Issue 33

Frattura ed Integrità Strutturale, 33 (2015); International Journal of the Italian Group of Fracture I Table of Contents D. Nowell, S.J. O’Connor, K.I. Dragnevski Measurement and analysis of fatigue crack deformation on the macro- and micro-scale ……………. 1 A. Shanyavskiy Spherical particles formation under biaxial cyclic loading due to mesotunneling effect …………… 8 F. Berto, A. Campagnolo, L. P. Pook Three-dimensional effects on cracked components under anti-plane loading ………………………. 17 L. Malíková, V. Veselý, S. Seitl Estimation of the crack propagation direction in a mixed-mode geometry via multi-parameter fracture criteria …………………………………………………………………………………. 25 G. Meneghetti, A. Campagnolo, F. Berto Some relationships between the peak stresses and the local strain energy density for cracks subjected to mixed-mode (I+II) loading ……………………………………………………………….. 33 Y. Hos, M. Vormwald, J.L.F. Freire Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading ….. 42 D. Shiozawa, I. Serrano-Munoz, S. Dancette, C. Verdu, J. Lachambre, J.-Y. Buffiere 3D Analyses of crack propagation in torsion ………………………………………………... 56 D. A. Hills, R. Flicek Fretting in complete contacts - the use of Williams’ solution …………………………………… 61 M.-L. Zhu, Y.-W. Lu, C. Lupton, J. Tong Near tip strain evolution of a growing fatigue crack …………………………………………... 67 G.P. Nikishkov, Yu.G. Matvienko Specimen thickness effect on elastic-plastic constraint parameter A …………………………….... 73 A. Spagnoli, A. Carpinteri, S. Vantadori Interpreting experimental fracture toughness results of quasi-brittle natural materials through multi- parameter approaches …………………………………………………………………….. 80 R.C.O. Góes, J.T.P. Castro, M.A. Meggiolaro 3D thickness effects around notch and crack tip stress/strain fields …………………………….. 89 J.T.P. Castro, M.A. Meggiolaro, J.A.O. González Can  K eff be assumed as the driving force for fatigue crack growth? …………………………….. 97 C. Bagni, H. Askes, L. Susmel Gradient-enriched linear-elastic tip stresses to perform the high-cycle fatigue assessment of notched plain concrete ………………………………………………………………………………… 105