Issue 42

Frattura ed Integrità Strutturale, 42 (2017); International Journal of the Italian Group of Fracture I Table of Contents I. Milošević, G. Winter, F. Grün, Martin Kober Influence of the stress gradient on the fatigue life calculation of a martensitic high strength steel …............. 1 M. C. Vasco, P. Polydoropoulou, A. N. Chamos, S. G. Pantelakis. Effect of corrosion and sandblasting on the high cycle fatigue behavior of reinforcing B500C steel bars … 9 D. Rozumek, S. Faszynka Fatigue crack growth in 2017A-T4 alloy subjected to proportional bending with torsion …………… 23 R.Pawliczek, C.T Lachowicz Modeling of the stress-strain relationship for specimens made of S355J0 steel subjected to bending block loading with mean load ........................................................................................................................ 30 D. Rozumek, Z. Marciniak Crack growth of explosive welding zirconium-steel bimetal subjected to cyclic bending …….....……… 40 M. Olzak, J. Piechna, P. Pyrzanowski Numerical analysis of the influence of liquid on propagation of a rolling contact fatigue crack ………….. 46 S. Seitl, J. D. Ríos, H. Cifuentes Comparison of fracture toughness values of normal and high strength concrete determined by three point bend and modified disk-shaped compact tension specimens ………………………………………. 56 O. Krepl, J. Klusák Crack onset assessment near the sharp material inclusion tip by means of modified maximum tangential stress criterion …………………………………………………………………………...... 66 P.J. Huffman, J. Ferreira, J.A.F.O. Correia, A.M.P. De Jesus, G. Lesiuk, F. Berto, A. Fernández-Canteli, G. Glinka Fatigue crack propagation prediction of a pressure vessel mild steel based on a strain energy density model 74 M. Kowalski Identification of fatigue and mechanical characteristics of explosively welded steel - titanium composite.…….................................................................................................................................... 85 H. Carvalho, R. Hallal Fakury, P. Moura Leite Vilela Structural integrity assessment and rehabilitating of Hercilio Luz bridge …………………………... 93 P. Raposo, J.A.F.O. Correia, A.M.P. De Jesus, R.A.B. Calçada, G. Lesiuk, M. Hebdon, A. Fernández-Canteli Probabilistic fatigue S-N curves derivation for notched components ………………………................ 105