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Small-scale ice indentation tests with variable structural compliance

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/j.coldregions.2012.12.006
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0003-4568-1252; Search for: ; Search for: ; Search for:
FormatText, Article
Subjectcompressive ice failure; ice-induced vibration; structural feedback; crushing; high pressure zone; damage and fracture
Abstract
Small-scale ice indentation tests have been performed on confined polycrystalline ice specimens in order to simulate a single, stationary, high pressure zone. These tests aid in the understanding of the mechanics associated with ice failure processes and the formation of high pressure zones during ice-structure interaction. Temperature has a significant effect on the failure mode of the ice and microstructural modification of the damaged layer. Cyclic loading patterns, at frequencies as high as 250 Hz, have been linked to crushing and extrusion of ice associated with high pressure zone failures. Structural compliance was observed to aid in the development of cyclic loading patterns and the frequency has been observed to have a linear dependence on structural stiffness. A linear relationship was also observed between the indentation speed and the resulting cyclic loading frequency. A layer of damaged ice adjacent to the indenter was observed after each test and was found to contain both densely microfractured and recrystallized ice. The extent of microcracking and recrystallization present in the layer was found to depend on both the indentation rate and temperature.
Publication date
PublisherElsevier
In
  • Cold Regions Science and Technology 88, no. C (30 December 2012): 2–9.
NoteTests were conducted using the materials testing machine housed in the cold room facilities at the National Research Council-Institute for Ocean Technology (NRC-IOT).
LanguageEnglish
Peer reviewedYes
NRC publication
This is a non-NRC publication

"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.

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Record created2025-06-09
Record modified2025-06-10
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