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 Japanese Journal of Applied Physics, Research Member Abdelrasoul Mahmoud Mohamed Gadelmoula Research Rank 1 Research Vol Vol. 49 Research Year 2010