Issue 36

V. Petrova et alii, Frattura ed Integrità Strutturale, 36 (2016) 8-26; DOI: 10.3221/IGF-ESIS.36.02 15 (a) (b) (c) (d) Figure 5 : Stress intensity factors k I and k II as function of the inclination angle β=β n of the edge cracks to the surface for different distances d between the cracks: (a) for crack 1 (60° ≤ β ≤ 120°), (b) for crack 2 (60° ≤ β ≤ 120°), (c) for crack 1 (15° ≤ β ≤ 90°), (d) for crack 2 (15° ≤ β ≤ 90°). Two edge cracks with different sizes a 1 =1 and a 2 =0.5. (a) (b) Figure 6 a, b : Fracture angles ϕ (1) and ϕ (2) as functions of the inclination angle β=β n of the edge cracks to the surface for different distances between the cracks: (a) for crack 1 (60° ≤ β ≤ 120°), (b) for crack 2 (60° ≤ β ≤ 120°). Two edge cracks with different sizes a 1 =1 and a 2 =0.5.