Crack Tip Morphology of Slowly Growing Cracks in Glass |
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Authors: | Stéphane Hénaux François Creuzet |
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Affiliation: | Laboratoire CNRS/Saint-Gobain "Surface du Verre et Interfaces," F-93303 Aubervilliers, France |
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Abstract: | We present atomic force microscopy (AFM) observations of crack tips in glass during subcritical propagation. These have been obtained by means of an AFM sample holder which has been specially designed to propagate indentation cracks in glass plates. Crack tips in soda–lime–silica glass are always preceded by a few nanometers deep deformation. In vitreous silica, no other surface deformation than the crack itself could be detected. For both materials, the crack opening is found to largely exceed the elastic solution. |
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Keywords: | crack tip morphology glass |
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