PSI - Issue 39

Andrea Zanichelli et al. / Procedia Structural Integrity 39 (2022) 632–637 Author name / Structural Integrity Procedia 00 (2021) 000–000

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the line perpendicular to the material surface. On the other hand, the crack orientations estimated by considering the center of the slip zone as the crack nucleation point were inward the contact region, with estimated values close to the experimental average ones. Therefore, for the experimental campaign examined, it can be stated that a crack nucleation location within the contact zone allows to better estimate the fretting fatigue crack path, with respect to a crack nucleation point in correspondence to the trailing edge of the contact. Acknowledgements The present research work is supported by Italian Ministry of University and Research (P.R.I.N. National Grant 2017, Project code 2017HFPKZY; University of Parma Research Unit). References Almeida, G.M.J., Pessoa, G.C.V., Cardoso, R.A., Castro, F.C., Araújo, J.A., 2020. Investigation of crack initiation path in AA7050-T7451 under fretting conditions. Tribology International 144, 106103. Araújo, J.A., Almeida, G.M.J., Ferreira, J.L.A., da Silva, C.R.M., Castro, FC., 2017. Early cracking orientation under high stress gradients: The fretting case. International Journal of Fatigue 100, 611-618. Carpinteri, A., Ronchei, C., Scorza, D., Vantadori, S., 2015. Critical plane orientation influence on multiaxial high-cycle fatigue assessment. Physical Mesomechanics 18, 4, 348-354. Carpinteri, A., Vantadori, S., Zanichelli, A., 2019. Lifetime estimation of mechanical assemblies under constant amplitude fretting fatigue loading. Fatigue and Fracture of Engineering Materials and Structures 42, 9, 1927-1936. Chen, H., Shang, D.-G., Tian, Y.-J., Liu, J.-Z., 2012. Comparison of multiaxial fatigue damage models under variable amplitude loading. Journal of Mechanical Science and Technology 26, 3439-3446. Nowell, D., Hills, D.A., 1987. Mechanics of fretting fatigue tests. International Journal of Mechanical Sciences 29, 5, 355-365. Rossino, L.S., Castro, F.C., Bose Filho, W.W., Araújo, J.A., 2009. Issues on the mean stress effect in fretting fatigue of a 7050–T7451 Al alloy posed by new experimental data. International Journal of Fatigue 31, 2041-2048. Vantadori, S., Carpinteri, A., Fortese, G., Ronchei, C., Scorza, D., Zanichelli, A., 2018. Fatigue lifetime evaluation of notched components: Implementation of the control volume concept in a strain-based LCF criterion. Theoretical and Applied Fracture Mechanics 97, 400-408. Vantadori, S., Carpinteri, A., Luciano, R., Ronchei, C., Scorza, D., Zanichelli, A., Okamoto, Y., Saito, S., Itoh, T., 2020a. Crack initiation and life estimation for 316 and 430 stainless steel specimens by means of a critical plane approach. International Journal of Fatigue 138, 105677. Vantadori, S., Valeo, J.V., Zanichelli, A., 2020b. Fretting fatigue and shot peening: a multiaxial fatigue criterion including residual stress relaxation. Tribology International 151, 106537. Vantadori, S., Zanichelli, A., Araújo, J.A., 2020c. Fretting fatigue of 7050-T7451 Al alloy: the influence of bulk mean stress. International Journal of Fatigue 140, 105816. Vantadori, S., Zanichelli, A., 2021. Fretting-fatigue analysis of shot-peened aluminium and titanium test specimens. Fatigue & Fracture of Engineering Materials & Structures 44, 2, 397-409. Vázquez, J., Navarro, C., Domínguez, J., 2017. Analysis of fretting fatigue initial crack path in Al7075-T651 using cylindrical contact. Tribology International 108, 87-94. Venkatesh, T.A., Conner, B.P., Suresh, S., Giannakopoulos, A.E., Lindley, T.C., Lee, C.S., 2001. An experimental investigation of fretting fatigue in Ti-6Al-4V: The role of contact conditions and microstructure. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 32, 5, 124, 1131-1146. Waterhouse, R., Lindley, T., 1994. Fretting Fatigue. London, UK, ESIS Publications. Zanichelli, A., Vantadori, S., 2021. Shot-peened fretting fatigue components: Endurance strength and fatigue life assessment. Material Design and Processing Communications 3, 4, e196.