Tensile fracture toughness measurements in ceramics

Journal Article · Sat Feb 28 23:00:00 EST 1987 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1987.tb04960.x· OSTI ID:5619916

Tschegg, E K; Suresh, S

A novel procedure is outlined whereby fracture toughness values for ceramics can be measured under uniaxial tension (mode I) in specimens containing a fatigue crack. Circumferentially notched rods of a polycrystalline aluminum oxide were precracked in cyclic compression to introduce a fatigue crack at room temperature. Subsequently, the precracked rods were fractured in pure tension. Highly reproducible values of fracture toughness were obtained using this method.

• Research Organization: Institute of Applied and Technical Physics, Technical Univ. of Vienna, Karlsplatz 13, A-1040, Vienna
• OSTI ID: 5619916
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 70:3; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CERAMICS
CHALCOGENIDES
COMPRESSION
CRACKS
CRYSTALS
DESTRUCTIVE TESTING
FATIGUE
FRACTURE PROPERTIES
MATERIALS TESTING
MEASURING METHODS
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
POLYCRYSTALS
RODS
TENSILE PROPERTIES
TESTING