PSI - Issue 18

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000

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ScienceDirect

Procedia Structural Integrity 18 (2019) 373–378

25th International Conference on Fracture and Structural Integrity Influence of structural characteristics on the interlaminar shear strength of CFRP/Al fibre metal laminates Costanzo Bellini*, Vittorio Di Cocco, Francesco Iacoviello and Luca Sorrentino Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via G. Di Biasio 43, Cassino 03043, Italy Abstract High mechanical characteristics, such as impact and fatigue resistance, coupled with low weight can be obtained combining metal sheets and composite laminates; in this way a new hybrid material is obtained: the FML (Fibre Metal Laminate). In the present paper, an analysis of the influence of both composite/metal interface and layer thickness on ILSS (InterLaminar Shear Strength) of a carbon fibre composite and aluminium FML is presented. In particular, two different interfaces were studied: one obtained with a structural adhesive and the other with the prepreg resin; as concerns the layer thickness, both one and two aluminium sheets were considered in laminate stacking, maintaining constant the metal/composite volume ratio. The produced laminates were tested following the short beam three-point bending standard, in such a manner the ILSS properties can be highlighted. From the test carried out for this work it can be concluded that the most influencing factor was the presence of the structural adhesive, while the number of metal sheets was unaffecting. 25th International Conference on Fracture and Structural Integrity Influence of structural characteristics on the interlaminar shear strength of CFRP/Al fibre metal laminates Costanzo Bellini*, Vittorio Di Cocco, Francesco Iacoviello and Luca Sorrentino Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via G. Di Biasio 43, Cassino 03043, Italy Abstract High mechanical characteristics, suc as impact and fatigue resistance, couple with low weight can be obtained combining metal sheets d composite laminates; in this way a new hybrid material is obtained: the FML (Fibre Metal Laminate). In th present paper, an analysis of the influence of both composit /metal interface and layer thickness on ILSS (InterLaminar Sh ar Strength) of carbon fibre composite and aluminium FML is prese ted. In particular, two different interfaces were studied: one obtained ith a structural adhesive and the other with the prepreg resin; as concerns the layer thickness, both one an two alu inium sheets were c nsidered in laminate stacking, maintaini const nt the metal/composite volume ratio. The produced laminates were tested following the s ort beam three-point bending standard, in such a manner the ILSS roperties can be highlighted. From the test carried out for this work it can be concluded that the most influencing factor was the presence of the structural adhesive, while the number of metal sheets was unaffecting.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo.

Keywords: Interlaminar shear strength; CFRP/Al fibre metal laminates. Keywords: Interlaminar shear strength; CFRP/Al fibre metal laminates.

1. Introduction One of the most interesting material types is represented by FMLs (Fibre Metal Laminates), that presents some characteristics of metal, as the ductility, and some other of composite materials, as the high strength (Fu et al. (2014)). In the past, the first FML that was considered for industrial application has been the GLARE (Glass Laminate 1. Introduction One of the most interesting material types is represented by FMLs (Fibre Metal Laminates), that presents some characteristics of metal, as the ductility, and some other of composite materials, as the high strength (Fu et al. (2014)). In the past, the first FML that was considered for industrial application has been the GLARE (Glass Laminate

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. * Correspon ing author. Tel.: +39-0776-2993698; fax: +39-0776-2993886. E-mail address: costanzo.bellini@unicas.it * Corresponding author. Tel.: +39-0776-2993698; fax: +39-0776-2993886. E-mail address: costanzo.bellini@unicas.it

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 10.1016/j.prostr.2019.08.177