High Shear Rate Rheometry of Low-Viscosity Liquids.

Abstract

A new instrument called LODGE STRESSMETER was developed to measure the shear elasticity and viscosity of general and multigrade oils at high shear rates. This will make possible the measurements of normal stress difference N1 for values of shear rate up to 5 x 10 to the 5th power is temperature of 150 C. New surprising data show (as yet unexplained) the the N1 contribution to the minimum oil film thickness could be as much as 75% of the contribution from viscosity. This raises hope for the use of oils with lower viscosity, leading to improved fuel economy and an increase in the range of motorized vehicles.

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Document Details

Document Type
Technical Report
Publication Date
Nov 24, 1987
Accession Number
ADA188447

Entities

People

  • Arthur S. Lodge

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Elastic Properties
  • Electronics
  • Engineering
  • High Vacuum
  • Journal Bearings
  • Measurement
  • Mechanics
  • Military Research
  • Pressure Measurement
  • Scientists
  • Shear Flow
  • Shear Stresses
  • Stresses
  • Students
  • Viscometers
  • Viscosity

Readers

  • Mathematics or Statistics
  • Petroleum Engineering
  • Theoretical Analysis.