The book presents the advancements and innovations in the field of additive manufacturing and its applications in diverse sectors such as medical, automotive, agriculture, aviation, and food processing. It further addresses the cutting-edge breakthroughs in intelligence systems including artificial intelligence, machine learning, augmented reality, and learning algorithms, and their impact on welding, 3D printing, and smart materials. This book: • Covers hybrid mode of troubleshooting techniques in additive manufacturing, and data-driven intelligence for enhanced production. • Highlights the implementation of intelligent systems such as artificial intelligence, machine learning, augmented reality, and learning algorithms in additive manufacturing. • Discusses intelligent methodology for design, technology, and materials optimization for wire arc additive manufacturing. • Presents additive manufacturing applications in diverse areas such as agriculture, aviation, automotive, medical, and food processing. • Addresses the cutting-edge advancements in functionally graded materials within the realm of additive manufacturing. The text is primarily written for senior undergraduates, graduate students, and academic researchers in fields including manufacturing engineering, mechanical engineering, aerospace engineering, automotive engineering, industrial engineering, and production engineering.