Journal ArticleDOI
Tribological Behavior of Some Candidate Advanced Space Lubricants
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TLDR
In this article, the performance of a variety of space lubricants was compared under boundary and elastohydrodynamic lubrication (EHL) conditions, and the types of fluids studied were naphthenic mineral oil, paraffinic mineral oils, polyalphaolefin, and silahydrocarbon.Abstract:
Performance of a variety of space lubricants was compared under boundary and elastohydrodynamic lubrication (EHL). The types of fluids studied were naphthenic mineral oil, paraffinic mineral oil, polyalphaolefin, and silahydrocarbon. The silahydrocarbon and the polyalphaolefin lubricants exhibited lower traction under similar conditions. A specific additive package increased the traction of the polyalphaolefin. Volatility characteristics of some of these fluids were also studied. Presented at the 45th Annual Meeting In Denver, Colorado May 7–10, 1990read more
Citations
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For space applications
TL;DR: Nguyen et al. as mentioned in this paper measured the wear properties of a series of liquid lubricants, including multiply alkylated cyclopentanes (MACs), linear perfluoropolyalkylethers (PFPAEs), and four silahydrocarbons (a tri-,a tetra-and two pentas).
Journal ArticleDOI
Lubrication properties of polyalphaolefin and polysiloxane lubricants: Molecular structure-tribology relationships
TL;DR: In this article, the rheological properties, elastohydrodynamic film thickness, and friction coefficients of several commercially available polyalphaolefin (PAO) and polydimethylsiloxane (PDMS)-based lubricants were investigated to assess relationships between molecular structure and lubricant performance.
Journal ArticleDOI
Preparation, characterization and tribological properties of polyalphaolefin with magnetic reduced graphene oxide/Fe3O4
TL;DR: In this article, magnetic reduced graphene oxide/Fe3O4 composites were synthesized via chemical co-precipitation method, and they were characterized by field-emission transmission electron microscopy (FETEM), X-ray diffraction (XRD) and Raman spectrometry and magnetic property measurement system (MPMS), respectively.
Journal ArticleDOI
Elastohydrodynamic lubrication properties and friction behaviors of several ester base stocks
He Yifeng,He Yifeng,Thomas J. Zolper,Pinzhi Liu,Yuzhen Zhao,Yuzhen Zhao,Xingliang He,Xuejin Shen,Xuejin Shen,Hongwei Sun,Qinghua Duan,Qian Wang +11 more
TL;DR: In this article, the authors report a series of studies on the lubricant properties, elastohydrodynamic film thickness, and coefficients of friction of several commercially available ester base stocks.
Book ChapterDOI
Inertial and Frictional Effects in Dynamic Compression Testing
TL;DR: In this paper, the effects of macro-inertia on the observed specimen response are discussed. But the effects due to any internal structure of, for example, a foam will not be considered.
References
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Journal ArticleDOI
Ball bearing lubrication: The elastohydrodynamics of elliptical contacts
TL;DR: In this paper, the history of ball bearings is examined, taking into account rollers and the wheel in the early civilizations, the development of early forms of rolling-element bearings in the classical civilizations and the emergence of the precision ball bearing, scientific studies of contact mechanics and rolling friction.
Book
Advanced Dynamics of Rolling Elements
P. K. Gupta,B. Paul +1 more
TL;DR: In this article, the authors present an analytical model of the ADORE system using a simple static model and a dynamic model based on a mixture of geometric and kinematic models.
Journal ArticleDOI
CRC Handbook of Lubrication (Theory and Practice of Tribology), Volume II, Theory and Design
Journal ArticleDOI
The influence of molecular structure on the frictional behaviour of lubricating fluids
TL;DR: In this paper, the chemical structure or constitution of fluid lubricants and their friction characteristics under elastohydro dynamic conditions were found to be strongly dependent on the chemical structures of the fluid and on operational parameters.
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