A method to estimate the influence of the notch-root radius on the fracture toughness measurement of ceramics

The fracture toughness measurement of ceramics is based on notched specimens. If the notch-root radius is too large, it leads to overestimate the actual fracture toughness of the material. It is then necessary to control the notch shape and to machine it carefully in order to have a root-radius smal...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2006, Vol.26 (8), p.1421-1427
Main Authors: Picard, D., Leguillon, D., Putot, C.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Engineering Sciences
Exact sciences and technology
Fracture
Mechanical properties
Mechanics
Notched specimen
Strength
Testing
Toughness and toughening
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Summary:The fracture toughness measurement of ceramics is based on notched specimens. If the notch-root radius is too large, it leads to overestimate the actual fracture toughness of the material. It is then necessary to control the notch shape and to machine it carefully in order to have a root-radius small enough (
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2005.02.016