Study on mechanical property of the hybrid composites from natural fibres by numerical and experimental method.

• DOI: https://doi.org/10.22533/at.ed.00024030513

• Palavras-chave: -

• Keywords: hybrid composites, finite element method, natural fibres, mechanical testing

• Abstract: The application of lignocellulosic fibers as reinforcements in composite materials has found increasing use in recent years, due to the attractive characteristics of natural fibers such as their low cost, high specific modulus, biodegradable, abundant and with many technical qualities. The hybridization of natural fibers can improve the physical, mechanical and thermal properties of composites. Natural fiber hybrid composites are very frequently used in the automotive industry. In this work, a computational and experimental analysis is carried out with the objective of comparing curauá fibers, jute and sisal fibers used in epoxy resin matrix composites for use in industry, determining the most appropriate hybridization effect by establishing the proportions and amounts of each fiber in a hybrid composite with better mechanical properties. To carry out the research, the Finite Element Method was first used, performing several models with different amounts of fibers which were later validated with mechanical tests. The number of Finite Element models and specimens performed was determined through the design of experiments using the Taguchi Method. As a result of the work, a greater strength of the hybrid composites made with greater amount of curauá fiber (20%), jute (10%) and lesser of Sisal fiber (5%) was obtained, both in the results obtained by the Finite Element Method and in the mechanical tests.