Bending wave propagation in rotating objects measured by pulsed TV holography.
Transient bending waves in a rotating hard disk is measured by means of pulsed TV holography. The speckle motion in the detector plane caused by the rotation is compensated for in the interference phase evaluation. The technique is all electronic and needs no image derotator.
Gren
Per
P
Division of Experimental Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden. Per.Gren@mt.luth.se