Aluminioaren gainazal-tratamenduaren eragina karbono-zuntzez indartutako Fiber Metal Laminates (FML) materialen propietate mekanikoetan espazio-aplikazioetarako.

Abstract

Fiber Metal Laminates (FMLs) are advanced hybrid materials that combine the properties of metals and composite materials. The aim of this work was to investigate the influence of aluminum surface treatments on the adhesion and mechanical performance of carbon fiber reinforced FMLs for the development of lightweight structures suitable for space applications. The laminates were manufactured under vacuum and pressure using a curing cycle of 90 min at 135 °C. Subsequently, tensile and Charpy impact tests were carried out to evaluate the mechanical properties of the material and the quality of the interlaminar bonding. Tensile test results showed that NaOH-treated specimens exhibited higher strength and stiffness, reaching a maximum tensile strength of 550 MPa. Furthermore, these samples showed more homogeneous behavior and lower scatter in the results than those bonded using an adhesive. These findings indicate that chemical surface treatment improves the quality of the metal–composite interface and enhances the overall mechanical performance of the laminates.