J. Paulo Davim is Professor at the Department of Mechanical Engineering of the University of Aveiro and Head of MACTRIB - Machining and Tribology Research Group. He is Editor-in-Chief of six international journals, Guest Editor of journals, books Editor, book Series Editor and Scientific Advisory for many international journals and conferences.

• Chapter 1. Friction Stir Welding (Suman Kalyan Das).- Chapter 2. Fundamentals of friction stir welding, its application, and advancements (Atul Kumar Choudhary).- Chapter 3. Modelling of Friction Stir Welding Processes (N. Bhardwaj).- Chapter 4. An Application from a Defect - a Friction Stir Channeling Approach (Pooja Sarkar).- Chapter 5. Welding of Dissimilar Metals – Challenges and a Way Forward with Friction Stir Welding (Suryakanta Sahu).- Chapter 6. Microstructure and Texture in Welding: A Case Study on Friction Stir Welding (Soumya Sangita Nayak).- Chapter 7. Tubular Structures: Welding Difficulty and Potential of Friction Stir Welding (Debolina Sen).- Chapter 8. Industry 4.0 in Welding (Debasish Mishra).- Chapter 9. Comparative Study of Laser Weldability of Titanium Alloys (J.M. Sánchez-Amaya).- Chapter 10. A novel high efficiency Keyhole Tungsten Inert Gas (K-TIG) Welding: principles and practices (Yonghua Shi).- Chapter 11. Fatigue analysis of dissimilar metal welded joints of316L Stainless steel/ Monel 400 alloy using GTAW (Cherish Cherish Mani).- Chapter 12. Industrial pipeline welding (Spyros Papaefthymiou)