作者: Rolf W. Steinbrech , Olaf Schmenkel
DOI: 10.1111/J.1151-2916.1988.TB05078.X
关键词: Crack resistance 、 Composite material 、 Forensic engineering 、 Materials science 、 Surface (mathematics) 、 Residual stress
摘要: The resistance of coarse-grained alumina to stable crack growth, initiated from “naturally’occurring surface flaws, was studied in strength tests with a bend-bar technique. cracks experienced R-curve behavior over the first few hundred micrometers; i.e., applied driving force had be increased extension. Compared R curves generated long standard single-edge-notched-bend specimens, surface-crack have lower initial values. possible influence localized residual stresses, counteracting force, is discussed.