PSI - Issue 28

Costanzo Bellini et al. / Procedia Structural Integrity 28 (2020) 667–674 Author name / Structural Integrity Procedia 00 (2019) 000–000

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a better flexural behaviour of the all-titanium ones; in fact, a stiffness decrease of 62.5 % was found. However, some interesting conclusions were drawn considering the weight of the structures. In fact, the hybrid specimens were lighter than the all-titanium ones since the titanium skins weighted 2.5 times the CFRP ones. An analytical relation was proposed to calculate the bending stiffness of a hybrid structure presenting the same weight of the all-titanium one, and a stiffness increment of 86.2% was found.

Fig. 6. Bending stiffness comparison between experimental and calculated values.

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