Dual-axis video observations of ice crushing utilizing high-speed video for one perspective

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Conference18th International Conference on Port and Ocean Engineering Under Arctic Conditions, 26-30 June 2005, Potsdam, New York
AbstractRectangular thick sections (1 cm thickness) of lab-grown monocrystalline ice have been confined between two thick Plexiglas plates and crushed at -10º C from one edge face at a rate of 1 cm/s using a transparent Plexiglas platen (1 cm thickness) inserted between the plates. The transparent plates and platen permitted side viewing of the ice behavior during crushing using high-speed video and also a top view of the ice/platen contact zone through the crushing platen using regular video. Zones of intact ice at the ice/platen interface were evident in the visual records and these were shaped by cracks and spalls. The production and flow of liquid in a thin layer at the intact ice/platen interface was also evident. A novel method was used to obtain pressure measurements at the ice/platen interface. Pressure values for the intact ice contact zones were high (at least 20 MPa) and for the crushed ice the pressure varied from low (~1 MPa) to high values (~20 MPa) depending on its thickness over intact ice. Also, wetting from liquid produced at the intact ice/ platen interface probably softened and reduced the pressure in pulverized ice. Features of the load and pressure data are discussed in the context of the visual observations.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
NRC number6196
NPARC number8894921
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Record identifierca8327a6-70ab-4035-9d59-04b69ca42f20
Record created2009-04-22
Record modified2016-05-09
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