Subcritical Crack Growth Characteristics on Compact Type Specimens and Indentation Cracks in Glass

[+] Author and Article Information
M. Yoda

College of Engineering, Nihon University, Koriyama, 963, Japan

J. Eng. Mater. Technol 111(4), 399-403 (Oct 01, 1989) (5 pages) doi:10.1115/1.3226486 History: Received June 01, 1988; Revised February 16, 1989; Online September 15, 2009


For the purpose of comparing crack growth characteristics on small indentation cracks with those for long cracks, subcritical crack growth data on soda-lime glass were obtained using the compact type (CT) specimens with long cracks and the indentation cracks. It was found that there is apparently a small crack effect in the as-indented cracks which increases crack growth. However, the annealed indentation crack shows the same trend of crack growth as that for the CT specimens. A residual stress effect can be used to explain this anomalous growth behavior of the as-indented cracks.

Copyright © 1989 by ASME
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