THE TRANSITION FROM SINGLE TO MULTIPLE CRACKING IN CERAMIC/METAL LAMINATES | ||
The International Conference on Applied Mechanics and Mechanical Engineering | ||
Article 38, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 47-63 PDF (625.97 K) | ||
Document Type: Original Article | ||
DOI: 10.21608/amme.2008.39258 | ||
Authors | ||
El-Shaer Y.1; Derby B.2 | ||
1Egyptian Armed Forces. | ||
2Professor, Manchester Materials Science Centre, UMIST, Manchester, U.K. | ||
Abstract | ||
ABSTRACT During the fracture of metal/ceramic laminates two different damage modes are observed: one is the formation of a zone of multiple cracks near the tip of a macroscopic crack, and the other is the continuous propagation of a macroscopic crack in the ceramic layers while the metal layers remain intact. The criterion for the transition from single to multiple cracking is a key parameter for the design of metal/ceramic laminates. A plot (which is called a ‘Fracture map’) has been constructed to enable the designer to determine the fracture mode for a given laminate. In the present work, a new fracture map is proposed which includes the effect of the non-deterministic strength of the ceramic on the transition from single to multiple cracking. The proposed probability-based fracture map is compared with previous maps, and compared with experimentally observed fracture modes of different ceramic/metal laminates. | ||
Keywords | ||
ceramic; Crack growth; Laminates; fracture | ||
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