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Effect of Molecular Structure of Lubricating Oil on Sound Velocity and Bulk Modulus


Affiliations
1 Department of Chemistry, V.S.S.D. College, Kanpur-208002, India
 

Theoretical computation of sound velocity and their bulk modulus for many lubricating oils having various applications in machinery and daily lives at different ranges of temperature over the entire concentration range has been done from the measured data of Mia and Ohno. An attempt has also been envisaged to predict the molecular interactions and molecular structure involved therein and also to establish relationship among sound velocity, surface tension, adiabatic compressibility and their bulk modulus. It is found that theoretical results for sound velocity agreed well within the experimental precision when compared with experimental data. These properties are helpful in predicting the group of the lubricating oil of which they belong.


Keywords

Lubricating Oil, Surface Tension, Sound Velocity, Bulk Modulus, Molecular Interactions.
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  • Wills J.G., Lubrication Fundamentals, Marcel Dekker, New York (1980) 241.
  • Winer W.O., Lubricants, Tribological Technology Volume II, Senholzi, P.B., Eds., Martinus Mijhoff Publishers, The Hegue, (1982), 407-467.
  • Bhushan B., Tribology and mechanics of magnetic storage devices, Springer, New York. (1990), 48-52.
  • Jones W.R. Jr., Properties of perfluoropolyethers for space applications, Tribol. T. 38 (1995), 557-564.
  • Liang J.C. and Helmick L.S., Tribochemistry of a PFPAE fluid on M-50 surfaces by FTIR spectroscopy, Tribol. T. 39 (1996), 705-709.
  • Keck P.H. and Horn W.V., The Surface tension of liquid silicon and germanium, Phys. Rev. 91 (1953), 512-513.
  • Macleod D.B., On a relation between surface tension and density, T. Farady Soc. 19 (1923), 38-41.
  • Auerbach N., Surface tension and speed of sound, Experienti. 4 (1948), 473-374.
  • Mia S. and Ohno N., Prediction of pressure-viscosity coefficient of lubricating oils based on sound velocity, Lubr. Sci. 21 (2009), 343- 354.
  • Laplace P.S., On the velocity of sound through air and water, Ann. Chim. (Rome) 3 (1816), 238-241.
  • Wood A.B., A Text book of sound, Third Ed., Bell and Sons, London (1964).
  • Kagathara V.M. and Parsania P.H., Sound velocity and thermodynamic parameters of chloro epoxy resins of bisphenol-C solutions in chlorinated and aprotic solvents at 35°C and 40°C, Eur. Polym. J. 37 (2001), 1373-1377.
  • Bhushan B., Principles and Applications of Tribology, John Wiley & Sons, New York, (1999).

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  • Effect of Molecular Structure of Lubricating Oil on Sound Velocity and Bulk Modulus

Abstract Views: 256  |  PDF Views: 1

Authors

S. K. Singh
Department of Chemistry, V.S.S.D. College, Kanpur-208002, India
V. S. Gangwar
Department of Chemistry, V.S.S.D. College, Kanpur-208002, India
R. K. Shukla
Department of Chemistry, V.S.S.D. College, Kanpur-208002, India

Abstract


Theoretical computation of sound velocity and their bulk modulus for many lubricating oils having various applications in machinery and daily lives at different ranges of temperature over the entire concentration range has been done from the measured data of Mia and Ohno. An attempt has also been envisaged to predict the molecular interactions and molecular structure involved therein and also to establish relationship among sound velocity, surface tension, adiabatic compressibility and their bulk modulus. It is found that theoretical results for sound velocity agreed well within the experimental precision when compared with experimental data. These properties are helpful in predicting the group of the lubricating oil of which they belong.


Keywords


Lubricating Oil, Surface Tension, Sound Velocity, Bulk Modulus, Molecular Interactions.

References