Ioan D. Marinescu is Professor and Director of the Precision Micromachining Center at The University of Toledo, Ohio, USA, and CEO of Advanced Manufacturing Solutions, LLC. His research interests include manufacturing processes, grinding, tribology, advanced materials, and machining of brittle materials.W. Brian Rowe is Consulting Director and Emeritus Professor of Mechanical Engineering at Liverpool John Moores University, Liverpool, UK. He is also former Director of the Advanced Manufacturing Technology and Tribology Research Laboratory. Professor Rowe is a widely respected researcher in the fields of tribology and grinding. He has authored many books on grinding and grinding machine technology, also on bearing analysis and design.Boris Dimitrov is a Consulting Engineer in mechanics and chemistry, former Chief Scientist of the Romanian Research Institute of Applied Mechanics, and a former member of the Romanian Institute for Precision Mechanics in Bucharest.