Accession Number : ADP000344

Title :   Vibration Analysis of a Spinning Disk Using Image Derotated Holographic Interferometry,

Corporate Author : AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : MacBain,J. C. ; Horner,J. E. ; Stange,W. A. ; Ogg,J. S.

Report Date : JUN 1982

Pagination or Media Count : 7

Abstract : The present work reports on the application of image derotated holographic interferometry to study the resonant response of a rotating steel disk at speeds up to 8000 RPM. The rotational motion of the disk is optically removed by passing the image of the rotating disk through a prism that is traveling at half the rotational speed of the disk. Off-axis double-pulsed laser holography is then used to record the disk resonant vibratory response. The first five diametrical modes and one of disk imbalance, misalignment of optical and mechanical axes of rotation and system-excited modes of vibration are also addressed. Selected experimental results are compared to those obtained using finite element analysis. (Author)

Descriptors :   *Optical interferometers, *Holography, Nondestructive testing, *Turbomachinery, Disks, Vibration, Spinning(Motion), Misalignment, Images, Rotation

Distribution Statement : APPROVED FOR PUBLIC RELEASE