Reinforcing interlaminar interface of carbon fiber reinforced metal laminates by graphene

Wang S. Liu M. Araby S. Wang X. Abdelsalam A.A. Xue H. Meng Q.
1 May 2023 Elsevier Ltd

Composite Structures
2023 #311

Fiber metal laminas (FMLs) are disadvantaged by weak interlaminar strength limiting their application where dynamic loads are expected. In this study, graphene platelets (GnPs) were employed to strengthen the interlaminar interface in carbon fiber (CF) metal laminates. GnPs within range of 0–1 wt% were added into epoxy resin via ultrasonication. GnPs-based FML samples were prepared by wet lay-up method and tested under flexural loading, short beam shear and single lap shear. The reinforcing mechanism and failure modes were investigated. The results show that 0.5 wt% of GnPs increases the flexural strength and interlaminar shear strength by 39.7% and 53.2%, respectively. In addition, molecular dynamics (MD) simulations concluded that the addition of low content of GnPs increases the elastic modulus of the matrix and improves the resin adsorption on the surface of carbon fiber and Al sheets. The results from both the experimental and MD simulation indicate that adding GnPs can effectively improve the interlaminar mechanical properties of FMLs. In principle, the research method in this paper can be applied to the study of FMLs with other nanomaterials.

Flexural properties , FMLs , Graphene platelet , Interlaminar strength , Molecular dynamics simulation

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College of Aerospace Engineering, Shenyang Aerospace University, Shenyang, 110136, China
School of Mechanical Engineering, Northwestern Polytechnical University, Xian, 710072, China
College of Civil Aviation, Shenyang Aerospace University, Shenyang, 110136, China
School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Shenyang Aircraft Design Institute, AVIC, Shenyang, 110135, China
Department of Mechanical Engineering, Faculty of Engineering, Benha University, Benha, 13511, Egypt

College of Aerospace Engineering
School of Mechanical Engineering
College of Civil Aviation
School of Engineering and Digital Sciences
Shenyang Aircraft Design Institute
Department of Mechanical Engineering

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