THE ANALYSIS OF THE INFLUENCE OF STRESS DISTRIBUTION ON WEAR PROFILE IN LUBRICATED SLIDING CONTACT OF UHMW-PE VS TITANIUM Ti-13Nb-13Zr ALLOY
Journal Title: Tribologia - Year 2017, Vol 271, Issue 1
Abstract
Metal – polymer sliding contacts are a typical combination in industry and medicine. For decades such a set of materials has been the primary choice in human joints endoprosthetic technology. In this paper tribological issues of are presented from a research on the potential for practical use of Ti-13Nb-13Zr/UHMW-PE couple for orthopedic endoprosthesis. In tests on simplified models it is critically important to carefully select geometry of contact, load and velocity magnitudes and profiles to the later interpretation of results. In case of organic polymers interacting with metallic components the problem is even more prominent, than in the case of all metal systems because of great differences in the modulus of elasticity between the specimens in contact. High local loading can cause excessive heat generation and accelerated loss in polymer’s strength induced by thermal plastification. The process may not be manifested in the course of the experiment in any way detectable and might compromise the accuracy of wear measurement. In the case of the presented research an analysis has been performed to evaluate the observed wear profile of UHMW-PE with respect to non-uniform distribution of contact stress. A simulation was run with the use of FEM to evaluate the contact conditions between the titanium alloy and UHMW-PE specimens and the results were confronted with the wear profiles. Interesting similarities were discovered yielding useful information on the fundamentals of the wear in and for future research on similar systems.
Authors and Affiliations
Katarzyna ZASIŃSKA, Tomasz SERAMAK, Jacek ŁUBIŃSKI, Grzegorz ROTTA
Keywords
Related Articles
- EP ID EP240531
- DOI -
- Views 60
- Downloads 0
Tribologiczne badania wieloskładnikowego kompozytu na osnowie polioksymetylenu podczas tarcia ze stalą
THE INFLUENCE OF ADDITIVE TECHNOLOGY ON THE QUALITY OF THE SURFACE LAYER AND THE STRENGTH STRUCTURE OF PROSTHETIC CROWNS
Prosthetic crowns reproduce the damaged hard structures of the patient’s own teeth and take over their natural functions, thus securing the correct reconstruction of the stomatognathic system. The aim is to evaluate the...
A MODEL OF FRETTING WEAR IN CLAMPED JOINTS
The article proposes a mechanism for the development of fretting wear in clamped joint, based on the results of research conducted on the model of such a joint. The significant influence of such parameters as: the method...
Właściwości tribologiczne węzła tarcia z wykorzystaniem wybranych gatunków brązów
W pracy przedstawiono wyniki badań właściwości tribologicznych pary trącej stal X210Cr12 (60 HRC) i brąz CuSn12Ni2 w postaci odlewniczej i spiekanej (brązy proszkowe spiekane) smarowanego olejem handlowym silnikowym Sele...
PROPERTIES OF AN ANODIC OXIDE COATING MODIFIED BY THE APPLICATION OF A POLYMER FOR A FRICTION PAIR IN RECIPROCATING MOTION
The paper represents the results of investigations conducted on a tribological test for technically dry conditions of the friction. Analysis of the stereological counter-specimen was subjected from AOC and AOC modified s...