... performed. A maximum hardness of 133.3 HV was obtained at the top layer of the FGM. Pin-on-disc wear apparatus was used to evaluate the wear-rate and the coefficient of friction (COF) of the sintered specimen at varied loads. Specimens exhibited a low wear-rate of 2.36 × 10 −7 g/N m with 0.48 as the COF...

... intermittent motion should not be ignored, and the pressure, temperature rise distribution and friction coefficient during the stop and start-up are fluctuated obviously. Under the condition of rough surface contact, the contact area will enter the mixed-EHL state during the stop and start-up. Shortening...

... Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 27 11 2022 28 02 2023 28 02 2023 08 03 2023 coatings friction indentation surface layers surface treatments wear Accepted Manuscript Not Copyedited Journal of Tribology...

...Wyatt Peterson; Farshid Sadeghi; Andreas Meinel; Hannes Grillenberger A test rig was designed and developed to assess the lubrication and friction of a single cylindrical roller and a conformal cage pocket. The roller was lubricated via oil bath in a sealed housing. Inner and outer bearing raceway...

... acceleration scenarios Fig. 6 Influence of different final speeds: ( a ) the shaft center, ( b ) eccentricity ratio, ( c ) the film thickness ratio λ , ( d ) coefficient of friction, and ( e ) the ratio of asperity contact load to external load Influence of different final speeds: (a) the shaft...

...Siyu Wang; Rupeng Zhu The mesh stiffness calculation of the planetary gear system with gear crack is investigated, and gear crack is modeled into end-face and addendum extended crack. Furthermore, the mesh stiffnesses are calculated under the effect of friction force obtained under the mixed...

... to the adhesion and abrasion mechanism generated between the contact surfaces. In this work, the ball-on-flat experiments were performed on stainless steel-420 versus 100cr6 friction pairs under dry, minimum quantity lubrication (MQL) and pool conditions. Then, the wear studies in terms of volume loss, profile...

.... The results show that the thermal effect and tooth friction can intensify the dynamic response of the gear transmission. The variation of rotational velocity and torque has a significant impact on the dynamic behaviors of DIGs, the change of tooth waist order parameters have little effect on its dynamic...

... design faces considerable challenge to reduce friction losses, oil consumption, blow-by, and wear. Surface coatings have received great attention in applications of automotive engine components due to their unique friction properties. In this study, an elastic–plastic contact model of rough surfaces...

... tests were performed at room temperature using a reciprocating tribometer at a sliding speed of 1 m min −1 against a 6-mm diameter ZrO 2 ball. When sliding in air, the friction coefficient of Cu-based BMG decreases with the applied loads (5 N, 10N, and 20 N), and the wear behavior is mainly affected...

...Vesa Saikko; Omar Morad; Raine Viitala The recently introduced four-station friction RandomPOD device was utilized in multidirectional, circular translation pin-on-disk (CTPOD) tests. The effect of sliding velocity on friction with orthopaedic bearing materials was studied. The tests included...

... are stationary and the commutator is moving parts of a motor. Traditionally, brush material is often carbon graphite because of its low friction, small wear-rate, and good conductivity. During operation, the brush not only needs to transmit current but also bears a certain load to ensure contact with the surface...

... friction and wear in many tribological applications. In the present paper, the effect of micro-texture on the tribological and lubricating performance of the important cylinder block/valve plate interface is studied experimentally and numerically. The experimental investigation was conducted on a disk...

... with the lowest coefficients of friction (0.142 ± 0.05) and wear-rate (0.3 ± 0.02 × 10 −4 mm 3 /Nm). Annealing resulted in alloys with good strength-ductility combinations due to appreciable γ′ precipitation enhancement. 1 Corresponding author. Email: ntholengn@tut.ac.za Email: nthape.mphasha...

... deposition modeling (FDM) 3D printer. The frictional behaviors of the printed components under oil lubrication were investigated on an end-face tribometer. The influence of spiral groove number, groove depth, and printing orientation on friction coefficients was discussed. The test results indicate...

...A. Tajdeen; A. Megalingam; M. Sivanesh Prabhu; M. Wasim Khan Influence of tungsten disulfide particles (WS 2 ) on the friction and wear behavior of Mg-AZ91 forms the objective of this work. Friction stir processing (FSP) has been used to fabricate FSP AZ91/WS 2 composite with various FSP passes...

...Debarghya Saha; Bhabani K. Satapathy Structurally dissimilar clay type silicate (tubular halloysite, platy montmorillonite, and acicular wollastonite) reinforced compression molded composites were fabricated with and without MgO. The thermo-mechanical and frictional performances of natural silicate...

... characteristics. The results revealed a better wear resistance and friction coefficient for recycled nanocomposites than pure magnesium. The enhanced wear resistance of recycled nanocomposites is attributed to the increased hardness and strength due to the Fe 3 O 4 nanoparticles and the turning induced...

...Yan Zhang; Shuhong Xiao The paper introduces a simplified structural model for the numerical investigation of bump-type foil bearings. This analytical model is based on an efficient nonlinear contact procedure with consideration of friction, small deformations, and elasticity. The bump foil...

.... The main objective of this study is to establish empirical equations that describe friction–-vibration interactions under dynamic (sliding) lubricated contacts. The effects of operating conditions on the tribological and vibration behaviors of lubricating oils having different viscosities were...