Multiple cracking in metal-ceramic laminates

Y. Huang*, H. W. Zhang, F. Wu

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

There have been observations showing that relatively thick metal layers in metal-ceramic laminates lead to the formation of multiple periodic cracks within a zone near a pre-crack, distributing damage and significantly enhancing the composite's toughness. Several models including linear elastic fracture mechanics and shear-lag analysis are developed in the present work in order to study the competition between multiple cracking and single-crack extension as damage modes. It is established that there is a critical thickness ratio for metal-ceramic layers above which multiple cracking dominates. Moreover, this critical thickness ratio is inversely proportional to the corresponding moduli ratio such that the competition between damage modes is governed by the metal-ceramic layer stiffness ratio. Plastic hardening of metals helps to activate the multiple-cracking damage mode, while plastic yielding does the opposite.

Original languageEnglish (US)
Pages (from-to)2753-2768
Number of pages16
JournalInternational Journal of Solids and Structures
Volume31
Issue number20
DOIs
StatePublished - Jan 1 1994

    Fingerprint

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

Cite this