Piezo-Optic Properties of Liquids under High Pressure.

Abstract

A high pressure liquid cell interferometer to measure the variation of refractive index of liquids with pressure to 14 kbars has been constructed. The amount of liquid needed is only 3 c.c. Interferometric measurements have been carried out on twelve liquids with widely varying molecular size, shape and structure. These studies show (1) first experimental proof that the Eulerian frame-indifferent analogue strain E is a more useful strain measure than the Lagrangian strain, (2) Keane's equation of state best describes each and all liquids studied, (3) change in refractive index vs. E is linear for all liquids, even though the volume strain involved is as high as 33%. This conclusion appears to be valid for all the liquids studied thus far. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 15, 1978
Accession Number
ADA055448

Entities

People

  • K. Vedam
  • Pichet Limsuwan

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Bulk Modulus
  • Equations
  • Equations Of State
  • Freezing
  • High Pressure
  • Hydrostatic Pressure
  • Interferometers
  • Materials
  • Measurement
  • Mechanics
  • Methanols
  • Phase Transformations
  • Physics
  • Precision
  • Refractive Index
  • Reliability

Readers

  • Materials Science and Engineering.
  • Mechanical Engineering/Mechanics of Materials.
  • Spectroscopy.