Publication detail
Understanding the tensile strength of ceramics in the presence of small critical flaws
MARTIN, É. LEGUILLON, D. ŠEVEČEK, O. BERMEJO, R.
English title
Understanding the tensile strength of ceramics in the presence of small critical flaws
Type
journal article in Web of Science
Language
en
Original abstract
The effect of small critical flaws on the strength of polycrystalline ceramic materials is analyzed with the help of an initiation criterion combining both a stress and an energy conditions. If the size of the defect is smaller than the characteristic material length, numerical predictions reveal that the defect (either sharp or blunt) has no effect on the strength. This result is in a good agreement with experimental results obtained from the strength measurements of ceramic materials with controlled flaws. Combining two fracture tests after introducing flaws with controlled sizes enables to identify the fracture parameters of the ceramic material.
English abstract
The effect of small critical flaws on the strength of polycrystalline ceramic materials is analyzed with the help of an initiation criterion combining both a stress and an energy conditions. If the size of the defect is smaller than the characteristic material length, numerical predictions reveal that the defect (either sharp or blunt) has no effect on the strength. This result is in a good agreement with experimental results obtained from the strength measurements of ceramic materials with controlled flaws. Combining two fracture tests after introducing flaws with controlled sizes enables to identify the fracture parameters of the ceramic material.
Keywords in English
Crack nucleation; Coupled criterion; Finite fracture mechanics; Tensile strength; Ceramics
Released
19.09.2018
Publisher
Elsevier
Location
Netherlands
ISSN
0013-7944
Volume
201
Number
1
Pages from–to
167–175
Pages count
9
BIBTEX
@article{BUT149056,
author="Éric {Martin} and Dominique {Leguillon} and Oldřich {Ševeček} and Raul {Bermejo},
title="Understanding the tensile strength of ceramics in the presence of small critical flaws",
year="2018",
volume="201",
number="1",
month="September",
pages="167--175",
publisher="Elsevier",
address="Netherlands",
issn="0013-7944"
}