Structural damage identification by flexibility change: a review

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (12) : 147-153.

论文

Structural damage identification by flexibility change: a review

Yang Qiu-wei1; Liu Ji-ke2

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Abstract

Structural damage identification using measured static or dynamic data has emerged as a new research area in civil, mechanical and aerospace engineering communities. A large number of approaches have been proposed for detecting structural damage in recent years. In these existing approaches, the flexibility-based method is one of the promising techniques since the flexibility can be constructed easily from the measured static or lower frequency modes and is very sensitive to structural damage. This paper presents a general summary and review of the flexibility-based damage identification methods in the past two decades. These flexibility-based techniques can be divided into six groups by the different calculation methods and data used. The basic idea of each group is briefly illustrated and the main formulas are given, respectively. The advantages and shortcomings of these approaches are also discussed and compared in detail. In the end, several key issues related to flexibility-based damage identification methods are emphasized and future study aspects are pointed out.