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

Table 1

Microstructural support factor 𝑠 (plateau values) of tension-loaded V-notches for different failure criteria under plane stress and plane strain conditions.

2𝛼	Normal stress	von Mises plane stress	von Mises plane strain	Beltrami plane stress	Beltrami plane strain
0°	2.00	2.50	2.90	2.30	2.42
90°	2.81	3.37	3.80	3.14	3.28
120°	3.67	4.32	4.84	4.06	4.24
135°	4.56	5.33	5.94	5.02	5.22
150°	6.38	7.41	8.20	6.99	7.25