Investigation of Friction and Sliding Wear for Journal Bearing Using Taguchi Optimization

Abstract

The service life of journal bearing depends on the frictional behaviour of its components. The mechanical components failed due to the wear, oxidation, and corrosion phenomena. In this paper, the effect of the normal load, materials hardness and the sliding velocity on the wear and friction are presented. Based on the L16 orthogonal array of Taguchi analysis and ASTM G99 standard, the sliding wear and friction test were conducted. The loads 5 N to 20 N, the sliding velocity 0.1 ms <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> to 0.75 ms <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> , the counter materials brass (60 BHN), mild steel (130 BHN) against austenitic stainless steel 316L and dry, wet operating conditions at room temperature were used for the experimentation. The parameter's impact on the wear rate were investigated using analysis of variance (ANOVA). Based on the wear rate and coefficient of friction, the normal load, sliding velocity, material hardness difference, and operating conditions were ranked. The worn track morphology and the experimental results were correlated. The wear-track microstructure was analysed with a scanning electron microscope (SEM) to identify the wear mechanism. The adhesive and abrasive wear are found to be primary wear mechanisms.