Das (mm) 0 5 10 15 20 25 30 Load (KN) 0 5 10 15 20 25 30 35 40 C(T) 2024-T351 LT B = 6.35 mm W = 152 mm a/W = 0.4 Flat Slant ZIP3D (Yc = 6.8 deg) WARP3D (Yc = 6.35 deg) Das (mm) 0 102030405060708090 Remote Stress (MPa) 0 50 100 150 200 250 M(T) 2024-T351 B = 6.35 mm W = 1016 mm 2a/W = 1/3 Da is average of left and right tips all failed with slant fracture Test 1 Test 2 Test 3 Yc = 6.35 deg With anti-buckling guides No anti-buckling guides (a) 152 mm C(T) (b) 1016 mm M(T) Figure 2: Experimental and numerical load-crack extension d5 (mm) 0.0 0.5 1.0 1.5 2.0 2.5 Load (KN) 0 5 10 15 20 25 30 35 C(T) 2024-T351 B = 6.35 mm W = 152 mm a/W = 0.4 Test 1 ZIP3D (Yc = 6.8 deg) Test 2 WARP3D (Yc = 6.35 deg) d5 (mm) 0 1 2 3 4 Load (MPa) 0 50 100 150 200 Test 1 WARP3D (Yc = 6.35 deg) M(T) 2024-T351 B = 6.35 mm W = 1016 mm 2a/W = 1/3 (a) 152 mm C(T) (b) 1016 mm M(T) Figure 3: Experimental and numerical load-d5 results Figure 1: Schematic of a typical fracture surface TABLE 1 CRACK EXTENSION AT MAXIMUM APPLIED LOAD Specimen Load (KN) Das (mm) Damax (mm) 1 24.4 0.25 2.0 2 17.8 0 0.6 3 13.3 0 0.1
RkJQdWJsaXNoZXIy MjM0NDE=