Fracture toughness of niobium/alumina interfaces: an analysis based on a micromechanical model

Autor:	J.A. Blume, J.Y. Shu, C.F. Shih
Rok vydání:	1995
Předmět:	Materials science General Engineering Niobium chemistry.chemical_element Fracture mechanics Cleavage (crystal) Plasticity Integral equation Fracture toughness chemistry visual_art visual_art.visual_art_medium Shear stress Ceramic Composite material
Zdroj:	Acta Metallurgica et Materialia. 43:4301-4307
ISSN:	0956-7151
DOI:	10.1016/0956-7151(95)00125-f
Popis:	The fracture toughness is predicted for an interface between niobium and alumina. It is assumed that voids at the triple points of grain junctions on the interface are the sites of cleavage decohesion. These voids are treated as microcracks and the plastic zone is modelled by a cohesive zone of constant shear stress. The interaction between the microcrack and the main crack is studied using an integral equation approach. The fracture toughness is calculated via various fracture criteria and compared against experimental data. Scatter in the experimental data is related to the variability in microdefect size.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ed9b1a76cc98d87bd51dc2c9199570ac https://doi.org/10.1016/0956-7151(95)00125-f Zobrazit plný text záznamu Full Text from ScienceDirect