Abstract
Natural materials have become quite common in recent years and are a major concern of the scientific community. In this sense, lignocellulosic fibers as substitutes for various synthetic reinforcements in polymer composites have shown great potential for technological applications. In particular, the applicability designated in this work are ballistic panels in which reliability, weight reduction, cost reduction and material sources are critical points for evaluation. Thus, the present work aimed to evaluate the impact energy of the epoxy matrix composite reinforced with 40 vol% of fique fabric in the natural aging condition for 2,160 h (90 days). As main results, a significant degradation by photo-oxidative process was observed, as well as the appearance of micropores with concave shape and epoxy matrix microcracks. The energy absorption decreased by ~53% for Charpy test and ~12% for Izod test after the weathering of 2,160 h compared to the non-aged composite. Weibull shape parameter increased after the aging, indication of a premature failure issue. Different behavior between the Charpy and Izod tests was pointed out by ANOVA, suggesting the interference of sample size and exposure area.
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Acknowledgements
The authors thank the Brazilian agencies CAPES, FAPERJ and CNPq for the financial support. The authors are also grateful to the institutions that contributed to this research: IME and UENF.
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Oliveira, M.S., da Luz, F.S., Pereira, A.C., Simonassi, N.T., Nascimento, L.F.C., Monteiro, S.N. (2023). Weather Aged Fique Fabric Reinforced Epoxy Composite: Impact Property Analysis. In: TMS 2023 152nd Annual Meeting & Exhibition Supplemental Proceedings. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22524-6_74
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