Impact behavior of natural fiber composites: A comprehensive review on theoretical and computational modeling

This paper presents a review of theoretical and computational modeling techniques for natural fiber composites (NFC) under impact loading. The behavior of NFC under impact loading remains a critical concern particularly in applications where structural integrity is of key concern. Despite the growing interest in natural fibers over synthetic fibers due to their superior specific strength, stiffness, lightweight nature, and cost-effectiveness, there remains a scarcity of review reports that specifically address the modeling of their impact loading behavior. Existing literature on the review of the impact behavior of NFC focused on the effect of hybridization, impact testing methods and influence of matrix material. Thus, the current literature review focuses on the utilization of modeling techniques on NFCs as it plays a crucial role in improving the design and performance of these composites. An overview of various theoretical models, including classical laminated plate and deformation theories are presented. Computational models such as finite-element analysis (FEA) employed in the impact mechanics of composite materials are also presented. This paper examines the impact behavior of NFCs, emerging areas in NFC, methods of enhancing the impact behavior of NFC with emphasis on the essential characteristics that must be considered before proceeding with modeling. The aim is to highlight the key theories and computational methods in this field and increase awareness among experts about ongoing research efforts, ultimately guiding future studies in the same area.