Abstract
The bonding of metal sheets and Fiber-reinforced composites is called Fiber Metal Laminates (FML). In the current work, Polyurethane (PU) foam is inserted as a core material in FML, and E-Glass fibers enclose it. The exterior layers are of aluminum alloy 2024 sheets bonded by nanofiller dispersed in an epoxy resin matrix. The nano-silica is used as nanofillers dispersed in the epoxy resin matrix. Nano-silica of 1wt.% is used with epoxy for fabricating the NFML (Nano Fiber Metal Laminate). Laminates are fabricated by hand lay-up and compression molding at 180 MPa at 70 °C. The laminates are tested under low-velocity impact test using a drop weight impactor at different energy levels of 60 J, 80 J, and 90 J for a specimen size of 150 mm x 150 mm. The failure modes of aluminum sheet, PU Foam, and Composite laminate are studied. The results are compared between FML with and without nano-silica. The effect of nano-silica becomes significant in the laminate from 90 J impact energy. Below that, the pristine FML has a high impact force and withstands the impact load effectively. The failure sign of dent depth, delamination area on the rear side, and peak impact load are measured.
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Acknowledgements
The authors would like to thank the All-India Council for Technical Education (AICTE), New Delhi, India for the research grant under the RPS-NDF scheme (8-24/RIFD/RPS-NDF/Policy-1/2018-19).
Declaration of Conflicting Interest
The authors declare that there is no conflict of interest.
Data Availability Statement
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Vijayan, M., Selladurai, V., Vijay Kumar, V., Balaganesan, G., Marimuthu, K. (2024). Low-Velocity Impact Response of Nano-Silica Reinforced Aluminum/PU/GFRP Laminates. In: Velmurugan, R., Balaganesan, G., Kakur, N., Kanny, K. (eds) Dynamic Behavior of Soft and Hard Materials Volume 1. IMPLAST 2022. Springer Proceedings in Materials, vol 34. Springer, Singapore. https://doi.org/10.1007/978-981-99-6030-9_38
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DOI: https://doi.org/10.1007/978-981-99-6030-9_38
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