Performance of honed surface profiles to artificial hip joints: An experimental investigation
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- Choudhury, D., Walker, R., Roy, T. et al. Int. J. Precis. Eng. Manuf. (2013) 14: 1847. doi:10.1007/s12541-013-0247-z
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Surface texture technique increases the tribological capability and performance of bearing surfaces. This technology has a number of applications, including car engines and golf balls. However, the use of texture surface in artificial hip joints has not been adequately explored. The aim of the study is to investigate the effects of plateau honed surfaces on the tribological performance of metal-on-metal hip joints. Four sets of different plateau honed surfaces and a set of non-textured surface were investigated on a friction simulator with a lubricant having similar viscosity of pseudo-synovial fluid. The results showed 50% and 38% reductions in static and dynamic friction coefficient, respectively, for a honed surface (honed surface 3) compared with those of a non-textured surface after 1 million cycles. There was a number of wear signs, including adhesive and fatigue wear in all of the experimental surfaces. Nevertheless, the wear signs in the honed surface 3 were minor. Lubrication film thickness was thicker, and third body abrasive wear assumed to reduce in the honed surface since wear debris removed through honed channel. Therefore, the performance of a well-designed plateau-honed surface is significant in tribological aspects of metal-on-metal hip joints.