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Keywords: viscosity
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2024, 146(10): 104102.
Paper No: TRIB-24-1002
Published Online: June 13, 2024
... thrust bearing eccentric load oil cavity shapes lubrication performance fluid film lubrication hydrodynamic lubrication thrust bearings viscosity Multi-pad structures and separated friction pairs of the static and dynamic thrust bearing provide low friction and operational stability under...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2024, 146(10): 104601.
Paper No: TRIB-23-1411
Published Online: June 6, 2024
... 09 04 2024 06 06 2024 Graphical Abstract Figure water lubrication secondary lubricating medium oil supply setting oil supply rate CFD simulation hydrodynamic lubrication journal bearings lubricants mixed lubrication viscosity Water has never been ruled out...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2023, 145(11): 114103.
Paper No: TRIB-23-1043
Published Online: August 29, 2023
... . 05 02 2023 15 06 2023 15 06 2023 29 08 2023 gearbox churning losses torque measurements experiments CFD lattice-Boltzmann method oil splashing high-speed visualization flow visualization fluid friction gears viscosity VINNOVA 10.13039/501100001858...
Journal Articles
Publisher: ASME
Article Type: Review Articles
J. Tribol. May 2023, 145(5): 050801.
Paper No: TRIB-22-1268
Published Online: January 19, 2023
...Anupam Bhandari The viscosity of ferrofluid has a vital role in liquid sealing of the hard disk drives, biomedical applications as drug delivery, hyperthermia, and magnetic resonance imaging. The theoretical expressions for ferrofluid viscosity and its limitation are presented in detail...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. May 2023, 145(5): 054401.
Paper No: TRIB-22-1292
Published Online: January 5, 2023
... 2023 grease lubrication rheology seals viscosity Science and Engineering Research Board 10.13039/501100001843 EMR/2017/03440 Magnetorheological grease (MRG) comes under the category of smart materials which is capable of reversibly altering its rheology under...
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 2023, 145(1): 012201.
Paper No: TRIB-21-1578
Published Online: October 7, 2022
...Wei Wang; Wenhan Zhao; Qiang Ma; Ange Nsilani Kouediatouka; Hui Zhang; Guangneng Dong; Meng Hua; Hon-Yuen Tam The synergistic effect of surface texturing and lubricants with various viscosity and polarity properties is an attractive and unexplored topic. In this study, surface texturing...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 2023, 145(1): 011601.
Paper No: TRIB-22-1060
Published Online: September 30, 2022
...Robert J. Sadinski; Carl H. Hager, Jr.; William M. Hannon The relative volume and falling body viscosity of a common high-pressure rheology reference lubricant, di-(2-ethylhexyl) sebacate (DEHS), are presented. Relative volume measurements up to 300 MPa are completed with a piezo-bellows relative...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2021, 143(11): 111805.
Paper No: TRIB-21-1086
Published Online: June 18, 2021
... angle (deg) 20 − Helix angle (deg) 0 − Average radius (mm) − 70 Table 2 Physical properties of the oils used in the study Oil number Density (kg/m 3 ) Kinematic viscosity at 40 °C (cSt) Kinematic viscosity at 100 °C (cSt) 1 837 at 30 °C 41 7.4 2 920...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. December 2021, 143(12): 121806.
Paper No: TRIB-21-1059
Published Online: May 18, 2021
... γ ˙ = shear rate ɛ = emissivity η = apparent viscosity ρ = density τ = shear stress τ yd = yield stress ɸ = volume fraction ψ = sphericity ɷ = the rotational speed of the disc The datasets generated and supporting...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. May 2021, 143(5): 051103.
Paper No: TRIB-20-1540
Published Online: February 26, 2021
... curve describing relationship between C f and Re P, Δ P = air pressure and pressure difference, respectively (Pa) Ra = the average deviation of the roughness irregularities from the mean line Re = Reynolds number μ = viscosity coefficient (Pa · s) ρ = air...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. September 2021, 143(9): 091801.
Paper No: TRIB-20-1377
Published Online: December 22, 2020
... rate for MRF 80 and ( b ) dynamic viscosity versus shear rate for MRF 80 (a) Flow curves of shear stress versus shear rate for MRF 80 and (b) dynamic viscosity versus shear rate for MRF 80 Figure 6( a ) shows shear stress with shear rate increases with increasing magnetic flux density...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. June 2021, 143(6): 061901.
Paper No: TRIB-20-1312
Published Online: October 27, 2020
...Thomas J. Zolper; Scott Bair; Kyle Horne The ASME Pressure-Viscosity Report was a seminal publication on high pressure-viscosity and density supervised by the ASME Research Committee on Lubrication, sponsored by dozens of industries, and undertaken by Harvard University using high-pressure...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. March 2021, 143(3): 031803.
Paper No: TRIB-19-1508
Published Online: September 21, 2020
...Dongil Shin; Jongin Yang; Xiaomeng Tong; Junho Suh; Alan Palazzolo Traditional analysis of journal bearings assumed a constant viscosity which simplified the solutions for static and dynamic characteristics and responses. Today's high-performance machinery requires more accurate models wherein...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. March 2020, 142(3): 034501.
Paper No: TRIB-19-1217
Published Online: November 19, 2019
.... , and McKinley , G. H. , 2017 , “ Thermokinematic Memory and the Thixotropic Elasto-Viscoplasticity of Waxy Crude Oils ,” J. Rheol. (N. Y. N. Y). , 61 ( 3 ), pp. 427 – 454 . 10.1122/1.4978259 [39] Da Cruz , F. , Chevoir , F. , Bonn , D. , and Coussot , P. , 2002 , “ Viscosity...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Tribol. February 2019, 141(2): 021802.
Paper No: TRIB-18-1154
Published Online: October 11, 2018
...Scott Bair; Samuel Flores-Torres Understanding the pressure and shear dependence of viscosity is essential to an understanding of the mechanisms of film forming and friction in concentrated contacts. The blending of different molecular mass polyalphaolefins (PAOs) may permit the formulator...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Tribol. November 2018, 140(6): 061801.
Paper No: TRIB-17-1439
Published Online: May 28, 2018
... of polyvinylpyrrolidone caused the improvement in dynamic viscosity at lower shear rates and a significant change of viscosity in low temperatures. An increased value of the yield point of the tested lubricating compositions after introduction of the additive was also observed. The measure for antiscuffing properties...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. May 2018, 140(3): 034501.
Paper No: TRIB-17-1253
Published Online: January 16, 2018
...Peter Christiansen; Niels Schmidt Hansen; Martin Thomas Overdahl Lund; Jon Spangenberg; Niels Bay This paper describes the construction and testing of a simple, experimental tool setup that enables determination of the pressure–viscosity relationship for high viscosity oils. Comparing...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Tribol. May 2018, 140(3): 031701.
Paper No: TRIB-17-1120
Published Online: October 23, 2017
... condition. The traditional opinion that effective viscosity decreases with increasing temperature cannot completely explain this phenomenon. In this study, the air entrainment effect is introduced and evaluated using computational fluid dynamics (CFD). CFD results considering air entrainment, viscous...