Figure 11

SEM images of crack origin showing (a) distinct regions of crack morphology are identified: type 2, type 3 and type 4 and close-up views of (b) type 2, (c) type 3 and (d) type 4 fracture patterns.
SEM images of crack origin showing (a) distinct regions of crack morphology are identified: type 2, type 3 and type 4 and close-up views of (b) type 2, (c) type 3 and (d) type 4 fracture patterns.