International Science Community Association Research Journal of Engineering Sciences 2278-9472 12 2 2023 05 26 Experimental research on the mechanical characteristics of fiber-reinforced hybrid polymer composites 8 21 EN Sharma N.K. 1 Department of Electronics and Communication Engineering, Baba Sahab Dr. B.R. A. College of Agril. Engg. and Technology, Etawah-206001, UP, India Varshney Hemant Kumar 2 Department of Electronics and Communication Engineering, National Institute of Technology Delhi, Delhi, India Zaman Haydar U. 1 Department of Physics, National University of Bangladesh and Senior Researcher of Institute of Radiation and Polymer Technology, Bangladesh 1Atomic Energy Commission, P.O. Box-3787, Savar, Dhaka, Bangladesh Khan Ruhul A. 2 Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, P.O. Box-3787, Savar, Dhaka, Bangladesh > Research Paper 2022 12 31 2023 05 26 Materials that are renewable, biodegradable, and natural are intended to replace synthetic ones in current research. Due to its unique attributes and environmental friendliness, natural fiber composites are a hot topic of research. Natural fibers are more accessible, manageable, and biodegradable than synthetic fibers, giving them an edge. Assessing changes in the mechanical characteristics of polypropylene reinforced with chopped pineapple leaf and abaca fiber is the aim of the current investigation. Additionally, the impact of the fiber's chemical processing, content, and ratio on its mechanical characteristics was examined. In Bangladesh, there are numerous sources of fiber, including abaca and pineapple leaves. Abaca fiber and pineapple leaf were both chemically processed with 5% sodium hydroxide (NaOH). In order to create uneven and discontinuous structures, hybrid polypropylene composites reinforced with pineapple leaf and abaca fiber were created via compression molding. It ranged from 3:1 to 1:1 to 1:3 in terms of the ratio of pineapple leaf fibers to abaca fibers. Percentages of 5, 10, 15, and 20% fiber loading were used. When reinforcing of polypropylene with 5 wt% pineapple leaf and abaca fiber was done in a 3:1 ratio, the best set of mechanical properties were obtained. However, fiber reinforced composites that had been treated with NaOH showed superior mechanical properties over untreated composites. Copyright@ International Science Community Association