Fracture Toughness Measurement of Glass and Ceramic Materials Using Chevron-Notched Specimens

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 sh...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1988-06, Vol.71 (6), p.C-310-C-313
Main Authors: Reddy, K. Pattabhi Rami, Fontana, Eugene H., Helfinstine, Jchn D.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Glasses
Structure, analysis, properties
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Summary: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.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1988.tb05911.x