THE PHOTOELASTIC UNIDIRECTIONAL STRESSMETER. A BOREHOLE ROCK STRESS GAUGE

Abstract

The development, calibration and use of a simple and robust, unidirectional borehole rock stressmeter is described. Readout is in terms of the photoelastic isochromatic fringe order in a glass cylinder built into the meter. The meter, which is preloaded in the borehole, is intended for both stress change and absolute rock stress measurements.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1969
Accession Number
AD0697752

Entities

People

  • Ivor Hawkes

Organizations

  • Cold Regions Research and Engineering Laboratory

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Boreholes
  • Calibration
  • Cells
  • Civil Engineering
  • Climate Change
  • Cold Regions
  • Compound Semiconductors
  • Engineering
  • Load Cells
  • Materials
  • Measurement
  • Mechanics
  • Modulus Of Elasticity
  • New Hampshire
  • Rock Mechanics
  • Transducers

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Geodesy
  • Materials Science (Mechanical Engineering).