Dynamic features are often used for structural damage diagnosis. Besides the features from the modal analysis, some other features describing the wave propagation in the structure are usually concerned, like the wave's intensity, speed, etc. In the data processing of experiment on the pre-stressed concrete (PC) box girders with artificial damages, the max-peak and max-peak-time, two of the basic features of time series will be investigated and analyzed in reconstruction combination matrices to investigate the global information of the update of structural status respectively, which are corresponding to the speed and intensity of the wave propagation separately. In all stages of vibration experiment, curve of distance/2-D correlation coefficient of the max-peak-time and max-peak matrices can have very clear tendencies to demonstrate the global damage happened in the PC box girder, which are better than some modal features in modal analysis using the same original data.
|ジャーナル||Measurement: Journal of the International Measurement Confederation|
|出版ステータス||Published - 2020 2月|
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