RELIABILITY ENHANCEMENT OF HYBRID EPOXY COMPOSITE FOR LIGHTWEIGHT ENGINEERING APPLICATIONS BY RESPONSE SURFACE METHODOLOGY

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In recent years, growing attention to environmental and sustainability concerns in engineering materials has led to increased interest in natural fiber-reinforced composites (NFRCs), owing to their numerous benefits, like high specific properties, sustainability, biodegradability, and lightweight structure. In this work, the effect of stacking, fiber orientation, and weight % concentration of NaOH (alkali treatment) on the tensile strength of the hybrid composite has been studied. The study confirms that stacking sequence is the most influential factor affecting the tensile strength of hybrid epoxy composites, followed closely by fiber orientation. At the same time, the concentration of NaOH treatment plays a comparatively minor role. Among the stacking sequences, those incorporating hemp fiber as the outer layer consistently outperformed others, establishing hemp as the optimal skin layer reinforcement for maximizing tensile performance. By optimizing stacking sequence, particularly with the use of S1 at a 0° orientation and 5 wt.% alkali treatment, a significant improvement in the tensile strength of the hybrid epoxy composite is achieved. These enhancements not only improve the material’s structural integrity but also enhance the overall performance of the system in which the composite is used. Specifically, in the context of automotive applications, the improved strength, combined with the composite’s sustainability, lightweight nature, and contribution to better fuel efficiency, makes it a superior and environmentally friendly option for interior components. The results establish the hybrid epoxy composite as a high-performance and sustainable material solution for modern automotive interior systems.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.