Composite materials are essential for modern engineering, offering an optimal balance between lightweight properties, mechanical strength, and performance under extreme conditions. This book provides a clear and well-documented overview of these advanced materials, covering both theoretical aspects and practical applications. A wide range of composite types is presented, including thermoplastics and thermosets, as well as innovative materials such as shape-memory composites and highly deformable materials. Modern methods of structural testing and analysis, such as finite element simulation and non-destructive techniques, are also included. Aimed at researchers, engineers, and students, this book is a valuable resource for anyone seeking to understand the role of composites in future technologies.