Author(s): Philip R. Johnson
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Abstract: E, the modulus of elasticity of sea ice, was studied using some of Peyton's published data. His tests were of small specimens of sea ice tested in direct compression and direct tension. The compression data shows that all data can be thrown together and E is expressed as a simple linear function of ultimate strength. The tension data shows two separate E-strength relationships. For ice which can fail on the brine-basal plane, a strong linear relationship exists between E and strength. All other orientations have an essentially constant E unaffected by strength. E in tension may be as much as an order of magnitude greater than E in compression. The problem of evaluating beam or plate tests and ring tensile tests is now seen to be more complex than had been previously assumed.
Year: 1972