FRACTURE-STRESS IN COMPRESSION OF TIB2 - STRAIN-RATE SENSIBILITY AND MODELING

Authors
LAMAISON M FARRE J COSCULLUELA A COLLOMBET F
Citation
M. Lamaison et al., FRACTURE-STRESS IN COMPRESSION OF TIB2 - STRAIN-RATE SENSIBILITY AND MODELING, Journal de physique. IV, 7(C3), 1997, pp. 999-1004
Citations number
10
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
7
Issue
C3
Year of publication
1997
Pages
999 - 1004
Database
ISI
SICI code
1155-4339(1997)7:C3<999:FICOT->2.0.ZU;2-Y
Abstract
The aim of this study consists in developing a simple model which coul d evaluate the fracture stress, in uniaxial compressive loadings, of b rittle materials, like ceramics. We first prove that fracture stress o f a polycrystalline TiB2 is independent of strain rate. Then, we prese nt a modeling of this stress based on fracture mechanics principles an d which parameters are the toughness, the porosity rate, the pores siz e and their shape, i.e. material intrinsic values.