Environmental Effect on the Mechanical Strength of Glass
It is well known that the mechanical strength of glass is strongly influenced by the environment in which it is measured. For example, the strength measured in water is much lower than that in vacuum.1, 2 A similar strength reduction is observed, to a lesser extent, in various organic solvents.1–5 The strength reduction of glass in water is usually explained by the stress corrosion mechanism by Charles and Hillig.6 It is difficult, however, to invoke this stress corrosion mechanism for the effect in organic solvents which do not react with glasses.
KeywordsSurface Energy Mechanical Strength Surface Stress Elliptic Crack Crack Geometry
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