Compressive and Shear Strengths of Fragmented Ice Covers-a Laboratory Study.

Abstract

The results of an experimental study on the compressive and shear strengths of floating, fragmented ice covers are presented. The compressive strength of prestrained covers and of covers submitted to an approximately constant preload was found to be essentially equal to that of unstrained, non-preloaded covers. The compressive strength (sigma cr) became independent of the velocity (Vc) at which the load was applied when Vc became greater than 0.01 ft/sec, and for Vc > 0.01 the ratio of strength to cover thickness (t) and the shear strength (tau) became, approximately constant independent of both vc and t. Differences observed between the present study and that of a previous similar investigation led to the conclusion that small variations in the air and/or water temperatures can have a large effect on sigma cr, and sigma cr/t, probably due to their affecting the formation of cohesive bonds between the ice particles within the ice covers. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1977
Accession Number
ADA045246

Entities

People

  • J. C. Tatinclaux
  • S. T. Cheng

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Air Platforms
  • Autonomy

DTIC Thesaurus Topics

  • Accuracy
  • Army Corps Of Engineers
  • Cold Regions
  • Compressive Strength
  • Engineering
  • Equations
  • Load Cells
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Particles
  • Shear Strength
  • Shear Tests
  • Stress Strain Relations
  • Stresses
  • Thickness

Readers

  • Human-Computer Interaction (HCI).
  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.