinked Ultra-High <span class="search-highlight">Molecular</span> <span class="search-highlight">Weight</span> Polyethylene for Total Joint Replacements
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Topics: Arthroplasty, Creep, Gamma rays, Microscale devices, Molecular weight, Nanoindentation, Polymers, Stress, Testing, Tribology
Journal Articles

Lubricants With Non-Newtonian Rheology and Their Degradation in Line Contacts

Ilya I. Kudish, Ruben G. Airapetyan
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2004, 126(1): 112–124.
https://doi.org/10.1115/1.1609484
Published Online: January 13, 2004
.... The kinetic equation is solved along the lubricant flow streamlines. The solution of the kinetic equation predicts the density of the probabilistic distribution of the polymer molecular weight versus polymer molecule chain length. The changes in the distribution of polymer molecular weight affect local...
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Topics: Lubricants, Viscosity, Rheology, Flow (Dynamics), Stress, Polymers, Molecular weight
Journal Articles

Modeling of Line Contacts With Degrading Lubricant

Ilya I. Kudish, Ruben G. Airapetyan
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2003, 125(3): 513–522.
https://doi.org/10.1115/1.1538193
Published Online: June 19, 2003
... of the probabilistic distribution of the polymer molecular weight versus polymer molecule chain length. The changes in the distribution of polymer molecules affect local lubricant properties. In particular, the lubricant viscosity changes as polymer molecules undergo scission. These irreversible changes...
View Article titled, Modeling of Line Contacts With Degrading Lubricant
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Topics: Flow (Dynamics), Lubricants, Polymers, Viscosity, Molecular weight, Lubrication, Stress, Pressure
Journal Articles

Spreading Characteristics of Molecularly Thin Lubricant on Surfaces With Groove-Shaped Textures: Effects of Molecular Weight and End-Group Functionality

Hedong Zhang, Yasunaga Mitsuya, Professor, Maiko Yamada
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2003, 125(2): 350–357.
https://doi.org/10.1115/1.1509771
Published Online: March 19, 2003
...Hedong Zhang; Yasunaga Mitsuya, Professor; Maiko Yamada Effects of molecular weight and end-group functionality on spreading of molecularly thin perfluoropolyether (PFPE) film over solid surfaces with groove-shaped textures have been studied by experiments and Monte Carlo simulations...
View Article titled, Spreading Characteristics of Molecularly Thin Lubricant on Surfaces With Groove-Shaped Textures: Effects of <span class="search-highlight">Molecular</span> <span class="search-highlight">Weight</span> and End-Group Functionality
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Topics: Disks, Lubricants, Molecular weight, Simulation, Texture (Materials), Ising model