Common features of fracture process on various scale levels

摘要

In this paper an attempt was made to distinguish between some of the general features of the fracture process occurring in various scale levels in different materials. The kinetics of plastic zones near a crack tip and damage accumulation at multiple fractures of metallic specimens are considered. The kinetic diagram of damage accumulation allows an estimate of threshold and transition characteristics of damage evolution. Analysis of seismic activity process in the earth crust has made it possible to suppose that the general features of damage evolution are preserved on the global scale level of fracture process development.