INVESTIGATIONS OF THE STATIC FRICTION COEFFICIENT OF PE-UHMW POLYETHYLENE SUBJECTED TO THE IONIZING RADIATIONS
Journal Title: Tribologia - Year 2015, Vol 263, Issue 5
Abstract
The paper describes an investigation of a static friction coefficient of PE-UHMW polyethylene subjected to ionizing radiations and aging, which imitated a biological influence of the human body on the tested material. Tribological tests were conducted in a reciprocating motion at the beginning of movement against ANSI 316L austenitic stainless steel and Ti6Al4V titanium alloy, both common materials applied in implantation surgery. Changes in the static friction coefficient were analysed in association with a contact pressure (in the range 0.5–2.5 MPa) depending on the ionizing radiation dose of PE-UHMW (in the range 25–250 kGy), for both kinds of metal counter samples. The studies confirmed that the static friction coefficient decreases with an increase in contact pressure (in the tested range). It has been found that the optimal ionizing radiation dose, due to the friction value, falls between 100 and 250 kGy, for all tested contact pressures and material couples. The mechanism of the reduction in frictional resistance values has not been identified in this case and requires further research, and the kinetic friction resistance needs to be determined.<br/><br/>
Authors and Affiliations
Piotr KOWALEWSKI, Robert JASIŃSKI
Keywords
Related Articles
- EP ID EP255890
- DOI -
- Views 72
- Downloads 0
Numerical analysis of the effect of backpull on tool wear in the process of wire drawing
THE INFLUENCE OF REDUCING TEMPERATURE ON CHANGING YOUNG’S MODULUS AND THE COEFFICIENT OF FRICTION OF SELECTED SLIDING POLYMERS
For the polymeric materials, changing of the temperature causes changes in mechanical and tribological properties of sliding pairs. The goal of the present study was to determine the change in Young's modulus and kinetic...
THE INFLUENCE OF ADDED WATER ON FUEL INJECTOR WEAR IN A DIESEL ENGINE
The article presents the problem of the wear of the components of injection apparatus of a self-ignition engine during the addition of water. The observer was subject to an injector from the KIPOR KDE3500E generator set...
Efektywność przeciwzużyciowa biododatków w wytypowanych olejach bazowych
Określono kryteria oceny właściwości przeciwzużyciowych i przeciwzatarciowych produktów otrzymanych w wyniku oczyszczania odpadów porafinacyjnych i modelowych kompozycji (na bazie poli-α-olefin i poliestrów) smarnych z i...
TRIBOLOGICAL PROPERTIES OF MOLYBDENUM LASER ALLOYED SURFACE LAYERS OF IRON ALLOYS OF VARYING CARBON CONTENT
The influence of carbon content on the molybdenum laser alloying process was presented. Microstructure, surface roughness, microhardness, and wear resistance were analysed. As a result of laser molybdenizing of C45 and C...