Journal
INTERNATIONAL JOURNAL OF FRACTURE
Volume 181, Issue 2, Pages 309-316Publisher
SPRINGER
DOI: 10.1007/s10704-013-9832-5
Keywords
Sudden fracture; U-notch; Isostatic graphite; Notch stress intensity factors (NSIFs); Mixed mode loading
Categories
Funding
- Iran National Science Foundation (INSF) [90006227]
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The U-notched maximum tangential stress (UMTS) criterion, proposed originally and utilized previously by the author and his co-researcher for predicting mixed mode I/II fracture in plexi-glass (PMMA) and also pure mode II fracture in PMMA and soda-lime glass, was employed to estimate the experimental results reported in literature dealing with brittle fracture of many U-notched fine-grained isostatic graphite plates under combined tensile/shear loading conditions. By using the fracture curves of the UMTS criterion, which can predict the onset of brittle fracture in terms of the notch stress intensity factors (NSIFs) in the entire domain from pure mode I to pure mode II, the mixed mode fracture toughness (i.e. the load-bearing capacity) of U-notched graphite plates was successfully estimated.
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