Open AccessEffect of Biomet Recap Diameter and Clearance on Friction and Lubrication Behaviour Using Serum-Based Lubricants
Author(s) -
Muhammad Mahadi Abdul Jamil,
Mohamed Mubarak Abdul Wahab,
Chin Fhong Soon,
Mansour Youseffi
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1529/2/022023
Subject(s) - lubrication , carboxymethyl cellulose , materials science , lubricant , viscosity , range (aeronautics) , friction coefficient , composite material , metallurgy , sodium
The friction and lubrication behaviour of six Biomet ReCap components with nominal diameters of 46, 48, 50, 52, 54 and 56 mm and diametral clearances in the range 66-314μm have been investigated using a friction hip simulator. Friction testing was carried out using pure bovine serum (BS) and aqueous solutions of BS with and without carboxymethyl cellulose (CMC), adjusted to a range of viscosities (0.001-0.24 Pas). The Stribeck analyses suggested mixed lubrication as the dominant mode for all the ReCaps, but depending on the diameter and mainly clearance, the ReCaps articulated at different range of friction factors within the as mentioned viscosity range. The 56 and 54mm ReCaps with 233μm clearances had lower friction factors in the range 0.0311-0.079 and 0.053-0.11, respectively, as compared to the 46mm ReCap with 66μm clearance having friction factors in the range 0.0915-0.1558. The Stribeck curves showed the lowest achievable friction factors for clearances of greater than 150μm and less than 240μm. The 50mm ReCap with the highest clearance of 314μm had the highest friction factors in the range 0.1277-0.1515 suggesting that this clearance cannot be considered as the optimum gap between the bearings.