Artigo
Fractal characterization of brittle fracture in ceramics under mode I stress loading
Fecha
2010-07-15Registro en:
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. Lausanne: Elsevier B.V. Sa, v. 527, n. 18-19, p. 4847-4850, 2010.
0921-5093
10.1016/j.msea.2010.04.014
WOS:000279300900045
Autor
Universidade Estadual Paulista (Unesp)
Instituto de Pesquisas Energéticas e Nucleares (IPEN)
Resumen
The self-affine behavior of Brazilian disk test titanium oxide specimens for K(Ic) measurement was investigated from 3D elevation maps obtained at regular intervals following crack extension. The bifractal approach could be adopted due to the self-affine characteristics of crack propagation under linear elastic regime, determining fractal dimensions associated to micro- (D(T)) and macro- (D(S)) resolution scales. It was found that fractal dimension data were dependent on crack front positions, and could not be related to fracture toughness. (C) 2010 Elsevier B.V. All rights reserved.