CROSS-CORRELATION IN STRUCTURAL VIBRATION.
Abstract
The use of cross-correlation as a tool for analyzing vibration in complex structures was examined. Starting from basic principles, the equations governing propagation of waves and the cross-correlation of these waves were generated. Dispersive and non-dispersive waves in single and multipath systems were examined. Based upon the theoretical results, and confirmed by laboratory experiments, it appears that cross-correlation performed in one-third or one octave frequency bands is a useful tool for examining structural noise and vibration transmission. Under some circumstances shaping of the spectra is necessary to assure a flat cross spectrum over the frequency band of interest. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1966
- Accession Number
- AD0648359
Entities
People
- Pritchard H. White