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Fracture Toughness Measurement of Glass and Ceramic Materials Using Chevron‐Notched Specimens
Author(s) -
Reddy K. Pattabhi Rami,
Fontana Eugene H.,
Helfinstine Jchn D.
Publication year - 1988
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1988.tb05911.x
Subject(s) - materials science , fracture toughness , composite material , ceramic , bar (unit) , fracture (geology) , chevron (anatomy) , toughness , geology , paleontology , oceanography
Fracture toughness of several different materials was measured using chevronnotched short bar and four‐point bend specimens For glass‐ceramic and ceramic samples both specimens gave valid results. Fracture toughness values measured with bend specimens are 5% to 10% higher compared to those of the short bar. Consistent results for glass could be obtained only with short bar specimens. The notch width of the bend specimen affected the stability of crack growth in glass samples. Fracture toughness values measured in the present study are in good agreement with those of the previous studies.