Pereira, CPMVoorwald, HJCKarihaloo, B. L.Mai, Y. W.Ripley, M. I.Ritchie, R. O.2014-05-202014-05-201997-01-01Advances In Fracture Research, Vols 1-6. Oxford: Pergamon Press Ltd, p. 1483-1490, 1997.http://hdl.handle.net/11449/39010Experimental programs in constant and variable amplitude loading were performed to obtain a x N curves and to study retardation in fatigue crack growth due to overloads. The main aim of this research program was to analyse the effect of overload ratio and number of overload peaks. The effect of underloads, before and after the overload blocks was also studied. The generalised equation of Paris-Erdogan type was used for modelling of obtained data on crack propagation under constant amplitude load.1483-1490engfatigue crack growthaluminiumretardationvariable amplitude loadinga x N curvesTrabalho apresentado em eventoWOS:A1997BJ89P00168Acesso aberto3511534795805776