Abstract
Fiber metal laminates (FMLs) were initially developed under the motivation of the aerospace industry. Generally, they consist of aluminum and high strength glass fiber in polymeric layers, but the new challenge is to apply them with a carbon fiber. Pretreatment of aluminum is the main factor responsible for the adhesion between metallic and polymeric layers. The shear strength test a very popular method in the experimental joint of two components. In this article, the main aim was to compare the surface pretreatment and configuration of fibers in FMLs based on aluminum with glass and carbon fibers. The decisive factor of strength in adhesive or cohesive failure is first the type of fibers, and second, the surface preparation.
Highlights
Fiber metal laminates (FMLs) consisting of metal sheets and fiber-reinforced composite layers were initially developed under the motivation of the aerospace industry in the middle of the last century [1].The most widespread are laminates consisting of aluminum and high strength glass fiber that are currently the main type of reinforcement used in laminates [2]
Due to the fact that withdrawing the processes based on hexavalent chromium compounds is recommended, positive results in the scope of the wetting angle and surface free energy obtained for anodizing process in sulfuric acidand (SAA) gave us hope that it will be possible to substitute the chromic acidand (CAA)
The main idea of this article was to show the mechanism of FML failures after single-lap joints (SLJs) tests
Summary
Fiber metal laminates (FMLs) consisting of metal sheets and fiber-reinforced composite layers were initially developed under the motivation of the aerospace industry in the middle of the last century [1].The most widespread are laminates consisting of aluminum and high strength glass fiber that are currently the main type of reinforcement used in laminates [2]. Glass fiber is characterized by low density, high fatigue strength, excellent static properties and high impact resistance, and by satisfactory corrosion resistance [3,4,5,6]. It can be expected that such laminates are characterized by high stiffness with good impact properties and great strength, constituting an advantage, especially for applications in space [1]. Low density and weight saving materials seem to be attractive thanks to the phenomena of bonding two completely different materials and the surface preparation. In this case, it is necessary to choose the correct surface pretreatment in order to obtain high strength properties at the interface between the polymer and metal layers. A review of the article written by Shang et al [8] showed those techniques applied to improve the strength of adhesive joints with composite
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