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Numerical investigation of stress intensity factor for semi-circular bend specimen with chevron notch

One of the specimens to investigate the mode-I fracture toughness of rock and geo-materials is semi-circular bend (SCB) specimen. In general, initial cracks in rock test specimens are produced in two shapes: straight-edge cracks and chevron notches. The ISRM suggested SCB specimen has straight shaped notch.

tohitohi
19/05/2020

Semi-circular bend specimen

Stress intensity factor

Finite element analysis

Mode-I fracture toughness of rock

Straight-edge cracks

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