Mechanical and Vibrational Studies on Hybrid Fibre Metal Laminates

Abstract:

Hybrid Fibre Metal Laminates (HFMLs) are composite materials made of alternating layers of metal and fibre-reinforced polymers. The paper discusses the development of HFMLs and their applicability in aerospace applications when compared to conventional FMLs. Experimental (Mechanical and vibrational) studies are conducted to assess the strength and vibrational properties of these materials. Mechanical and vibrational characteristics of the proposed materials are explored and presented. Aluminium 2024 T3 sheets as metal layer and hybrid (glass, carbon) polymer fibre reinforcements are used for developing hybrid lightweight laminates. SEM (scanning electron microscope), and stereomicroscopy are used for microscopic characterization studies and a universal testing machine (UTM) is employed to perform mechanical characterization. The impact behaviour of these materials is also disclosed using the Charpy impact test. An improvement in the strength and vibrational properties are clearly observed in the FMLs after fibre hybridization, which may be due to improved bonding compatibility in carbon prepregs. The outcome of the research contributes to the advancement of lightweight materials for next-generation aerospace structures.

• Periodical: Materials Science Forum (Volume 1149)
• Pages: 89-97
• DOI: https://doi.org/10.4028/p-Y37Ghi
• Online since: May 2025
• Authors: Naresh Kali, Nikesh Chelimilla, Srikanth Korla*
• Keywords: Charpy Test, DMA Analysis, Flexural, Hybrid FMLs, Tensile, Vibration Analysis

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