Fracture Behavior of Ice in Charpy Impact Testing,

Abstract

Specimens prepared from various types of ice without introducing excessive defects were tested at temperatures ranging from -2 to -190 C. These tests indicated slightly higher Charpy values at lower temperatures and in more highly dispersed material concentrations. Three modes of fracture occurred during testing. Depending on the temperature and the material composition, either of the first two modes, normal fracture or multiple fracture, will appear and will show a normal frequency distribution of Charpy values in each type of ice. The third mode, fracture from both ends, which frequently occurred in the NH4F doped ice, gave Charpy values two to five times higher than the mean value for normal fracture. It can, therefore, be concluded that certain types of doping can alter the mode of fracture, through which drastic modifications of impact resistance may be possible. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1980
Accession Number
ADA089920

Entities

People

  • Kazuhiko Itagaki
  • Richard L. Sabourin

Organizations

  • Cold Regions Research and Engineering Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Atmospheric Sciences
  • Cold Regions
  • Elastic Properties
  • Electric Charge
  • Electrical Properties
  • Engineering
  • Frequency
  • Ice
  • Internal Friction
  • Low Temperature
  • Materials
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Particles
  • Single Crystals
  • Temperature Coefficients

Readers

  • Polar and Arctic Studies
  • Reinforced Composite Materials
  • Wave Propagation and Nonlinear Chaotic Dynamics.