文献类型：期刊文献

英文题名：A Universal Fast Algorithm for Sensitivity-Based Structural Damage Detection

作者：Yang, Q. W.[1];Liu, J. K.[2];Li, C. H.[1];Liang, C. F.[1]

机构：[1]Shaoxing Univ, Dept Civil Engn, Shaoxing 312000, Peoples R China;[2]Sun Yat Sen Univ, Dept Mech, Guangzhou 510275, Guangdong, Peoples R China

年份：2013

卷号：2013

外文期刊名：SCIENTIFIC WORLD JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000328994700001)、、Scopus(收录号：2-s2.0-84893828938)、WOS

基金：This work is supported by National Natural Science Foundation of China (nos. 11202138 and 11272361) and Zhejiang Province Natural Science Foundation (no. Y1110949).

语种：英文

外文摘要：Structural damage detection using measured response data has emerged as a new research area in civil, mechanical, and aerospace engineering communities in recent years. In this paper, a universal fast algorithm is presented for sensitivity-based structural damage detection, which can quickly improve the calculation accuracy of the existing sensitivity-based technique without any high-order sensitivity analysis or multi-iterations. The key formula of the universal fast algorithm is derived from the stiffness and flexibility matrix spectral decomposition theory. With the introduction of the key formula, the proposed method is able to quickly achieve more accurate results than that obtained by the original sensitivity-based methods, regardless of whether the damage is small or large. Three examples are used to demonstrate the feasibility and superiority of the proposed method. It has been shown that the universal fast algorithmis simple to implement and quickly gains higher accuracy over the existing sensitivity-based damage detection methods.