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Keywords: films
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Journal Articles
Article Type: Research Papers
J. Tribol. April 2022, 144(4): 041803.
Paper No: TRIB-21-1142
Published Online: July 16, 2021
... result shows that, with consideration of texture effect, the friction torque of the bearing is reduced, there exists an optimal texture parameter for a given film thickness, under which the bearing has the maximum load-carrying capacity, no obvious change rule is found for the volume flowrate; with...
Journal Articles
Article Type: Research Papers
J. Tribol. March 2022, 144(3): 031701.
Paper No: TRIB-21-1065
Published Online: June 7, 2021
... ± 0.2 247 ± 2 CrN/CrCN/DLC 13.8 ± 0.3 281 ± 5 Archard's linear wear equation, Eq. (4) , used for materials with homogeneous structure (substrates) or for coated samples before the film perforation, allows to analytically determine the wear coefficient ( k ) and the relationship between...
Journal Articles
Article Type: Research Papers
J. Tribol. September 2021, 143(9): 091201.
Paper No: TRIB-19-1478
Published Online: January 8, 2021
... 11 2019 29 11 2020 29 11 2020 08 01 2021 boundary lubrication elastohydrodynamic lubrication films fluid film lubrication gears lubricants mixed lubrication tribological systems wear cooling heat transfer Modern jet engines for civil applications are...
Journal Articles
Article Type: Research Papers
J. Tribol. June 2021, 143(6): 061803.
Paper No: TRIB-20-1305
Published Online: October 27, 2020
... transition band, 0 < g ( θ ) < 1. The difference between this new switch function and Elrod and Adams’ switch function is shown in Fig. 2 , with β = 1 × 10 9 Pa. It can be illustrated that the new switch function becomes continuous in the intermediate state. When given certain film...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2021, 143(1): 011704.
Paper No: TRIB-20-1015
Published Online: July 28, 2020
...Zhaoli Liu; Hang Li; Jianliang Li; Jiewen Huang; Jian Kong; Dangsheng Xiong In this study, the Mo-alloyed HfN films were prepared by DC-magnetron sputtering and studied their tribological properties at 25–600 °C under dry friction conditions. The relationship between H/E value and tribological...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2021, 143(1): 011705.
Paper No: TRIB-20-1179
Published Online: July 28, 2020
... in the J ournal of T ribology . 24 04 2020 18 06 2020 18 06 2020 28 07 2020 oxy-nitriding sulfur nitriding nitriding tribo-chemistry zinc dialkydithiophosphate films friction hardness lubricant additives lubricants surface layers surface properties and...
Journal Articles
Article Type: Research Papers
J. Tribol. December 2020, 142(12): 122101.
Paper No: TRIB-20-1040
Published Online: June 19, 2020
...Sudesh Singh; Xinchun Chen; Chenhui Zhang; Rakesh Kumar Gautam; Rajnesh Tyagi; Jianbin Luo To explore the potential of directly grown multi-layer graphene as an agent in reducing friction and wear of steel on steel tribo-pair, multi-layer graphene films were synthesized on GCr15 steel in a low...
Journal Articles
Article Type: Research Papers
J. Tribol. February 2020, 142(2): 021801.
Paper No: TRIB-19-1070
Published Online: November 16, 2019
...Michael Branagan; Neal Morgan; Christopher Goyne; Roger Fittro; Robert Rockwell; Minhui He To compensate for an extremely heavy journal, jacking pockets can be added to the surface of pads in fluid film bearings. Jacking pockets can range in size and shape and will have an influence on the...
Journal Articles
Article Type: Research Papers
J. Tribol. December 2019, 141(12): 121701.
Paper No: TRIB-19-1186
Published Online: September 11, 2019
... Division of ASME for publication in the J ournal of T ribology . 25 04 2019 07 08 2019 16 08 2019 05 09 2019 journal bearings hydrostatic bearings hydrodynamic bearings porous metal bearings films hydrodynamic lubrication hydrostatic lubrication journal bearings...
Journal Articles
Article Type: Research-Article
J. Tribol. November 2018, 140(6): 061705.
Paper No: TRIB-17-1096
Published Online: June 13, 2018
...Jianzhong Cui; Jun Liu; Fangwei Xie; Cuntang Wang; Pengliang Hou The object of this work is to investigate the effect of the change of film pressure resulting from axial squeeze-film motion between driving and driven disks on the performance of hydroviscous drive (HVD). A simplified mathematical...
Journal Articles
Article Type: Research-Article
J. Tribol. November 2018, 140(6): 061703.
Paper No: TRIB-17-1305
Published Online: May 21, 2018
...Adolfo Delgado; Bugra Ertas The following paper focuses on an experimental and analytical study aimed at identifying the dynamic force coefficients of hydrostatic gas films for recessed flat plates. The motivation for the effort was brought upon by the necessity of generating more accurate models...
Journal Articles
Article Type: Research-Article
J. Tribol. September 2018, 140(5): 051501.
Paper No: TRIB-17-1211
Published Online: April 10, 2018
...David Nečas; Tomáš Jaroš; Kryštof Dočkal; Petr Šperka; Martin Vrbka; Ivan Křupka; Martin Hartl The present paper deals with an investigation of film formation in compliant lubricated contact. Despite these contacts can be found in many applications of daily life including both biological and...
Journal Articles
Article Type: Research-Article
J. Tribol. July 2018, 140(4): 041707.
Paper No: TRIB-17-1295
Published Online: March 30, 2018
...Ce Guo; XiJing Zhu; Jia Liu; Dan Zhang During ultrasonic vibration honing (UVH), a thin hydrodynamic oil film formed can seriously affect the cavitation effect in the grinding fluid, but the mechanism is still unclear now. Based on the hydrodynamics theory, a revised cavitation bubble model with...
Journal Articles
Article Type: Research-Article
J. Tribol. January 2018, 140(1): 011605.
Paper No: TRIB-15-1387
Published Online: August 2, 2017
...-BN can reduce coefficient of friction (COF) and improve antiwear property of composites under room temperature. Gr can accelerate the formation of transfer film under high temperature without sacrificing the wear resistant of composites. Transfer film of composites reinforced with Gr and h-BN...
Journal Articles
Article Type: Research-Article
J. Tribol. January 2018, 140(1): 011102.
Paper No: TRIB-16-1314
Published Online: July 21, 2017
... – 363 . 10.1115/1.2831309 [13] Guo , Z. , Hirano , T. , and Kirk , R. G. , 2005 , “ Application of CFD Analysis for Rotating Machinery—Part I: Hydrodynamic, Hydrostatic Bearings and Squeeze Film Damper ,” ASME J. Eng. Gas Turbines Power , 127 ( 2 ), pp. 445 – 451 . 10.1115...
Journal Articles
Article Type: Research-Article
J. Tribol. September 2017, 139(5): 051706.
Paper No: TRIB-16-1200
Published Online: May 26, 2017
...Wanjun Xu; Jiangang Yang This paper presents an approximate solution of Muijderman's model for compressible spiral grooved gas film. The approximate solution is derived from Muijderman's equations by Adomian decomposition method. The obtained approximate solution expresses the gas film pressure as...
Journal Articles
Article Type: Research-Article
J. Tribol. September 2017, 139(5): 051302.
Paper No: TRIB-16-1231
Published Online: May 26, 2017
... ,” Surf. Coat. Technol. , 160 ( 2–3 ), pp. 239 – 248 . 10.1016/S0257-8972(02)00415-2 [31] Gaevskaya , T. V. , Novotortseva , I. G. , and Tsybulskaya , L. S. , 1996 , “ The Effect of Boron on the Microstructure and Properties of Electrodeposited Nickel Films ,” Met. Finish. , 94 ( 6...
Journal Articles
Article Type: Research-Article
J. Tribol. May 2017, 139(3): 031301.
Paper No: TRIB-15-1462
Published Online: October 10, 2016
...Linmin Xu; Dekun Zhang; Kai Chen; Xuehui Yang; Qingliang Wang; Jianwei Qi Titanium alloys are widely used in the field of artificial joints, but their poor wear resistance limits their clinical application. Therefore, in this paper, the diamondlike carbon (DLC) film deposited on Ti6Al4V alloy...
Journal Articles
Article Type: Research-Article
J. Tribol. March 2017, 139(2): 021701.
Paper No: TRIB-15-1354
Published Online: August 11, 2016
...) gas film, nonlinear gas film force, and dynamic stiffness and damping coefficients are numerically calculated. The influences of different speeds, eccentricity ratios, and gas supply pressures on the dynamic characteristic coefficients of gas film are studied. The results show that the influence of...
Journal Articles
Article Type: Research-Article
J. Tribol. July 2016, 138(3): 031704.
Paper No: TRIB-15-1127
Published Online: May 4, 2016
...Nadim A. Diab; Issam A. Lakkis This paper presents direct simulation Monte Carlo (DSMC) numerical investigation of the dynamic behavior of a gas film in a microbeam. The microbeam undergoes large amplitude harmonic motion between its equilibrium position and the fixed substrate underneath. Unlike...