On assessing the tensile cracking pattern in brittle rocks and solids

This work aims to identify fracture pattern and crack growth mode in brittle rocks and solids under induced tensile stresses, and further investigates how the estimation of material tensile strength is influenced by the fracture mode in the Brazilian test. Using ultra-high-speed photography technique and optical methods at 100 kHz and above, the fracture propagation modes of 450 samples of several materials (including various rock types,...