Publication result detail

Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses

NÁHLÍK, L.; MAJER, Z.; ŠTEGNEROVÁ, K.; HUTAŘ, P.

Original Title

Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses

English Title

Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses

Type

Paper in proceedings (conference paper)

Original Abstract

A micro-crack propagation in particulate ceramic based composite was studied using finite element method (FEM). Subcritical crack growth (SCG) was numerically simulated under complex load conditions (mechanical loading and loading by internal residual stresses). The effect of residual stresses on the crack propagation was studied. Two-dimensional computational model of particulate ceramic composite with material properties corresponding to low temperature co-fired ceramics (LTCC) was developed. The results indicate that the presence of residual stresses significantly reduces values of stress intensity factor in the vicinity of composite surface and the direction of residual stresses around the particles contributes to the micro-crack deflection from the particles. The time to failure of the composite under mechanical loading was determined. Results obtained contribute to a better understanding of the role of residual stresses during micro-crack propagation in ceramic particulate composites.

English abstract

A micro-crack propagation in particulate ceramic based composite was studied using finite element method (FEM). Subcritical crack growth (SCG) was numerically simulated under complex load conditions (mechanical loading and loading by internal residual stresses). The effect of residual stresses on the crack propagation was studied. Two-dimensional computational model of particulate ceramic composite with material properties corresponding to low temperature co-fired ceramics (LTCC) was developed. The results indicate that the presence of residual stresses significantly reduces values of stress intensity factor in the vicinity of composite surface and the direction of residual stresses around the particles contributes to the micro-crack deflection from the particles. The time to failure of the composite under mechanical loading was determined. Results obtained contribute to a better understanding of the role of residual stresses during micro-crack propagation in ceramic particulate composites.

Keywords

Ceramic Particulate Composite, Residual Stress, Sub-Critical Crack Growth

Key words in English

Ceramic Particulate Composite, Residual Stress, Sub-Critical Crack Growth

Authors

NÁHLÍK, L.; MAJER, Z.; ŠTEGNEROVÁ, K.; HUTAŘ, P.

RIV year

2019

Released

02.01.2018

Publisher

Trans Tech Publications Inc.

Location

Zürrich, Switzerland

ISBN

978-3-0357-1168-4

Book

Advances in Fracture and Damage Mechanics XVI

ISBN

1662-9795

Periodical

Key Engineering Materials (web)

Volume

754

Number

1

State

Swiss Confederation

Pages from

107

Pages to

110

Pages count

4

URL

https://www.scientific.net/KEM.754.107

BibTex

@inproceedings{BUT141409,
  author="Luboš {Náhlík} and Zdeněk {Majer} and Kateřina {Štegnerová} and Pavel {Hutař}",
  title="Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses",
  booktitle="Advances in Fracture and Damage Mechanics XVI",
  year="2018",
  journal="Key Engineering Materials (web)",
  volume="754",
  number="1",
  pages="107--110",
  publisher="Trans Tech Publications Inc.",
  address="Zürrich, Switzerland",
  doi="10.4028/www.scientific.net/KEM.754.107",
  isbn="978-3-0357-1168-4",
  issn="1662-9795",
  url="https://www.scientific.net/KEM.754.107"
}