

Figure 3 shows a broken compact tension specimen, which also has a mixed-mode crack surface at the macro scale. Note that the area in the pink oval is the actual crack area. The lower left and far right very flat portions of the specimen extending from the fracture surface areas are machined flat in order to create the notch that is a part of the test procedure, intended to guarantee macro-scale brittle cracking.


Figure 4 shows a flat strip that was prepared as a tensile-test coupon. The material is thin and shows a classical slant oriented macro scale ductile fracture.

