Analysis of visual data from medium scale indentation experiments at Hobson's Choice Ice Island

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DOIResolve DOI: http://doi.org/10.1016/S0165-232X(98)00012-3
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TypeArticle
Journal titleCold Regions Science and Technology
Volume28
Issue1
Pages4558; # of pages: 14
SubjectIce indentation; In situ video; High pressure zones; Ice spalls
AbstractMedium scale ice indentation experiments were performed at Hobson's Choice Ice Island using an indentor outfitted with a window and video camera so that the ice behavior could be observed in situ. The video images revealed high pressure zones of relatively intact ice, surrounded by crushed ice, that bore most of the load. The load data exhibited a sawtooth pattern which the video records showed was due to spalling of ice away from the contact area. This determined the shape of the high pressure zones. All damage to the ice, and actual movement of the indentor into the ice, occurred during the sharp drops in the sawtooth load data. Pressures in the high pressure zones, determined from the visual records and load data, agreed with the highest pressures measured by sensors on the indentor face (40 to 60 MPa range).
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
IdentifierIR-1998-02
NRC number5791
NPARC number8895318
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Record identifier4eadf50f-0228-47b7-b9fe-9f195df949a6
Record created2009-04-22
Record modified2016-05-09
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