RAOUF A. IBRAHIM is a Professor of Mechanical Engineering at Wayne State University. From 1963 till 1971, he worked as a research engineer at the Aerospace Research Center of rockets industry in Egypt, then gained his PhD in Mechanical Engineering from the University of Edinburgh in 1974. From 1976 to 1979, he worked as a Senior Research Specialist at Sakr Factory in Cairo and worked as an Adjunct Assistant Professor at Cairo University. In 1979, he moved to the United States and worked at Shaker Research Corporation, before joining Texas Tech University in 1980 as Assistant, Associate, and then full Professor. In 1987, he joined Wayne State University and continued his research activities in nonlinear random vibration, liquid sloshing dynamics, friction-induced vibration, and flutter of aeroelastic structures. In 1994 he was named the Arthur Carr Professor of Engineering and in 1995 he was awarded the Board of Governors Outstanding Professor Award. He has published more than ninety papers in refereed journals, and a research monograph entitled Parametric Random Vibration (Wiley, 1985). He is a Fellow of ASME and Associate Fellow of AIAA.