Influence of rice husk ash Si3N4 ceramic on mechanical, wear and low cycle fatigue behavior of hybrid pineapple/basalt fiber reinforced polyester composite

This paper presents a comprehensive characterization of hybrid fiber and bioceramic reinforced polyester composites, focusing on their mechanical, fatigue, and flammability, creep, and water absorption properties. The investigation explores the influence of fiber stacking sequence and the integration of Si₃N₄ particles on the performance of the composites. Mechanical tests reveal significant enhancements in the tensile and flexural strength with variations in composition and stacking sequence. The alternating arrangement of basalt and pineapple fibers in the composites demonstrates synergistic reinforcement effects, while Si₃N₄ particle incorporation further improves mechanical properties. Fatigue testing highlights the role of Si₃N₄ particles in enhancing fatigue resistance, with composites exhibiting extended fatigue life. Creep behavior analysis indicates reduced creep strain with Si₃N₄ particle incorporation, emphasizing their role in enhancing creep resistance. Flammability testing underscores the influence of material composition on fire safety characteristics, with composites achieving varying self-extinguishing rates. Water absorption testing reveals increased water uptake in composites containing natural fibers, emphasizing the need for careful consideration of fiber composition in applications exposed to humid environments. SEM analysis provided insights into microstructural features and interfacial characteristics, revealing the presence of Si₃N₄ particles and fiber-related phenomena. Overall, this study provides valuable insights into the multifaceted performance of hybrid fiber and bioceramic reinforced polyester composites, offering implications for diverse engineering applications requiring elevated strength, durability, and fire safety in structural, defense, automotives, and drones.