Department of Mechatronics Engineering, Kongu Engineering College, Erode, TamilNadu, 638052, India.
Department of Mechatronics Engineering, Kongu Engineering College, Erode, TamilNadu, 638052, India.
Med Eng Phys. 2021 Dec;98:83-90. doi: 10.1016/j.medengphy.2021.11.001. Epub 2021 Nov 4.
Tribological study of zirconia toughened alumina against alumina is investigated using ball-on-disk tribometer with different bio-lubricants. Friction and wear coefficients are estimated for these bio-lubricants under four different loading conditions which are equivalent to regular and risky human gait activities. Experiments are carried out for a total sliding distance of 10 km with each bio-lubricant to estimate its friction and wear coefficients. Using submodeling finite element approach, cumulative linear and volumetric wear is estimated with the help of contact pressure. The sesame oil bio-lubricant showed better wear coefficient for risky gait activities and Ringer's solution exhibited minimum wear coefficient for normal walking gait activity. Overall minimum cumulative linear and volumetric wear for 2 million cycles was obtained for Ringer's solution.
采用球盘式摩擦磨损试验机，使用不同的生物润滑剂，对氧化锆增韧氧化铝与氧化铝的摩擦学性能进行了研究。在相当于常规和危险人类步态活动的四种不同载荷条件下，估算了这些生物润滑剂的摩擦系数和磨损系数。在每种生物润滑剂下，实验总滑动距离为 10km，以估算其摩擦系数和磨损系数。使用子模型有限元方法，借助接触压力估算了累计线性和体积磨损。芝麻油生物润滑剂在危险步态活动中表现出更好的磨损系数，而林格氏溶液在正常步行步态活动中表现出最小的磨损系数。在 200 万次循环中，林格氏溶液的总累计线性和体积磨损最小。
