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论文类型：期刊论文

发表时间：2015-01-01

发表刊物：JOURNAL OF SENSORS

收录刊物：SCIE、EI、Scopus

卷号：2015

ISSN号：1687-725X

摘要：A damage location method based on cross correlation function, wavelet packet decomposition, and support vector machine was proposed for grid structure. The approximate damage positions in grid structures could be determined through the peak abrupt changes of the cross correlation function that was produced by two vibration responses of adjacent measuring points. The vibration response was decomposed into eight bands by wavelet packet in order to accurately locate damage rods. The energy distribution in eight bands was used as a feature vector. SVM is trained to locate damaged bar elements in grid structures. Numerical analysis results showed that this method had good accuracy.