Cross Correlation in Structural Systems: Dispersion and Nondispersion Waves
作者:
P. H. White,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1969)
卷期:
Volume 45,
issue 5
页码: 1118-1128
ISSN:0001-4966
年代: 1969
DOI:10.1121/1.1911582
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The use of cross correlation as a tool for analyzing propagation of energy in structural systems is investigated. Each energy‐transmission path will have a characteristic delay time, and examination of the cross‐correlation function of input and response can guide in the determination of the most significant path or paths. Difficulties occur in distributed systems or when the propagation is by a dispersive mechanism. The principles of correlation analysis are examined for both dispersive and nondispersive systems. Experimental evidence is presented that supports the theory and concepts developed. On the basis of these preliminary results, it appears that the technique holds promise and bears further investigation.
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