Issue Section:Technical Brief
Keywords:strain measurement, vibrations
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received November 2001; Revised January 2002. Associate Editor: A. F. Vakakis.
Proper orthogonal decomposition (POD) is a useful experimental tool in dynamical systems, for example in dimensionality studies 1,2 and reduced order modeling 3,4,5,6. Application of POD in structural vibrations often involves sensed displacements, at M locations on the structure. These displacements are sampled N times at a fixed sampling rate to form displacement arrays The means are often subtracted. An ensemble matrix