Micromechanics of FRP Composites and the Analytical Approach for Ballistic Response

This book chapter discusses the micromechanics of Fiber-Reinforced Polymer (FRP) composites, primarily focusing on their analytical approach in the context of ballistic response. It begins with an introduction to set the stage and then explores the fundamentals of micromechanics, including the transfer of loads between fibers and matrices, unidirectional reinforcement, and the behavior of discontinuous fibers. The chapter delves into the damage mechanisms that occur when composite structures are exposed to ballistic impacts. These mechanisms include the formation of cones on the target's back face, energy absorption through the deformation of secondary yarns, energy absorption due to the tensile failure of primary yarns, and energy absorption through shear plugging. Additionally, the chapter addresses other mechanisms through which energy is absorbed in these scenarios. These elements are crucial in evaluating the ballistic performance of FRP composites and understanding the underlying physics of impact. Furthermore, the chapter presents an analytical formulation specifically designed for woven fabric composites, offering a comprehensive understanding of their response to ballistic impacts. By combining theoretical insights with practical applications, this chapter equips researchers, engineers, and materials scientists with the knowledge needed to optimize the ballistic performance of FRP composites. Overall, the chapter's comprehensive approach to the micromechanics of FRP composites, coupled with its analytical focus on ballistic response, makes it an invaluable resource for those seeking to explore and advance the capabilities of these materials in various applications.