Abstract

Mode I and mode I + II fatigue crack growth experiments are performed using compact tension shear specimens made of Ti-6Al-4V by additive manufacturing for various loading angles. The performance of various methodologies used to determine the equivalent stress intensity factor were studied, obtaining good results in simpler methods when the crack deflection angle was also included in the algorithm. The crack growth speed didn’t suffer significant alterations due to similar values of crack deflection angle, mode I loading predomination and similar crack closure effect. Fractured surfaces presented irregular regions consequence of intergranular separation between α phase and agglomerations of β phase.

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