Results 81 to 90 of about 14,758 (224)
Lubrication of high-speed, large bore tapered-roller bearings [PDF]
The performance of 120.65-mm- (4.75-in.-) bore tapered-roller bearings was investigated at shaft speeds up to 15,000 rpm (18,000 DN). Temperature distribution and bearing heat generation were determined as a function of shaft speed, radial and thrust ...
Parker, R. J., Signer, H. R.
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Journal of Measurement Science and Instrumentation, 2015 A series of aviation lubrication oil 50-1-4Φsamples were prepared with different RP-3content,and then these samples were analyzed by Fourier transform mid-infrared spectrometer（FTIR）.The infrared region of 805-755cm-1 was selected as quantitative area ...
ZONG Ying +3 more
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Performance tests with a 4.75 inch bore tapered-roller bearings at high speeds [PDF]
The tapered-roller bearings were tested at speeds to 15,000 rpm which results in a cone-rib tangential velocity of 130 m/sec. (25,500 ft/min). Lubrication was applied either by jets or directly to the cone-rib, augmented with jets.
Pinel, S. I., Signer, H. R.
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Evaporation-triggered microdroplet nucleation and the four life phases of an evaporating Ouzo drop
, 2016 Evaporating liquid droplets are omnipresent in nature and technology, such as in inkjet printing, coating, deposition of materials, medical diagnostics, agriculture, food industry, cosmetics, or spills of liquids.
Diddens, Christian +5 more
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Analytical and experimental spur gear tooth temperature as affected by operating variables [PDF]
A gear tooth temperature analysis was performed using a finite element method combined with a calculated heat input, calculated oil jet impingement depth, and estimated heat transfer coefficients.
Akin, L. S., Townsend, D. P.
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Advances in Mechanical EngineeringThe lubrication performance of cylindrical roller bearings is directly linked to their operational accuracy and lifespan. Therefore, experimental testing is essential before deployment.
Chenfei Ma +4 more
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Case Studies in Thermal EngineeringGiven the urgent demand for lightweight design and energy conservation in aviation engines, this study investigates the impact of gear pair operating parameters on the heat transfer characteristics of the lubrication system.
Yankun Hou +3 more
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Effect of lubricant jet location on spiral bevel gear operating temperatures [PDF]
An experimental study was conducted to determine the effect of lubricant jet location on spiral bevel gear bulk temperatures. Transient surface temperatures were also measured.
Handschuh, Robert F.
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LubricantsThe temperature field distribution of high-speed double-helical gears under oil injection lubrication is investigated by obtaining heat flux density and convective heat transfer coefficients through theoretical calculations and CFD (computational fluid ...
Xiaozhou Hu, Yangmei Yuan, Jie Chen
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Investigation into micromilling processes for micro thin walls made of Ti-6Al-4V material by customized polycrystalline diamond end mill [PDF]
Mechanical SciencesTitanium alloy, as a material with high specific strength, is prone to severe tool wear during machining, leading to deterioration in the surface quality of the workpiece and presenting significant machining challenges.
Y. Li, X. Cheng
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