Nonlinear Correlated Interaction of Mesodefects and Transition to Macrofracturing

Albert Leksowskij; B.L. Baskin; A.P. Tishkin; A. Abdumanonov

doi:10.4028/www.scientific.net/SSP.137.9

Paper Titles

Committees

Photos

Preface

Computer Simulation of the Interaction of Junction Disclinations in Nanomaterials with Grain Boundary Vacancies
p.1

Recent Advances in Determination of the Logarithmic Decrement and the Resonant Frequency in Low-Frequency Mechanical Spectroscopy
p.15

High-Temperature Mechanical Relaxation due to Dislocation Motion inside Dislocation Networks
p.21

High Temperature Mechanical Loss Spectrum of 3Y-TZP Zirconia Reinforced with Carbon Nanotubes or Silicon Carbide Whiskers
p.29

Low Temperature Kinetics of In-Cd Solid Solution Decomposition
p.35

HomeSolid State PhenomenaSolid State Phenomena Vol. 137Nonlinear Correlated Interaction of Mesodefects...

Nonlinear Correlated Interaction of Mesodefects and Transition to Macrofracturing

Abstract:

The following experimental data are presented and discussed: a) the explosion-like nucleation of micro- (meso) cracks; b) the dependence of the scale of local “microcatastrophe” on the relation between the released strain energy and the dissipative properties of the nearest environment; c) the determinative influence of the dissipative properties on the rate of redistribution of local stresses. The presented data evidence that every event of defect nucleation that takes place at either micro- or mesoscale level in the heterogeneous solid examines the energy absorbtion properties of the whole system. Future localization of the macroscopical failure is of “accidental type”, that is results from random, active formation of the ensemble of micro- and mesocracks in different localities as a consequence of the decrease of the dissipative capability of surrounding volume.