Professor Farrahi gained his doctorate degree at Arts et Metier, Paris Tech (ENSAM) in 1985. After having spent a few months in England he returned to Iran and joined Bu-Ali Sina University. There he founded the Department of Mechanical Engineering and became Dean of the Faculty of Engineering from 1986 to 1989. In 1990 he went back to England and joined the Structural Integrity Research Institute of University of Sheffield (Sirius) where he worked alongside the late Professor Keith Miller. In 1992 on his return to Bu-Ali Sina University he expanded the Faculty of Engineering as Dean of the Faculty. Professor Farrahi joined the School of Mechanical Engineering at Sharif University of Technology in 1997. He has previously held posts at Sharif as Head of Applied Design Division and Chairman of the School of Mechanical Engineering. He has been in collaboration with University of Bristol, Brunel University and Cranfield University as Visiting Professor. He also was the co-founder of Golpayegan Faculty of Engineering where he was the Chairman from 2001 to 2005. During his academic carrier, he has led a number of research projects in the area of structural integrity assessment. he has published more than 240 papers and supervised 20 PhD and 72 MSc students.