Gómez-Gonzales, Giancarlo LuisVasco, José ManuelAntunes, Fernando VenturaNeto, Diogo MarianoDiaz-Garrido, Francisco Alberto2025-01-102025-01-102023-05-23G.L. Gómez Gonzales, J.M. Vasco-Olmo, F.V. Antunes, D.M. Neto, F.A. Díaz. Experimental analysis of the plastic CTOD to characterize the variable amplitude fatigue crack growth in Grade 2 titanium samples. International Journal of Fatigue, 174: 107728, 2023. https://doi.org/10.1016/j.ijfatigue.2023.107728.0142-112310.1016/j.ijfatigue.2023.107728https://doi.org/10.1016/j.ijfatigue.2023.107728https://hdl.handle.net/10953/3809T1, Q1 (15/183 en Mechanical Engineering, IF 2023 = 5.7)In this paper, the plastic component of the crack-tip opening displacement (CTODp) is experimentally evaluated to characterize the fatigue crack growth behavior in a Grade 2 titanium sample under single overload with constant amplitude loading conditions. The CTOD measurements were performed with the 2D-Digital Image Correlation (DIC) technique. The experimental results show a linear correlation between CTODp and fatigue crack growth rates, suggesting the independence of this relationship to load-interaction effects. Therefore, this study demonstrates that the CTODp can be a suitable crack-driving parameter to study crack propagation behavior under variable amplitude loading. Furthermore, it suggests that the fatigue crack growth process is primarily caused by cyclic plastic deformation.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Fatigue crack growthGrado 2 titaniumOverloadDICPlastic CTODinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess