This book explores the growing use of natural fibers in engineering due to their sustainability, lightweight nature, and potential for high performance in sectors like automotive, aerospace, and construction. Fibers such as hemp, jute, flax, and kenaf offer advantages like low density, biodegradability, and cost-effectiveness, making them ideal substitutes for synthetic fibers like glass and carbon. Natural fiber reinforced composites (NFRCs) are increasingly used in automotive components to reduce weight and improve fuel efficiency. In aerospace, they contribute to lighter, stronger...