Apparatus design evolution and supporting experiments for a novel technique to study ice crushing

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Conference18th International Symposium on Ice, 28 August - 1 September 2006, Sapporo, Japan
Subjectice crushing process; novel crushing apparatus
AbstractIce crushing experiments similar to Gagnon and Daley (2005) have been repeated at twice the former high-speed video rate (1000 images/s) and with the intention of eliminating in-plane fractures that occurred in all previous tests. Rectangular thick sections (1 cm thickness) of lab-grown monocrystalline ice were confined between two thick Plexiglas plates and crushed at ?10oC from one edge face at a rate of 1 cm/s using a transparent Plexiglas platen (1 cm thickness) inserted between the plates. Visual data were recorded from the side using the high-speed video and vertically through the platen using regular video. It was concluded that the system was too compliant to prevent the in-plane fractures, however, one test did show near full-thickness intact ice. From this test unambiguous pressure measurements were obtained for the intact and pulverized ice at the ice/platen interface utilizing the system?s novel pressure sensor. As in the previous report, the production and flow of liquid in a thin layer at the intact ice/platen interface was evident. The apparatus was then modified significantly to reduce its compliance and more tests were conducted with the eventual desired result that in-plane fractures in the ice were eliminated. This confirmed that the apparatus is capable of yielding visual data of a 2-D slice of ice during crushing as though it was part of a larger piece of ice.
Publication date
PublisherNational Research Council Canada. Institute for Ocean Technology
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
NRC number6437
NPARC number8894888
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Record identifier8fb04f4e-96f0-4e13-8da9-c9c1d9f11ee0
Record created2009-04-22
Record modified2016-10-04
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