Mesomechanics of multiple cracking of nanostructured gradient coatings under loading

Sergey Panin, Victor Panin, Alexey Panin, Victor Petrovich Sergeev, Evgenii Evtushenko, Dmitrii Moiseenko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The paper reports on theoretical and experimental investigations on deformation and fracture patterns of surface hardened materials. Simulation results on modeling processes of energy distribution and transformation at coating-substrate interface of a solid under loading by means of Stochastic Excitable Cellular Automata (SECA)-method are described. In doing so, deformable solid is considered as a multilevel system. The method allows taking into account self-organization of configuration perturbations for different levels of the system. An important role of stochastic modulation of an inelastic deformation at the interface in origin of inelastic deformation is discussed. It is shown experimentally that formation of toothed interface between nanostructured coating and substrate also results in formation of chessboard pattern of stress distribution there. This is manifested by multiple cracking of the coating with preferential crack orientation toward direction of maximum tangential stresses. This phenomenon could give rise to increase both strength and ductility of the surface hardened materials.

Original languageEnglish
Title of host publication17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures
Pages445-451
Number of pages7
Volume1
Publication statusPublished - 2008
Event17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17 - Brno, Czech Republic
Duration: 2 Sep 20085 Sep 2008

Other

Other17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
CountryCzech Republic
CityBrno
Period2.9.085.9.08

Keywords

  • Coatings
  • Cracking
  • Interface
  • Mesomechanics
  • Multilevel approach

ASJC Scopus subject areas

  • Civil and Structural Engineering

Fingerprint Dive into the research topics of 'Mesomechanics of multiple cracking of nanostructured gradient coatings under loading'. Together they form a unique fingerprint.

Cite this