On the Thermodynamic Theory of the Strength of Solids:
1. Thermodynamic Characteristics of Crack

A. I. Rusanov

Mendeleev Center, St. Petersburg State University, Universitetskaya nab. 7, St. Petersburg, 199034 Russia

Received June 13, 2007

Abstract—Since the current theory of the strength of solids is based on the study of crack behavior, the con-
sideration of failure processes is preceded by the analysis of the surface characteristics of a crack such as dis-
joining pressure and thermodynamic surface and linear tensions. The dependence of linear tension on the cur-
vature radius of the crack frontal line is calculated as applied to different mechanisms of the crack growth using
dispersion forces as an example.

DOI: 10.1134/S1061933X08010134

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