Acoustic Emissions from Polycrystalline Ice,

Abstract

The acoustic emission response from fine-grained polycrystalline ice subjected to constant compressive loads was examined. A number of tests were conducted with the nominal stress ranging from 0.8 to 3.67 MPa at a temperature of -5 C. The acoustic emission response was recorded and the data are presented with respect to time and strain. The source of acoustic emissions in ice is considered in terms of the formation of both microfractures and visible fractures that develop without catastrophic failure of the ice. A model to describe the acoustic emission response is developed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1982
Accession Number
ADA119632

Entities

People

  • David M. Cole
  • William F. St. Lawrence

Organizations

  • Cold Regions Research and Engineering Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Cold Regions
  • Creep
  • Crystals
  • Engineering
  • Equations
  • Frequency
  • Grain Boundaries
  • Grain Size
  • Materials
  • Mechanical Properties
  • Mechanics
  • Single Crystals
  • Steady State
  • Strain Rate
  • Stress Tests
  • Stresses

Readers

  • Acoustical Oceanography.
  • Materials Science (Mechanical Engineering).
  • Mechanical Engineering/Mechanics of Materials.