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A singular hybrid finite element with seven nodes and triangular shape is used to determine the stress intensity factors for the splitting tension test. For different types of marble the finite-element simulations were used to compute the fracture toughness values. The small-grained marble types exhibit a high fracture toughness and stable crack growth. The smallest toughness was obtained for the coarse grained Georgia marble.
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Celestino et al. (2001) studied this question.
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