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Local measurement for structural health monitoring
Localized nature of damage in structures requires local measurements for structural health monitoring. The local measurement means to measure the local, usually higher modes of the vibration in a structure. Three fundamental issues about the local measurement for structural health monitoring including (1) the necessity of making local measurement, (2) the difficulty of making local measurement and (3) how to make local measurement are addressed in this paper. The results from both the analysis and the tests show that the local measurement can successfully monitor the structural health status as long as the local modes are excited. Unfortunately, the results also illustrate that it is difficult to excite local modes in a structure.Therefore, in order to carry structural health monitoring into effect, we must (1) ensure that the local modes are excited, and (2) deploy enough sensors in a structure so that the local modes can be monitored.
作 者： G.Z.Qi Guo Xun Qi Xiaozhai W. Dong P.Chang 作者单位： G.Z.Qi(InfraTech, Inc. Silver Spring, Maryland, USA)Guo Xun,Qi Xiaozhai(Instutute of Engineering Mechanics, CEA, Harbin, China)
W. Dong(Risk Management Solution, San Francisco, California, USA)
P.Chang(Department of Civil Engineering, University of Maryland/College Park, USA)
刊 名： 地震工程与工程振动（英文版） SCI 英文刊名： EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION 年，卷(期)： 2005 4(1) 分类号： P315 关键词： structure health monitoring local measurement local modes higher modes local modes excitation sensors structural vibration【Local measurement for structural hea】相关文章：
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