Publication detail

Strategies to Optimize the Strength and Fracture Resistance of Ceramic Laminates

BERMEJO, R. CHLUP, Z. ŠESTÁKOVÁ, L. ŠEVEČEK, O. DANZER, R.

Original Title

Strategies to Optimize the Strength and Fracture Resistance of Ceramic Laminates

Type

book chapter

Language

English

Original Abstract

Layered ceramics, compared to conventional monolithic ceramics, are good choices for highlyloaded structural applications because they exhibit greater fracture resistance, higher strengths and better mechanical reliability (i.e. they are flaw tolerant materials). The use of tailored residual compressive stresses in the layers is a key parameter to adjust these properties. In this work ceramic laminates are analyzed which have internal residual compressive stresses. The most important factors having influence on the strength and fracture resistance of these laminates are discussed. A fracture mechanics analysis is employed to estimate the crack growth resistance of the material as a function of the crack length. It is found that the proper selection of a suitable strain mismatch (responsible for the generation of residual stresses), volume ratio of the layer materials and thickness and distribution of individual layers are crucial to achieve a high fracture resistance and/or a high lower limit (threshold) for strength in ceramic laminates. Design guidelines to avoid cracking of layers associated with high residual stresses are also provided. Design criteria to optimize strength and fracture resistance in advanced ceramics to be used in engineering applications are established.

Keywords

fracture resistance; ceramic laminates; monolithic ceramics; fracture mechanics analysis; residual stresses

Authors

BERMEJO, R.; CHLUP, Z.; ŠESTÁKOVÁ, L.; ŠEVEČEK, O.; DANZER, R.

RIV year

2012

Released

19. 11. 2012

Publisher

John Wiley & Sons, Inc.

Location

Hoboken, NJ, USA

ISBN

9781118205884

Book

Mechanical Properties and Performance of Engineering Ceramics and Composites VII

Edition

kniha

Edition number

1

Pages from

163

Pages to

174

Pages count

12

BibTex

@inbook{BUT96698,
  author="Raul {Bermejo} and Zdeněk {Chlup} and Lucie {Malíková} and Oldřich {Ševeček} and Robert {Danzer}",
  title="Strategies to Optimize the Strength and Fracture Resistance of Ceramic Laminates",
  booktitle="Mechanical Properties and Performance of Engineering Ceramics and Composites VII",
  year="2012",
  publisher="John Wiley & Sons, Inc.",
  address="Hoboken, NJ, USA",
  series="kniha",
  edition="1",
  pages="163--174",
  isbn="9781118205884"
}