Author(s): Robert Gerard
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Keywords: No Keywords
Abstract: A simple penetration test is proposed to provide an index of ice strength. The penetration involved is that of a fastener fired into the ice sheet using a commercially available power tool. The correlation between fastener penetration and ice strength has been established from compression tests carried out in the field over the past three winters. In the paper, these tests are described, the correlation presented and analysed, and the application of the test discussed. The penetration is most sensitive to strength for weak ice and the test is carried out in-situ. These features make it attractive for the study of breakup or melt phenomena, when the ice is weak and in-situ tests are almost mandatory. In addition, the test has proved to be simple, rapid, inexpensive and reasonably accurate, and the equipment rugged and portable. It may therefore also prove useful for an easy and objective assessment of the strength of even 'strong' ice in otherwise difficult circumstances.
Year: 1975