Numerical Analysis of Brazilian Disc Test with a Central Notch: Constrain Level for Various Notch Inclination Angles
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Petr Miarka,
Ildiko Merta,
Stanislav Seitl
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| Transactions of the VSB - Technical University of Ostrava, Civil Engineering Series |
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2019, Volume 19, Issue 2, Pages 29-32
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Doi: 10.35181/tces-2019-0016
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The Brazilian disc test is widely used to determinate indirect tensile strength or fracture mechanical parameters of rocks, concrete and polymers. The fracture mechanical parameters evaluated from such a test provides information of mode I, mode II and mixed mode I/II fracture initiation. While the geometry functions for calculation of stress intensity factors are known, the T-stress values are lacking. Especially, the lack of T-stress can be noticed, when the T-stress equals to zero. This contribution aims to find crack inclination angle for which the T-stress values are close to zero and evaluate stress intensity factor for such an angle. For this, a numerical study was performed.
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