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Keywords: lubrication
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Journal Articles
Article Type: Research Papers
J. Tribol. May 2022, 144(5): 051603.
Paper No: TRIB-21-1177
Published Online: August 27, 2021
...A. Dindar; A. S. Chimanpure; A. Kahraman A tribo-dynamic model of ball bearings is proposed to predict their load-dependent (mechanical) power losses. The model combines (i) a transient, point contact mixed elastohydrodynamic lubrication (EHL) formulation to simulate the mechanics of the load...
Journal Articles
Article Type: Research Papers
J. Tribol. September 2021, 143(9): 091901.
Paper No: TRIB-20-1106
Published Online: January 13, 2021
... tribometer. The results show that TiC formed when Ti content in the coating was higher than 5.8 at% and the I D /I G ratios increased gradually with the increasing Ti content. Ti-DLC with 0.7 at% Ti had the highest H/E and H 3 /E 2 ratios and exhibited optimal tribological properties under lubrication...
Journal Articles
Article Type: Review Articles
J. Tribol. April 2021, 143(4): 040801.
Paper No: TRIB-20-1303
Published Online: October 5, 2020
... in the J ournal of T ribology . 03 07 2020 04 09 2020 04 09 2020 05 10 2020 surface texture lubrication hip implant artificial joints bio-tribology Total hip replacement (THR) is one of the most common surgical procedures in the United States, during which...
Journal Articles
Article Type: Research-Article
J. Tribol. July 2019, 141(7): 072101.
Paper No: TRIB-18-1271
Published Online: May 15, 2019
...Yufu Xu; Jingyuan Yu; Yinghui Dong; Tao You; Xianguo Hu As a novel layered material, black phosphorus (BP) shows unexpected characteristics in many aspects including tribological application. In this work, BP was prepared through ball milling from red phosphorus (RP). The boundary lubricating...
Journal Articles
Article Type: Research-Article
J. Tribol. October 2014, 136(4): 041801.
Paper No: TRIB-14-1005
Published Online: July 29, 2014
...Yeau-Ren Jeng; Yao-Huei Huang; Ping-Chi Tsai; Gan-Lin Hwang References [1] Mabery , C. F. , 1910 , “ Lubrication and Lubricats ,” Ind. Eng. Chem. , 169 , pp. 317 – 328 . 10.1021/ie50016a001 [2] Salomon , G. , Gee , A. W. J. D. , and Zaat , J. H. , 1964 , “ Methanol...
Journal Articles
Article Type: Research-Article
J. Tribol. January 2014, 136(1): 011706.
Paper No: TRIB-13-1121
Published Online: November 20, 2013
... is made available for the reader of the paper. The model and the associated numerical solution method have significant advantages over today's most frequently used cavitation algorithms, which are based on Elrod–Adams pioneering work. cavitation tribology lubrication linear complementarity...
Journal Articles
Article Type: Research-Article
J. Tribol. January 2014, 136(1): 011501.
Paper No: TRIB-12-1185
Published Online: September 23, 2013
.... Editor: Robert L. Jackson. 24 10 2012 21 07 2013 Determining friction is as equally essential as determining the film thickness in the lubricated contact, and is an important research subject. Indeed, reduction of friction in the automotive industry is important for both...
Journal Articles
Article Type: Research-Article
J. Tribol. July 2013, 135(3): 031102.
Paper No: TRIB-12-1177
Published Online: March 28, 2013
..., the determined γ value was less than unity. This means that the lubrication performance of grease remained at a similar level regardless of the deformation speed, as observed in the experimental work by Jung et al. [ 19 ]. Vegetable oils such as the corn oil introduced in this study show better oiliness than...
Journal Articles
Article Type: In-Brief
J. Tribol. April 2013, 135(2): 021502.
Paper No: TRIB-12-1058
Published Online: February 22, 2013
... of severe shear conditions leading to a shear-thinning response of the lubricant is also well-established [ 37–41 ], and often described by the Carreau expression (Eq. (2) ). Under low shear rates ( γ · ), Newtonian lubricants present a shear-independent viscosity ( μ 1 ), while at high rates...
Journal Articles
Article Type: Hydrodynamic Lubrication
J. Tribol. July 2012, 134(3): 031706.
Published Online: June 27, 2012
... lubrication hydrodynamic rheology non-Newtonian Magnetorheological (MR) fluids have been in existence for many decades, the first US patent being generally attributed to Rabinow in 1947 as discussed by Carlson [( 1 )]. Until quite recently, this technology has been called a ‘laboratory curiosity...
Journal Articles
Article Type: Micro-Nano Tribology
J. Tribol. April 2012, 134(2): 022001.
Published Online: April 12, 2012
...Bassem A. Kheireddin; Vinay Narayanunni; Mustafa Akbulut This work deals with the effect of surface roughness parameters on the frictional properties of nanowire-based lubrication systems (NBLS) across Cu surfaces with various topographies. The friction coefficient was discussed in the context...
Journal Articles
Article Type: Hydrodynamic Lubrication
J. Tribol. April 2012, 134(2): 021701.
Published Online: March 6, 2012
.... Compared with normal surfaces (316 stainless steel flat surfaces without any dimples or coatings), the frictional properties of such magnetic surfaces were investigated under different loads and sliding speeds when lubricated with ferrofluids using a friction test rig. Much attention was paid to the effect...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 042203.
Published Online: October 10, 2011
... lubrication regimes. However, papers focused on this particular aspect in face seals are rather scarce compared with those dealing with other popular sealing devices. The present study thus proposes a numerical flow model of mixed lubrication in mechanical face seals. It achieves this by evaluating...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 042101.
Published Online: October 10, 2011
... that existing valve train friction models do not reliably predict friction in boundary and mixed lubrication conditions and are not sensitive to lubricant chemistry. In these conditions, the friction losses depend on the tribological performance of tribofilms formed as a result of surface–lubricant additive...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 041701.
Published Online: October 4, 2011
...Vimala Manivasakan; Govindarajan Sumathi A theoretical investigation of the laminar squeeze flow of a couple-stress fluid between a flat circular static disk and an axisymmetric curved circular moving disk has been carried out using modified lubrication theory and microcontinuum theory...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 041001.
Published Online: August 9, 2011
...Dong Zhu; Q. Jane Wang Elastohydrodynamic Lubrication (EHL) is commonly known as a mode of fluid-film lubrication in which the mechanism of hydrodynamic film formation is enhanced by surface elastic deformation and lubricant viscosity increase due to high pressure. It has been an active...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031702.
Published Online: July 28, 2011
...Andreas Almqvist; John Fabricius; Andrew Spencer; Peter Wall Different averaging techniques have proved to be useful for analyzing the effects of surface roughness in hydrodynamic lubrication. This paper compares two of these averaging techniques, namely the flow factor method by Patir and Cheng (P...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031803.
Published Online: July 28, 2011
...Kyung-Hee Park; Brent Ewald; Patrick Y. Kwon Minimum quantity lubrication (MQL) has been used as an alternative solution for flood cooling as well as dry machining. However, the benefit of MQL is only realized in mild machining conditions as the heat generation during more aggressive machining...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031703.
Published Online: July 28, 2011
...Satish C. Sharma; E. Rajasekhar Nicodemus; Nathi Ram The present work aims to analytically study the performance of misaligned four-pocket, membrane compensated, hybrid journal bearing system operating with micropolar lubricant. In the present study, the flow characteristic of the lubricating oil...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 032201.
Published Online: July 21, 2011
... testing on steel coupons cooled by Cu-based MHEs. Low-profile Cu-based MHEs were fabricated and bonded to steel coupons, whose front faces were made to contact a crowned rotating steel ring, with and without oil lubrication. A series of tribological tests were conducted under different conditions...