Kinetic fracture of glass at the nanometer scale

In the field of fracture, it is generally accepted that the v(G) curves (crack velocity vs. mechanical-energy-release rate) are somewhat characteristic of the material in a given environment. However, the scatter of experimental data suggest that the crack tip motion may not be as simple and possibl...

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Bibliographic Details
Published in:Journal of materials science letters 1997-06, Vol.16 (12), p.1008-1011
Main Authors: HENAUX, S, CREUZET, F
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Glasses
Structure, analysis, properties
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Summary:In the field of fracture, it is generally accepted that the v(G) curves (crack velocity vs. mechanical-energy-release rate) are somewhat characteristic of the material in a given environment. However, the scatter of experimental data suggest that the crack tip motion may not be as simple and possibly depends upon the loading history. This work investigates the relevance of the v(G) approach at the nanometer scale. It is concluded that the relevance of the v(G) master curves should be questioned, at least in the slow crack propagation regime of brittle materials. In particular, transient phenomena have been found, which makes it necessary to take into account the time scale of each experiment.
ISSN:0261-8028
DOI:10.1023/A:1018502002972