Author(s): Anthony J. Gow
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Keywords: No Keywords
Abstract: In this paper we present results of small beam tests performed on simulated lake ice corresponding in structure to the two major ice types, S1 and S2, encountered in lake ice covers. In these tests a combination of cantilever and simply supported beams was used to ascertain the dependence of flexural strength of the ice on its structure and temperature. It was found that macrocrystalline (S1) ice and columnar (S2) ice exhibit significant differences in bending strength and that substantial stress concentrations exist at the fixed corners of cantilever beams. Differences in response of S1 and S2 ice to bending forces clearly reflect variations in grain size, crystal orientation, temperature, and temperature gradient in the simulated ice, and these factors must be carefully considered when interpreting results of tests of the flexural strength of natural ice covers.
Year: 1984