Dr. Mahmoud Mabrouk received his Ph.D. in Mechanical Engineering from the Beijing Institute of Technology of China. His research interests primarily focus on the field of mechanical vibrations and planetary gear transmission systems, with a specific emphasis on tooth profile modification technology and optimization. Dr. Mahmoud Mabrouk has published several research papers in reputable journals and has actively participated in national and international conferences. Currently, he holds the position of Assistant Professor in the Department of Mechanical Engineering at Pharos University of Egypt, where he is actively involved in teaching and mentoring graduate students.