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Keywords: viscosity
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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
... visualization flow visualization fluid friction gears viscosity VINNOVA 10.13039/501100001858 Energy- and installation-efficient electrified drive system Since a couple of decades ago, the oil churning losses have been a cause for concern in powertrain systems. The main reason...
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
...: christophe.changenet@ecam.fr Email: fabrice.ville@insa-lyon.fr Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 11 02 2021 28 05 2021 28 05 2021 18 06 2021 planetary gears splash lubrication power losses lubricants viscosity...
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
... surface treatments viscosity Dragonflies are known as one of the most efficient insects with particular high flight performance. Unlike other insects, dragonflies can individually control the two pairs of wings (forewings and hindwings) to obtain different attack angles and wing profiles during...
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
... clutches fluid friction rheology surfaces tribological systems viscosity Taper converging and diverging radial groove discs have the same order of distribution as the radial groove disc and higher magnetic flux distribution than other radial textured groove discs, due to the sudden change...
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
... curves of the grease sample at different temperatures in terms of ( a ) shear stress and ( b ) shear viscosity versus shear rate. The dash lines in ( a ) represent various types of yield stress and their critical shear rates, which the last two of them correspond to DST locations pointed by arrows ( b...
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. Fig. 9 Limiting load of wear...
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...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Tribol. March 2018, 140(2): 021701.
Paper No: TRIB-16-1300
Published Online: September 29, 2017
... responses and their solution manifolds are obtainable and stretch out with selections of pad preload, pivot offset, and lubricant viscosity so that the periodic doubling bifurcations, saddle node bifurcations, and corresponding local stability are reliably determined by searching parameter sets. In case...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2018, 140(1): 011403.
Paper No: TRIB-17-1042
Published Online: August 2, 2017
... other physical quantities, on the small wavelength truncation of roughness, which is hard to define with some physical argument, rather than just as a best fit fitting free parameter. Friction Interface Sliding Surface roughness Viscosity Asperities 01 02 2017 27 04 2017...