Dr. Rupinder Singh is Professor in Production Engineering at Guru Nanak Dev Engineering College, Ludhiana (India). He has published around 350 research papers (in reputed Journals and conferences), 17 monographs, 20 chapters and supervised 10 Ph.D Theses and 90 Master’s Theses (h-index 20+). His area of interest is rapid manufacturing, casting and welding. Dr. J. Paulo Davim is Professor at the Department of Mechanical Engineering of the University of Aveiro. He has about 30 years of teaching and research experience in manufacturing, materials and mechanical engineering with special emphasis in Machining & Tribology. Recently, he has also interest in Management/Industrial Engineering and Higher Education for Sustainability/Engineering Education. He is the Editor in Chief of eight international journals, Guest Editor of journals, books Editor, book Series Editor and Scientific Advisory for many international journals and conferences. Presently, he is an Editorial Board member of 30 international journals and acts as reviewer for than 80 prestigious Web of Science journals. In addition, he has also published as author and coauthor more than 10 books, 60 book chapters and 350 articles in journals and conferences (more 200 articles in journals indexed in Web of Science, h-index 35+ and SCOPUS 43+).