Figure 3
From: A laboratory study of hydraulic fracturing at the brittle-ductile transition
The numerical simulations of the stress concentration effects in procedure P1 (see Methods). The red spots indicate damaged areas (\(d\ge 10^{-4}\)) and the contour map the deviatoric stress \(\sigma _\text{D}\) distribution at the mixed-mode initiation pressure (a,c) and mode-I propagation pressure (b,d).
