as crystallinity plays an important role in shear lip formation during crack propagation, which is associated with higher fracture toughness due to the plane stress-like deformation.
c] when the pipe bore was notched and thus the shear lip was "removed.
To promote consistent shear lip growth, the specimen is loaded off center, at an offset c = 5 mm from the mid plane in which the notch lies (Fig.
Orientation away from the normal to the fracture plane clearly suppresses shear lip development and thus decreases the energy absorption that could have stopped the crack before it broke the free surface.
The same authors used a similar approach to analyze fracture in polymers where a plane strain shear lip
layer could be distinguished on the fracture surface (5-8).
The propagation zone itself is characterized by (i) hackle zone (B) (ii) interior zone (C) and (iii) shear lip
In addition, the ductile specimens displayed significant shear lip
behavior in front of the crack tip.
At first glance, the area to the right of this V-shaped feature appears to be reminiscent of shear lip
It is also called as shear lips
and characteristic behavior of ductile failure mode [23,13].
Dull fibrous fracture face and shear lips
from final specimen failure.
Observations of the fractured surfaces in the plateau region showed thin shear lips
of essentially constant thickness which enclosed a smooth brittle type of fractured surface.
Fracture surfaces of specimens tested at 0 [degrees] C, close to the BDT temperature, were composed of shear lips
(whitish) near edges and a smooth area (dark) in the center.