Nilesh. N. Kulkarni Ph.D. completed his M.E. (electronics and telecommunication) from All India Shri Shivaji Memorial Society’s Institute of Information Technology, Pune. His areas of interests include biomedical signal and image processing, pattern recognition, and machine learning. Presently, he is working on biomedical signal processing applications. He is a member of IETE and IEI, India and a member of the IEEE. Rajiv S. Mishra is a professor in the Department of Materials Science and Engineering, and Site Director, NSF IUCRC for Friction Stir Processing, at the University of North Texas. Dr. Mishra’s publication record includes 255 papers. Out of these, 10 of his papers have more than 100 citations. He has many ‘firsts’ in the field of friction stir welding and processing. He co-authored the first review paper (2005), co-edited the first book on the subject (2007), edited/co-edited seven TMS symposium proceedings, and served as guest editor for Viewpoint Set in Scripta Materialia (2008). He also has three patents in this field. He published the first paper on friction stir processing (2000) as a microstructural modification tool.