Fracture characterization of ceria partially stabilized zirconia using the GMTSN criterion
Document Type
Article
Publication Date
1-1-2018
Abstract
Ceria stabilized tetragonal zirconia polycrystal (CeO2-TZP) is one of the zirconia-based materials which is reported to have high fracture toughness and strong resistance to low temperature aging degradation (LTAD). Owing to the brittle behavior of CeO2-TZP, its fracture properties can be estimated using the concept of linear elastic fracture mechanics (LEFM). In this paper, the generalized maximum tangential strain (GMTSN) criterion is applied to predict the fracture initiation angles and the onset of fractures of CeO2-TZP disk specimens under mixed mode I/II conditions. It is found that the inclusion of T-term, the first non-singular term in strain solution, in the GMTSN criterion would yield significantly improved predictions of the experimental data obtained for CeO2-TZP disk specimens and reported in the literature.
Keywords
Ceramics, CeO2-TZP, Fracture properties, Strain-based fracture criterion
Divisions
fac_eng
Publication Title
Engineering Fracture Mechanics
Volume
199
Publisher
Elsevier