Issue 36

V. Petrova et alii, Frattura ed Integrità Strutturale, 36 (2016) 8-26; DOI: 10.3221/IGF-ESIS.36.02

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Figure 15 : Stress intensity factors k I of the edge cracks to the surface for different distances d between the cracks: (a) for crack 2 (60° ≤ β ≤ 120°), (b) for crack 3 (60° ≤ β ≤ 120°). Three edge cracks with different sizes a 1 =1 and a 2 = a 3 =0.5. and k II as function of the inclination angle β=β n

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Figure 16 : Fracture angles ϕ (1) of the edge cracks to the surface for different distances d between the cracks: (a) for crack 2 (60° ≤ β ≤ 120°), (b) for crack 3 (60° ≤ β ≤ 120°). Three edge cracks with different sizes a 1 =1 and a 2 = a 3 =0.5. (For small angles the figures are similar to the case of two cracks.) and ϕ (2) as functions of the inclination angle β=β n

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Figure 17 : The non-dimensional critical load p cr for two equal edge cracks for different distances d between the cracks: (a) for 3 cracks (60° ≤ β ≤ 120°), (b) for 3 cracks (60° ≤ β ≤ 120°). Three edge cracks with different sizes a 1 =1 and a 2 = a 3 =0.5. as function of the inclination angle β=β n

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