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):

Report Date:

1966-07-31

Pagination or Media Count:

102.0

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

Subject Categories:

  • Acoustics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE