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Title: Structural damage detection using empirical mode decomposition and wavelet analysis : experimental investigation
Authors: Chen, J
Xu, Y 
Li, J
Keywords: Damage detection
Empirical mode decomposition (EMD)
Wavelet analysis (WA)
Issue Date: 2007
Publisher: 中国学术期刊(光盘版)电子杂志社
Source: 地震工程與工程振動 (Earthquake engineering and engineering vibration), 2007, v. 27, no. 1, p. 110-116 How to cite?
Journal: 地震工程與工程振動 (Earthquake engineering and engineering vibration) 
Abstract: This paper presents an experimental investigation on the applicability of empirical mode decomposition (EMD) and wavelet analysis (WA) for identifying the structural damage caused by a sudden change of structural stiffness. A series of free vibration, random vibration and earthquake simulation tests were performed in a three story shear building installed on a shaking table. Structural damage was simulated by suddenly releasing two pre-tensioned springs those were horizontally connected to the first floor of the building. EMD and WA were then applied to the measured acceleration histories to identify the damage instant and the damage location. The results show that the damage instant may be accurately detected in terms of the damage spikes extracted directly from the measurement data by EMD and WA, whilst the damage location may be determined by the spatial distribution of the spikes along the building.
ISSN: 1000-1301
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