Accession Number : ADA183208

Title :   Small-Scale Crack Bridging and the Fracture Toughness of Particulate-Reinforced Ceramics,

Corporate Author : HARVARD UNIV CAMBRIDGE MA DIV OF APPLIED SCIENCES

Personal Author(s) : Budiansky, Bernard ; Amazigo, John C ; Evans, Anthony G

PDF Url : ADA183208

Report Date : Jun 1987

Pagination or Media Count : 34

Abstract : Theoretical analyses of small-scale bridging of crack surfaces by elastic-ideally plastic springs are presented and applied to the study of the fracture toughness of ceramics reinforced by small particles. The dependence of toughening on particle size, concentration, strength, and ductility is explored, and relations between toughening and bridge length at fracture are given. Available experimental information is examined in the light of the analyses. Keywords: particulate toughening; Metal reinforced ceramics. (Author)

Descriptors :   *FRACTURE(MECHANICS), *CRACKS, *TOUGHNESS, *CERAMIC MATERIALS, BRIDGES, LENGTH, SURFACES, METALS, REINFORCING MATERIALS, PARTICLE SIZE, DUCTILITY, THEORY, METAL MATRIX COMPOSITES, PARTICULATES, FATIGUE(MECHANICS), LIFE EXPECTANCY(SERVICE LIFE), FIBER REINFORCED COMPOSITES, SPRINGS, ELASTIC PROPERTIES, PLASTIC PROPERTIES, STRENGTH(MECHANICS)

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE