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TitleThe flexural strength of partially refrozen cracks in Sea Ice
Publication TypeConference Paper
Year of Publication2004
AuthorsLanghorne, P.J., and Haskell T.G.
Conference NameProceedings of the International Offshore and Polar Engineering Conference
Date Published2004
KeywordsBending strength, Brine fraction, Brines, Cantilever beams, Cracks, Crystal orientation, Freezing, Land-fast, Ocean currents, Refreezing time, Refrozen cracks, Sea ice
AbstractFlooded cracks in first year sea ice refreeze rapidly, their physical and mechanical properties being governed by heat flow to the ice-air interface and laterally to the surrounding ice sheet Here we investigate the crack strength by first finding the flexural strength of the pristine ice sheet using an in situ cantilever beam test. An artificial crack was then formed at the hinge of the beam and allowed to refreeze. The flexural strength of the ice containing the partially refrozen crack was then tested, and examined as a function of refreezing time and of crack width. The results are interpreted in relation to the brine fraction within the partially refrozen crack. Copyright © 2004 by The International Society of Offshore and Polar Engineers.

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