Structural health monitoring by Lyapunov exponents of non-linear time series

被引：27

作者：

Casciati, F ^{[1
]}

Casciati, S ^{[1
]}

机构：

[1] Univ Pavia, Dept Struct Mech, I-27100 Pavia, Italy

来源：

STRUCTURAL CONTROL & HEALTH MONITORING | 2006年 / 13卷 / 01期

关键词：

dynamic system; Kolmogorov entropy; Lyapunov dimension; Lyapunov exponents; observed variables space; structural health monitoring;

D O I：

10.1002/stc.141

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, structural health monitoring is pursued by collecting multi-channel measurements and by computing, directly from them, the Lyapunov exponents. The latter quantities are invariants of the dynamic system, so that their different values, associated with different time histories obtained from the same structure, denote damage. First, the problem is framed in the general theory. The structural health monitoring strategy is then formulated, with special care being devoted to its capability of localizing damage. The procedure is finally validated by using the time histories which were collected during the experimental tests on the model of a monumental arch. Copyright (c) 2005 John Wiley & Sons, Ltd.

引用

页码：132 / 146

页数：15

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