Correlation between fracture toughness, work of fracture and fractal dimensions of Alumina-mullite-zirconia composites

Autor(es)

Sérgio Francisco dos Santos ^[1] ; José de Anchieta Rodrigues ^[2]

Afiliação do(s) autor(es)

^[1] University of São Carlos. Department of Materials Engineering - Brasil

^[2] University of São Carlos. Department of Materials Engineering - Brasil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 6, n. 2, p. 219-226, 2003-06-00.

Resumo

The purpose of this work is to show the correlation between the fractal dimension, D, and mechanical properties such as work of fracture, gammawof, and fracture toughness, K Ic. Alumina-mullite-zirconia composites were characterized by the slit-island method, SIM, to obtain values of D and its fractional part, D*. The fracture surface roughness was also evaluated using a cyclic voltametric method. It will be shown that there is a positive experimental dependency of gammawof on D* and that there is not an evident correlation between K Ic and D*. (AU)

• Processo FAPESP: 96/01988-2 - Aplicação do conceito de fractais para análise do processo de fratura de materiais cerâmicos
• Beneficiário: Sérgio Francisco dos Santos
• Modalidade de apoio: Bolsas no Brasil - Mestrado