Time-frequency analysis in structures monitoring subject to extreme dynamic loads

被引：0

作者：

Popescu, Theodor D. ^{[1
]}

机构：

[1] Natl Inst Res & Dev Informat, Res Dept, Bucharest 011455, Romania

来源：

MATHEMATICAL METHODS AND COMPUTATIONAL TECHNIQUES IN RESEARCH AND EDUCATION | 2007年

关键词：

time-frequency analysis; short-time Fourier transform; spectrogram; Wigner-Ville distribution; Choi-Williams distribution; reduced interference distribution; earthquake signals;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

The structures monitoring subject to actions produced by extreme dynamic loads (earthquakes, strong wind, tornados, sea waves etc.) need to account for temporal evolution of their frequency content. Separate time analysis and frequency analysis by themselves do not fully describe the nature of these dynamic loads. As consequence, it is required to develop and use some non-stationary spectral analysis techniques. Significant efforts in order to permit the temporal evolution of non-stationary spectral characteristics representation have been done in the last years. The objective of this paper is to present some techniques currently available with possible application in earthquake engineering. Finally, some experimental results obtained in the analysis of the earthquake records during the Vrancea seism, August 1986, Romania, are presented.

引用

页码：58 / +

页数：3