Experimental Studies on Application of Digital Image Correlation in Modal Parameter Identification
The accurate identification of modal parameters is the core content in the experiment modal analysis of structure. The effective and accurate collection of vibration dates comes to be as the premise of high precise identification. This paper presents a new method of data collection in modal parameter identification. By high-speed camera, time series images of vibration were obtained; Then, the images collected were processed using digital image correlation method, and the time-displacement graphic on vibration direction of some pixels selected was got; Finally ,the time-domain signal was postprocessed based on the complex Morlet wavelet transform, and the modal parameters were got. By a specific experiment, the method was proved feasible and effective.
Digital image correlation Modal parameter identification Wavelet transform High speed camera
Wei Hui Wang E Liang Dong Wei Zhang
Department of Engineering Mechanics, Southeast University, Nanjing 210096, China
国际会议
上海
英文
238-243
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）