Modeling of damage in an mmc with lamellar microstructure

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

Abstract

This chapter describes the stress fields in a single‐domain sample of metal‐ceramic composite containing multiple cracks in the ceramic layer. The domain size and the lamellae spacing are functions of the freeze‐casting parameters, whereas the ceramic content of the preform depends upon the initial composition of the suspension. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Crack widening also changes the distribution of the shear stresses in the vicinity of the crack tip and the crack tip region. The influence of crack distances and crack widening on the stress distribution in metalceramic composites with lamellar microstructure was studied using analytical and FE methods. FE model predicted the development of the compressive zone in between the cracks for small distances between the cracks. For small crack spacing, crack widening contributes to reduction of the maximum axial stress value at mid‐point between the cracks. Material behaviour of the metallic and ceramic layers was modelled as elastic.

Original languageEnglish
Title of host publicationDevelopments in Strategic Ceramic Materials II
Subtitle of host publicationA Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
EditorsWaltraud M. Kriven, Jingyang Wang, Yanchun Zhou, Dongming Zhu, Gustavo K. Costa, Manabu Fukushima, Andrew Gyekenyesi
PublisherAmerican Ceramic Society
Pages189-200
Number of pages12
Volume37
Edition7
ISBN (Electronic)9781119321811
ISBN (Print)9781119040439, 9781119321781
DOIs
Publication statusPublished - 1 Feb 2017
EventDevelopments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 - Daytona Beach, United States
Duration: 24 Jan 201629 Jan 2016

Publication series

NameCeramic Engineering and Science Proceedings
PublisherThe American Ceramic Society
ISSN (Electronic)1940-6339

Conference

ConferenceDevelopments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
CountryUnited States
CityDaytona Beach
Period24/01/1629/01/16

Keywords

  • metal‐ceramic composite
  • ceramic layer
  • axial stress value
  • crack distances
  • multiple cracks

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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  • Cite this

    Piat, R., Kashtalyan, M., & Guz, I. (2017). Modeling of damage in an mmc with lamellar microstructure. In W. M. Kriven, J. Wang, Y. Zhou, D. Zhu, G. K. Costa, M. Fukushima, & A. Gyekenyesi (Eds.), Developments in Strategic Ceramic Materials II: A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 (7 ed., Vol. 37, pp. 189-200). (Ceramic Engineering and Science Proceedings). American Ceramic Society. https://doi.org/10.1002/9781119321811.ch18