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Experimental Investigation of Compressive Failure of Truncated Conical Ice Specimens

[+] Author Affiliations
Kashfi B. Habib, Ian J. Jordaan, Stephen Bruneau

Memorial University of Newfoundland, St. John’s, NL, Canada

Rocky S. Taylor

Memorial University of Newfoundland, St. John’s, NL, CanadaC-CORE Centre for Arctic Resource, St. John’s, NL, Canada

Paper No. OMAE2014-24184, pp. V010T07A044; 8 pages
doi:10.1115/OMAE2014-24184
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 10: Polar and Arctic Science and Technology
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4556-1
  • Copyright © 2014 by ASME

abstract

A series of small-scale ice indentation tests has been carried out to study the compressive failure of polycrystalline ice during indentation and explore the link between various parameters that influence the ice failure processes. In total, twenty-eight experiments were completed using ice specimens having a truncated conical geometry to investigate the nature of crushing, spalling and high pressure zones. Variables considered in this series include: grain size, indenter shape, indentation rate, temperature, and taper angle. Two grain size ranges (0–4 mm and 4–10+ mm) were considered, along with two indenter shapes (a flat plate and a spherical indenter). Indentation rates of 0.1 mm/s, 1 mm/s and 10 mm/s have been used for these tests. Experiments were conducted at temperatures of −10°C and −5°C and three geometric configurations (with taper angles of 13°, 21°, 30°) have been considered. Crushing and spalling events have been observed from the regular and high-speed videos, synchronized with tactile pressure sensor data and load cell data. To observe the microstructural modification, horizontal and vertical thin-sections of the damaged ice adjacent to the indenter have been collected and examined. Ice particles were collected from the testing area following each experiment to observe the influence of different factors. Particle size distributions and post-experiment image analyses were also conducted after each test. The effect of the variables on observed failure processes and associated loads are discussed.

Copyright © 2014 by ASME
Topics: Ice , Failure

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