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Keywords: bearing friction
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Journal Articles

Effect of Thread and Bearing Friction Coefficients on the Self-Loosening of Preloaded Countersunk-Head Bolts Under Periodic Transverse Excitation

Amro M. Zaki, Sayed A. Nassar, Xianjie Yang
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2010, 132(3): 031601.
https://doi.org/10.1115/1.4001621
Published Online: June 4, 2010
... several system variables, this study is focused on investigating the effect of thread and bearing friction coefficients on the loosening of fasteners with coarse and fine threads. Model prediction of the self-loosening behavior is experimentally validated. Substituting Eqs. 4 , 5 into Eq. 3...
View Article titled, Effect of Thread and <span class="search-highlight">Bearing</span> <span class="search-highlight">Friction</span> Coefficients on the Self-Loosening of Preloaded Countersunk-Head Bolts Under Periodic Transverse Excitation
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Topics: Bearings, Excitation, Fasteners, Friction, Thread, Torque
Journal Articles

Effect of Engine Operating Conditions and Lubricant Rheology on the Distribution of Losses in an Internal Combustion Engine

Riaz A. Mufti, Martin Priest
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2009, 131(4): 041101.
https://doi.org/10.1115/1.3176988
Published Online: September 25, 2009
... indicated mean effective pressure method and the valve train friction was measured using specially designed camshaft pulleys. Total engine friction was measured using pressure-volume diagram and brake torque measurements, whereas engine bearing friction was measured indirectly by subtracting the components...
View Article titled, Effect of Engine Operating Conditions and Lubricant Rheology on the Distribution of Losses in an Internal Combustion Engine
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Topics: Engines, Friction, Lubricants, Pistons, Bearings, Temperature, Valves, Trains, Lubrication, Manufacturing
Journal Articles

Effect of Coating Thickness on the Friction Coefficients and Torque-Tension Relationship in Threaded Fasteners

Sayed A. Nassar, Amro M. Zaki
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021301.
https://doi.org/10.1115/1.3085941
Published Online: March 9, 2009
...Sayed A. Nassar; Amro M. Zaki This paper experimentally investigates the effect of coating thickness on the thread, bearing friction coefficients, and torque-tension relationship in threaded fasteners, as well as an investigation into the effect of coating thickness on surface roughness properties...
View Article titled, Effect of Coating Thickness on the Friction Coefficients and Torque-Tension Relationship in Threaded Fasteners
Open the PDF for Effect of Coating Thickness on the Friction Coefficients and Torque-Tension Relationship in Threaded Fasteners in another window
Topics: Bearings, Coating processes, Coatings, Fasteners, Friction, Thread, Torque, Tension