![]() Also, tensile fracture toughness was decreased with increasing the particle size. Number of cracks increase by decreasing the ball diameter. These crack initiates from notch tip, propagate parallel to loading axis and coalescence with upper model boundary. Tensile cracks are dominant mode of failure. ![]() The results shows that Failure pattern is constant by increasing the ball diameter. ![]() The effect of particle size on the hollow center cracked disc (HCCD) in Brazilian test were considered too. The pre-existing edge cracks in the disc models were considered to investigate the crack propagation and coalescence paths within the modelled samples. Hollow center cracked disc (HCCD) in Brazilian test was modelled numerically to study the crack propagation in the pre-cracked disc.
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