Fractal characterization of brittle fracture in ceramics under mode I stress loading

Horovistiz, Ana Lucia; de Campos, Kamila Amato; Shibata, Silvia; Prado, Camila C. S.; de Oliveira Hein, Luis Rogerio

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/9365

Title:

Fractal characterization of brittle fracture in ceramics under mode I stress loading

Author(s):

Institution:

Universidade Estadual Paulista (UNESP)
Instituto de Pesquisas Energéticas e Nucleares (IPEN)

ISSN:

0921-5093

Sponsorship:

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Sponsorship Process Number:

FAPESP: 09/08760-9
FAPESP: 08/01788-2
FAPESP: 01/09664-1
CNPq: 307271/2007-2
CNPq: 471749/2008-7

Abstract:

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.

Issue Date:

15-Jul-2010

Citation:

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.

Time Duration:

4847-4850

Publisher:

Elsevier B.V. Sa

Keywords:

Ceramics
Light microscopy
Fracture

Source:

http://dx.doi.org/10.1016/j.msea.2010.04.014

URI:

Access Rights:

Acesso restrito

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/9365

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