Issue 35

J. Albinmousa, Frattura ed Integrità Strutturale, 35 (2016) 182-186; DOI: 10.3221/IGF-ESIS.35.21 184 No. Loading ε a (%) γ a (%) σ a (MPa) τ a (MPa) N f 1 Axial 0.300 0.00 207.1 0.0 28,600 2 0 0.231 0.40 161.0 103.0 47,500 3 0 0.202 0.35 138.0 103.1 57,845 4 90 0.346 0.60 247.7 157.8 2,700 5 90 0.231 0.40 161.8 105.9 28,500 6 90 0.202 0.35 143.8 113.8 40,860 7 45 0.231 0.40 163.9 131.8 20,900 Table 1 : Summary of cyclic tests for AlMg4.5Mn [8]. Figure 2 : Variations of projected angle β and crack length with cycling. Planes of maximum normal and maximum shear strains are indicated by red-dashed and green-dashed lines, respectively. 0 75 150 225 -90 -60 -30 0 30 60 90 0.0 0.2 0.4 0.6 0.8 1.0 Crack length (μm) Orientation ( ° ) N/Nf No. 1 beta Max Normal Max Shear Length Exp Fit 0 500 1000 1500 -90 -60 -30 0 30 60 90 0.0 0.2 0.4 0.6 0.8 1.0 Crack length (μm) Orientation ( ° ) N/Nf No. 2 beta Max Normal Max Shear Length Exp Fit 0 40 80 120 160 -90 -60 -30 0 30 60 90 0.0 0.2 0.4 0.6 0.8 1.0 Crack length (μm) Orientation ( ° ) N/Nf No. 3 beta Max Normal Max Shear Length Exp Fit 0 75 150 225 -90 -60 -30 0 30 60 90 0.0 0.2 0.4 0.6 0.8 1.0 Crack length (μm) Orientation ( ° ) N/Nf No. 4 beta Max Normal Max Shear Length Exp Fit 0 500 1000 1500 2000 -90 -60 -30 0 30 60 90 0.0 0.2 0.4 0.6 0.8 1.0 Crack length (μm) Orientation ( ° ) N/Nf No. 5 beta Max Normal Max Shear Length Exp Fit 0 40 80 120 160 -90 -60 -30 0 30 60 90 0.0 0.2 0.4 0.6 0.8 1.0 Crack length (μm) Orientation ( ° ) N/Nf No. 6 beta Max Normal Max Shear Length Exp Fit 0 400 800 1200 1600 -90 -60 -30 0 30 60 90 0.0 0.2 0.4 0.6 0.8 1.0 Crack length (μm) Orientation ( ° ) N/N f No. 7 beta Max Normal Max Shear Length Exp Fit