Subsynchronous Vibration Problems In High-Speed, Multistage Centrifugal Pumps.

Ian Massey is Director of Engineering of the Pacific Pumps Division of Dresser Industries, Incorporated. Prior to join­ ing Dresser he held engineering posi­ tions in the pump businesses of Wormald International and Mather & Platt, Limited. Educated in the United Kingdom, he received the degree of Master of Engi­ neering from the University of Shef ield. He is a member of the Institution of Mechanical Engineers, and registered as a chartered engineer in the United Kingdom. Mr. Massey has authored several papers associated with pump design, and the financial justification of computer aided engineering. He has also contributed to books on the subjects of pumps and CAD/CAM.