Creep and Fracture of Ice and Surface Strain Measurements on Glaciers and Sea Ice
Author | : Douglas Jocelyn Goodman |
Publisher | : |
Total Pages | : 150 |
Release | : 1977 |
Genre | : Glaciers |
ISBN | : |
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Author | : Douglas Jocelyn Goodman |
Publisher | : |
Total Pages | : 150 |
Release | : 1977 |
Genre | : Glaciers |
ISBN | : |
Author | : Erland M. Schulson |
Publisher | : Cambridge University Press |
Total Pages | : 403 |
Release | : 2009-04-30 |
Genre | : Science |
ISBN | : 0521806208 |
The first complete account of the physics of the creep and fracture of ice, for graduates, engineers and scientists.
Author | : Samuel C. Colbeck |
Publisher | : Elsevier |
Total Pages | : 479 |
Release | : 2012-12-02 |
Genre | : Science |
ISBN | : 0323148891 |
Dynamics of Snow and Ice Masses gives an outline of snow and ice studies with an emphasis on essential properties and processes. The monograph also treats the dynamical aspects of snow and ice masses. The text covers topics such as the flow and temperature of ice sheets and shelves, the numerical modeling of ice-sheet changes; the structure of glaciers, the experimental creep behavior of ice, flow law of glacier ice, and advance and retreat of glaciers. Also covered are topics such as sea ice - the physics of its growth, drift, and decay; iceberg deterioration, sources, drift, and drift patterns; and freshwater ice growth, motion, and decay. The book is recommended as a textbook for graduate-level students of snow and ice studies and as reference for climatologists.
Author | : P. Tryde |
Publisher | : Springer Science & Business Media |
Total Pages | : 392 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 3642814344 |
In the programme of the symposium was written: "The International Union of Theoretical and Applied Me chanics has taken the initiative to organize the sympo sium. As the name of IUTAM implies, the organization brings forward achievements within the field of theore tical mechanics for application in science and engineer ing. According to the rules of IUTAM that only invited persons can attend, all lecturers and participants have been ap pOinted by the members of the scientific committee. To facilitate contact among the attending persons, it has been decided to restrict the total number to 85 persons including the lecturers. Only one session is planned, making it possible for everybody to attend all lectures. Most scientists and engineers have realized that the knowledge attained by extensive basic research is essen tial in order to solve technological problems. In the process of acquiring this knowledge we often fail to un derstand that scientific progress is only achieved by two main principles: (1) By studying the scientific litera ture and applying or improving the theories in order to predict behaviour and forces correctly, or (2) by re jecting existing theories and developing new ways to cope with the problem, resulting in a more differenti ated and, hopefully, more exact theory. Ice seems to be a simple material, but it is in fact so complex and strange that it is only in the latest dec ades that we have come to know some of the natural laws governing its behaviour.
Author | : David M. Cole |
Publisher | : |
Total Pages | : 92 |
Release | : 1986 |
Genre | : Acoustic emission |
ISBN | : |
This work presents the results of a study to examine the effects of grain size of internal microfractures in polycrystalline ice. Laboratory-prepared specimens were tested under uniaxial, constant-load creep conditions at -5 C. Grain size ranged from 1.5 to 6.0 mm. This range of grain size, under an initial creep stress of 2.0 MPa, led to a significant change in the character of deformation. The finest-grained material displayed no internal cracking and typically experienced strains of 10 to the minus 2nd power at the minimum creep rate epsilon. The coarse-grained material experienced severe cracking and a drop in the strain at epsilon min to approximately 4x10 to the minus 3rd power. Extensive post-test optical analysis allowed estimation of the size distribution and number of microcracks in the tested material. These data led to the development of a relationship between the average crack size and the average grain size. Additionally, the crack size distribution, when normalized to the grain diameter, was very similar for all specimens tested. The results indicate that the average crack size is approximately one-half the average grain diameter over the stated grain size range. A dislocation pileup model is found to adequately predict the onset of internal cracking. The work employed acoustic emission techniques to monitor the fracturing rate occurred. Other topics covered in this report include creep behavior, crack healing, the effect of stress level on fracture size and the orientation of cracked grains. Theoretical aspects of the grain size effect on material behavior are also given.
Author | : Ryszard Staroszczyk |
Publisher | : Springer |
Total Pages | : 334 |
Release | : 2018-12-29 |
Genre | : Science |
ISBN | : 3030030385 |
This book presents the concepts and tools of ice mechanics, together with examples of their application in the fields of glaciology, climate research and civil engineering in cold regions. It starts with an account of the most important physical properties of sea and polar ice treated as an anisotropic polycrystalline material, and reviews relevant field observations and experimental measurements. The book focuses on theoretical descriptions of the material behaviour of ice in different stress, deformation and deformation-rate regimes on spatial scales ranging from single ice crystals, those typical in civil engineering applications, up to scales of thousands of kilometres, characteristic of large, grounded polar ice caps in Antarctica and Greenland. In addition, it offers a range of numerical formulations based on either discrete (finite-element, finite-difference and smoothed particle hydrodynamics) methods or asymptotic expansion methods, which have been used by geophysicists, theoretical glaciologists and civil engineers to simulate the behaviour of ice in a number of problems of importance to glaciology and civil engineering, and discusses the results of these simulations. The book is intended for scientists, engineers and graduate students interested in mathematical and numerical modelling of a wide variety of geophysical and civil engineering problems involving natural ice.
Author | : E. M. Schulson |
Publisher | : |
Total Pages | : 417 |
Release | : 2014-05-14 |
Genre | : Ice |
ISBN | : 9780511540752 |
The first complete account of the physics of the creep and fracture of ice for graduates, engineers and scientists.