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《JOURNAL OF NANJING UNIVERSITY OF AERONAUTICS & ASTRONAUTICS》 1997-01
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Detection of Location and Magnitude of Structural Damage Using Measured Model Data

Shi Zhiyu ; Luo Shaoxiang; Zhang Lingmi; Ding Xihong (Department of Aircraft Engineering, NUAA Nanjing, 210016)(Department of Civil and Structural Engineering, Hongkong Polytech University)  
A new method is proposed to detect the location and magnitude of damages in a structure by using incomplete and noisy measured modal data. The complete procedure consists of three parts:expansion of the measured mode shapes; localization of the damage domain using a concept of Local Frequency Change Ratio; damage quantification by a iterative process. For illustrating the effectiveness of this method, several damage cases in the GARTEUR structure are investigated. Results illustrate that the presented approach can simply and to effec tively locate and quantify damages in the structure.
【CateGory Index】: V214
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