A Brief Review of Some Local Approaches for the Failure Assessment of Brittle and Quasi-Brittle Materials

Figure 6

Critical volume (area) for sharp V-notch (a), crack (b), and blunt V-notch (c) under mode I loading. Distance 𝑟₀=𝜌×(𝜋−2𝛼)/(2𝜋−2𝛼).

(a)

(b)

(c)