Issue 49

C. Bellini et alii, Frattura ed Integrità Strutturale, 49 (2019) 739-747; DOI: 10.3221/IGF-ESIS.49.66 746 behaviour after the maximum stress, various stress trends were noticed: an elevated stress drop characterized the type A and type D specimens, while for the other two laminates types it was reduced or quite absent. In the light of this analysis, it can be concluded that the specimen with two metal sheet and the adhesive was the safer one since it was able to sustain a load near to the maximum one for a long strain interval, even if it presented the lowest maximum stress. Figure 6 : Flexural stress-strain curves of the tested specimens. R EFERENCES [1] Vermeeren, C.A.J.R. (2003). An Historic Overview of the Development of Fibre Metal Laminates, Appl. Compos. Mater., 10(4–5), pp. 189–205, DOI: 10.1023/A:1025533701806. [2] Xu, R., Huang, Y., Lin, Y., Bai, B., Huang, T. (2017). In-plane flexural behaviour and failure prediction of carbon fibre- reinforced aluminium laminates, J. Reinf. Plast. Compos., 36(18), pp. 1384–1399, DOI: 10.1177/0731684417708871. [3] Botelho, E.C., Silva, R.A., Pardini, L.C., Rezende, M.C. (2006). A Review on the Development and Properties of Continuous Fiber/epoxy/aluminum Hybrid Composites for Aircraft Structures, Mater. Res., 9(3), pp. 247–256, DOI: 10.1002/ar.1092200206. [4] Kim, J.G., Kim, H.C., Kwon, J.B., Shin, D.K., Lee, J.J., Huh, H. (2015). Tensile behavior of aluminum/carbon fiber reinforced polymer hybrid composites at intermediate strain rates, J. Compos. Mater., 49(10), pp. 1179–1193, DOI: 10.1177 /0021998314531310 . [5] Sorrentino, L., Bellini, C., Corrado, A., Polini, W., Aricò, R. (2015).Ballistic performance evaluation of composite laminates in kevlar 29. Procedia Engineering, vol. 88, Elsevier B.V., pp. 255–262. [6] Frizzell, R.M., McCarthy, C.T., McCarthy, M.A. (2008). An experimental investigation into the progression of damage in pin-loaded fibre metal laminates, Compos. Part B Eng., 39(6), pp. 907–925, DOI: 10.1016/j.compositesb.2008.01.007. [7] Hu, Y.B., Li, H.G., Cai, L., Zhu, J.P., Pan, L., Xu, J., Tao, J. (2015). Preparation and properties of Fibre-Metal Laminates based on carbon fibre reinforced PMR polyimide, Compos. Part B Eng., 69, pp. 587–591, DOI: 10.1016/j.compositesb.2014.11.011. [8] Lawcock, G., Ye, L., Mai, Y.W., Sun, C.T. (1997). The effect of adhesive bonding between aluminum and composite prepreg on the mechanical properties of carbon-fiber-reinforced metal laminates, Compos. Sci. Technol., 57(1), pp. 35– 45, DOI: 10.1016/S0266-3538(96)00107-8. [9] Botelho, E.C., Silva, R.A., Pardini, L.C., Rezende, M.C. (2004). Evaluation of adhesion of continuous fiber-epoxy composite/aluminum laminates, J. Adhes. Sci. Technol., 18(15–16), pp. 1799–1813, DOI: 10.1163/1568561042708377. [10] Dhaliwal, G.S., Newaz, G.M. (2016). Experimental and numerical investigation of flexural behavior of carbon fiber reinforced aluminum laminates, J. Reinf. Plast. Compos., 35(12), pp. 945–956, DOI: 10.1177/0731684416632606. [11] Wu, X., Pan, Y., Wu, G., Huang, Z., Tian, R., Sun, S. (2017). Flexural behaviour of CFRP/Mg hybrid laminates with different layers thickness, Adv. Compos. Lett., 26(5), pp. 168–172. [12] Sorrentino, L., Polini, W., Bellini, C., Parodo, G. (2018). Surface treatment of CFRP: influence on single lap joint