Publication detail
Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses
NÁHLÍK, L. MAJER, Z. ŠTEGNEROVÁ, K. HUTAŘ, P.
English title
Lifetime Assessment of Particulate Ceramic Composite with Residual Stresses
Type
conference paper
Language
en
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 in English
Ceramic Particulate Composite, Residual Stress, Sub-Critical Crack Growth
Released
02.01.2018
Publisher
Trans Tech Publications Inc.
Location
Zürrich, Switzerland
ISBN
978-3-0357-1168-4
ISSN
1662-9795
Book
Advances in Fracture and Damage Mechanics XVI
Volume
754
Number
1
Pages from–to
107–110
Pages count
4
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",
volume="754",
number="1",
month="January",
pages="107--110",
publisher="Trans Tech Publications Inc.",
address="Zürrich, Switzerland",
isbn="978-3-0357-1168-4",
issn="1662-9795"
}