Passive-damping of the Axial Run-out for High Speed Rotating Flexible Disk Using the Idea of Damping Orifice. Research Authors Abdelrasoul M. M. Gad , Yoon Chul Rhim Research Journal Proceedings of the International Symposium on Optical Memory Nagasaki, Japan Research Member Abdelrasoul Mahmoud Mohamed Gadelmoula Research Rank 3 Research Year 2009