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 75
- Downloads 0
Właściwości tribolgiczne warstwy wierzchniej z borem w warunkach tarcia ślizgowego
Właściwości tribologiczne par ciernych zależą od ich konstrukcji, zastosowanych materiałów i przeprowadzonej obróbki powierzchniowej elementów pary. Celem badań było wyznaczenie wpływu modyfikacji warstwy powierzchniowej...
THE TRIBOLOGICAL PROPERTIES OF COATINGS LUBRICATED WITH A BIODEGRADABLE CUTTING FLUID
This paper presents the tribological results of on investigations of TiAlN coatings that were deposited on HS6-5-2C steel using the physical vapour deposition PVD technique. An observation of the coating structure was ca...
RESEARCH OF THE ADHESION OF STEEL AND PLASTICS IN THE CONTEXT OF THEIR APPLICATION IN FRICTIONAL COUPLES
The paper deals with adhesion properties of steels and polymers in the context of their application in frictional couples. A general method for a qualitative estimate of the adhesive properties of solids is wetting angle...
THE INFLUENCE OF MECHANICAL FORCE ON THE CREATING STRENGTH OF SURFACE LAYER WITH AW/EP ADDITIVES
The paper presents the results of investigation of AW/EP additive influence on the tribological characteristics greases. The influences of different quantities of active element on the durability surface layer were teste...
ANALIZA WARTOŚCI CIŚNIENIA HYDRODYNAMICZNEGO I SIŁY NOŚNEJ PRZY RÓŻNYCH METODACH ROZWIĄZYWANIA RÓWNANIA TYPU REYNOLDSA
Obliczanie rozkładu ciśnienia hydrodynamicznego w szczelinie łożyska ślizgowego następuje najczęściej na podstawie gotowych programów komputerowych opartych na metodach CFD lub własnych procedur obliczeniowych opartych n...