Figure 13

Proposed fracture pattern map of HIPS with abscissa as the initial stress triaxiality, η and ordinate as crack propagation speed, Vc. (Note: type 1 is observed at ×500 and types 2–4 are all observed at same scale of ×5000 under SEM).
Proposed fracture pattern map of HIPS with abscissa as the initial stress triaxiality, η and ordinate as crack propagation speed, Vc. (Note: type 1 is observed at ×500 and types 2–4 are all observed at same scale of ×5000 under SEM).