The primary purpose of writing this book is to make available to the students and is prepared for case study projects. The mechanical characterization of composite materials is a vital role in industrial applications. In today's rapidly evolving world, the entanglement for environmental pollution and the prevention of non-renewable and non-biodegradable resources has intrigued experts seeking to develop new eco-friendly materials and products. Basically, the book is based on the intention of decreasing the environmental pollution by using the natural fibers for various industrial applications. This book deals with the fabrication of a composite material by the combination of two or more constituents which have different physical and chemical properties. The composite material mainly consists of two phases. They are matrix and reinforcement. The matrix is of three types such as polymer, metal, and ceramic (here we make use of polymer matrix). The advent of this book is to prepare the Composite specimens with and without nano-particles as per ASTM standards and found out the mechanical characterization of hybrid laminated composites.