Issue 41

S. Seitl et alii, Frattura ed Integrità Strutturale, 41 (2017) 323-331; DOI: 10.3221/IGF-ESIS.41.43 328 N = 1 N = 2 a) Knésl & Bednář [5] b) experiment + ODM Figure 3 : σ HMH crack tip stress approximation considering one and two initial terms of the Williams expansion on specimen denoted as YX9 a6_im16 (P = 3.706 kN, a = 22 mm): a) stress values calculated from the coefficients determined theoretically [5]; b) stress values calculated from the coefficients obtained by means of the ODM from the experimental measurements. N = 1 N = 2 a) Knésl & Bednář [5] b) experiment + ODM Figure 4 : σ 1 crack tip stress approximation considering one and two initial terms of the Williams expansion on specimen denoted as YX9 a19_im30 ( P = 7.060 kN, a = 28.62 mm): a) stress values calculated from the coefficients determined theoretically [5]; b) stress values calculated from the coefficients obtained by means of the ODM from the experimental measurements.