Accession Number : AD0648359
Title : CROSS-CORRELATION IN STRUCTURAL VIBRATION.
Descriptive Note : Final technical rept.,
Corporate Author : MEASUREMENT ANALYSIS CORP LOS ANGELES CALIF
Personal Author(s) : White,Pritchard H.
Report Date : 31 JUL 1966
Pagination or Media Count : 102
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)
Descriptors : (*STRUCTURES, VIBRATION), (*CORRELATION TECHNIQUES, WAVE PROPAGATION), SOUND TRANSMISSION, NOISE, BANDWIDTH
Subject Categories : Acoustics
Distribution Statement : APPROVED FOR PUBLIC RELEASE