SYMPOSIA PAPER Published: 01 January 1984
STP35239S

Effect of Multiregion Crack Growth on Proof Testing

Source

The effect of subcritical crack growth on proof testing testing is examined. Crack velocity curves obtained by fracture mechanics techniques are used to predict theoretical strength distributions for the specimens that survive proof testing. These theoretical distributions are then compared with experimental distributions obtained on soda lime silica glass slides. The comparison reveals a strong sensitivity of the proof test results to the exact position and shape of the crack growth curve. Minor changes in the crack growth curve result in major shifts in position and shape of the strength distribution curves after proof testing. The importance of crack geometry and specimen configuration to crack growth behavior, and hence to the strength distribution, is emphasized.

Author Information

Wiederhorn, SM
Inorganic Materials Division, National Bureau of Standards, Washington, D.C.
Freiman, SW
Inorganic Materials Division, National Bureau of Standards, Washington, D.C.
Fuller, ER
Inorganic Materials Division, National Bureau of Standards, Washington, D.C.
Richter, H
Fraunhofer-Institut fur Werkstoffmechanik, Frieburg, West Germany
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Details
Developed by Committee: E08
Pages: 95–116
DOI: 10.1520/STP35239S
ISBN-EB: 978-0-8031-4910-6
ISBN-13: 978-0-8031-0265-1