Abstract
The production and mechanical properties of fiber metal laminates (FMLs) based on 3D printed composites have been investigated in this study. FMLs are structures constituting an alternating arrangement of metal and composite materials that are used in the aerospace sector due to their unique mechanical performance. 3D printing technology in FMLs could allow the production of structures with customized configuration and performance. A series of continuous carbon fiber reinforced composites were printed on a Markforged system and placed between layers of aluminum alloy to manufacture a novel breed of FMLs in this study. These laminates were subjected to tensile, low velocity and high velocity impact tests. The results show that the tensile strength of the FMLs falls between the strength of their constituent materials, while the low and high velocity impact performance of the FMLs is superior to those observed for the plain aluminum and the composite material. This mechanism is related to the energy absorption process displayed by the plastic deformation, and interfacial delamination within the laminates. The present work expects to provide an initial research platform for considering 3D printing in the manufacturing process of hybrid laminates.
Highlights
Fiber metal laminates (FMLs) are structures based on alternating layers of metal and composite layers that are used as primary structures in the aerospace sector due to their unique mechanical performance under static and dynamic conditions [1]
3, where the displayed a superior impact performance support the findings presented in Table 3, where the fiber metal laminates (FMLs) 3/2 displayed a superior impact than the FML 2/1
The present work has investigated the mechanical performance of a new kind of fiber metal laminate (FML)The constituted a continuously
Summary
Fiber metal laminates (FMLs) are structures based on alternating layers of metal and composite layers that are used as primary structures in the aerospace sector due to their unique mechanical performance under static and dynamic conditions [1]. One of the drawbacks of current FMLs is that their composite phase is based on thermosetting materials, which result in the need of relatively long curing cycles [3]. This inconvenience has been addressed by using thermoplastic composites, which can be adhered to the metal layers in a simple manufacturing step [4,5]. Additional advantages related to the use of thermoplastic based FMLs include the possibility of post-forming and repairing damaged parts in a short period of time [6,7].
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