An Approach to Determining Non-Linear Lubricant Viscoelastic Properties

Paper #:
  • 972857

Published:
  • 1997-10-01
Citation:
Arcoumanis, C. and Ostovar, P., "An Approach to Determining Non-Linear Lubricant Viscoelastic Properties," SAE Technical Paper 972857, 1997, https://doi.org/10.4271/972857.
Pages:
14
Abstract:
By using empirical and semi-empirical relationships previously reported in the literature, non-linear viscoelastic properties of a number of lubricants have been determined from their linear viscoelastic behaviour, as measured by an oscillatory rheometer. Similarly to polymeric viscosity index improved (VII) lubricants, non-polymeric mineral blends were also shown to display viscoelastic behaviour.A general equation is suggested that allows the first normal stress difference which characterises the viscoelastic behaviour of lubricants to be expressed as a function of the shear viscosity.
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