Journal ArticleDOI
Fracture Toughness of Freshwater Ice—Part I: Experimental Technique and Results
Larry J. Weber,Wilfrid A. Nixon +1 more
About:
This article is published in Journal of Offshore Mechanics and Arctic Engineering-transactions of The Asme.The article was published on 1996-05-01. It has received 23 citations till now. The article focuses on the topics: Fracture mechanics & Fracture toughness.read more
Citations
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Journal ArticleDOI
Calving processes and the dynamics of calving glaciers
TL;DR: In this article, a hierarchy of calving processes is defined to distinguish those that exert a fundamental control on the position of the ice margin from more localised processes responsible for individual calving events.
Journal ArticleDOI
Review Mechanical properties of ice and snow
TL;DR: In this article, the mechanical properties of ice and snow are reviewed and the strength and fracture toughness of snow are compared to those of ice, and the fracture-initiating flaw sizes in snow appear to correlate to the snow cell size.
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Experimental and theoretical fracture mechanics applied to Antarctic ice fracture and surface crevassing
M. A. Rist,Peter Sammonds,S. A. F. Murrell,Philip G. Meredith,C. S. M. Doake,Hans Oerter,K. Matsuki +6 more
TL;DR: In this article, a fracture initiation toughness, Kinit, was used to predict crevassing on the Filchner-Ronne Ice Shelf, based on fracture fracture data and an ice shelf flow model.
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The friction of ice on ice at low sliding velocities
TL;DR: In this paper, the authors measured the kinetic coefficient of friction for both granular ice and columnar columnar ice sliding against itself and found that the friction coefficient for both freshwater and saltwater ice was almost indistinguishable at higher temperatures (−3°C and −10°C), but saline ice had lower friction at lower temperatures.
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Fracture of Antarctic shelf ice
TL;DR: In this article, the authors investigated the fracture initiation toughness of Antarctic shelf ice core using two fracture mechanics test methods: the chevron-notched short-rod specimen loaded in tension and the round-bar sample loaded in three-point bending.
References
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Journal ArticleDOI
The failure of brittle solids containing small cracks under compressive stress states
Michael F. Ashby,S.D. Hallam +1 more
TL;DR: In this article, a model for the growth and interaction of cracks in brittle solids under compressive stress states is developed, where a critical stress is required to initiate crack growth: it depends on the initial crack length and orientation, the coefficient of friction and on the stress state.
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The brittle compressive fracture of ice
TL;DR: In this paper, the brittle compressive fracture under uniaxial loading of fresh-water, granular ice Ih has been studied, and the results are explained in terms of the frictional crack sliding-wing crack model.
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Preparation of polycrystalline ice specimens for laboratory experiments
TL;DR: A review of the nature of bubble formation in ice leads directly to the two factors which must be controlled in order to minimize gas bubble formation, and thus porosity as mentioned in this paper, which is a perennial problem in preparing fine grained ice specimens is the convenient production of low porosity material which is homogeneous, of random c-axis orientation and of controlled grain size.
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Crack stability in linear elastic fracture mechanics
TL;DR: In this article, a linear elastic fracture mechanics analysis of the conditions that produce crack instability is presented, where the authors show that if the initial crack extension causes the change in crack-tip resistance to be negative with respect to the change of cracktip loading, the crack will continue to propagate even though the loading agent remains stationary, and the crack is defined as unstable.
Effect of Grain Size on the Internal Fracturing of Polycrystalline Ice
TL;DR: In this paper, the effects of grain size of internal microfractures in polycrystalline ice were examined under uniaxial, constant load creep conditions at -5 C. The results indicated that the average crack size is approximately one-half the average grain diameter over the stated grain size range.