Small-scale crack bridging and the fracture toughness of particulate-reinforced ceramics |
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| Affiliation: | 1. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People''s Republic of China;2. School of Physics and State Key Laboratory for Artificial Structure and Mesoscopic Physics, Applied Superconductivity Research Center, Peking University, Beijing 100871, People''s Republic of China |
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| Abstract: | Theoreticalanalyses 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. |
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