Premium
Fracture Toughness of Graded Metal‐Particulate/Brittle‐Matrix Composites
Author(s) -
Jessen Todd L.,
Lewis David
Publication year - 1990
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1990.tb05212.x
Subject(s) - composite material , materials science , volume fraction , fracture toughness , composite number , brittleness , particulates , toughness , biology , ecology
A series of 0, 10, and 25 vol% metal‐particulate/glass‐matrix composites were prepared, with the composite volume fraction both constant and graded across the specimen bulk. Applied‐moment double‐cantilever‐beam (AMDCB) fracture toughness results show, in general, that the graded composites had equivalent values when compared with the constant fraction specimens. This equivalence in toughness occurred despite lower overall volume fraction particulate phase and composite density for the graded composites. Additionally, these results indicate the necessity of a minimum composite layer thicknes for optimization of toughening.