Professor Helmi A. Youssef, born in August, 1938 in Alexandria, Egypt, has acquired his B.Sc. in Production Engineering, Alexandria University in 1960. He completed then his scientific building in Carolo-Welhelmina, TH Braunschweig in Germany, during the period 1961-1967, where he acquired his Dipl.-Ing., and Dr.-Ing. Degree in the domain of Non-traditional Machining. In Alexandria University, he has been promoted to associate, then since 1978 to full professor. In the period 1995-1998, professor Youssef was the chairman of the Production Engineering Dept., and since 1989, he was a member of the scientific committee for promotion of professors in Egyptian Universities.  Between 1975 and 1998, he was a visiting professor in many Arab, and German Universities. He established his own laboratories, and supervised many M.Sc. and Ph D theses. Professor Youssef has organized and participated in international conferences. He has published many scientific papers in specialized journals, and authored books in his fields of specialization; two of which have been published by CRC, on machining and manufacturing technologies, in 2008, and 2011, respectively. Currently, Prof. Youssef is Emeritus Professor in PED, Alexandria University.