This book is based on research focused on the latest applications of nonlinearities in engineering systems to improve performance, stability, and optimization, presenting updated principles and applications of nonlinear methods for solving engineering and physics problems. It focuses on the application of nonlinear approaches across different disciplines of engineering and science, with strong emphasis on their application, physical meaning, and methodologies. The book's chapters are written by world-class experts, and the selected topics are of great interest to engineers and physicists, exposing readers to a broad range of new issues and practical approaches that advance the future of engineering by discussing the development of more optimal, accurate, efficient, cost-effective, and energy-effective systems.