Abstract
With the aim of simulating the real conditions during the navigation, in this framework, impact tests were performed by loading CFRP laminates immersed in the water from the front side. The specimens, made by vinyl ester matrix because of the lower moisture absorption compared to the other epoxy systems, are in the presence of the water to accurately simulate the incidental impact on the hull of the vessel, immersed or partially immersed, during the navigation. It can be caused by the ice in the Arctic Ocean, by a projectile due to a terroristic attack or by debris from an explosion. The results are compared with the ones obtained by loading the laminates in pure traditional impact tests in the air. The influence of the clamping device has been tested too. The exciting results obtained on carbon fiber laminates in the air (pure traditional impact tests), water-backed (with water on the back side) and waterfront (water only on the front side) conditions at room temperature are here reported and compared. They highlighted the critical role played by the complex fluid–structure interaction.
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The authors gratefully acknowledge the ONR Solid Mechanics Program, in the person of Dr. Yapa D. S. Rajapakse, Program Manager, for the financial support provided to this research.
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This article is an invited submission to JMEP selected from presentations at the International Symposium on Dynamic Response and Failure of Composite Materials (Draf2018) held June 12–15, 2018, on the Island of Ischia, Italy, and has been expanded from the original presentation.
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Lopresto, V., Langella, A. & Papa, I. Interaction of Water with Carbon Fiber Reinforced Polymer Laminates under Dynamic Loading Conditions. J. of Materi Eng and Perform 28, 3220–3227 (2019). https://doi.org/10.1007/s11665-019-03915-5
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DOI: https://doi.org/10.1007/s11665-019-03915-5