null

论文期刊

论文标题    A guided wave dispersion compensation method based oncompressed sensing
作者    Cai-bin Xu, Zhi-bo Yang, Xue-feng Chen, Shao-hua Tian, Yong Xie
发表/完成日期    2018-06-14
期刊名称    Mechanical Systems and Signal Processing
期卷    103
相关文章    A guided wave dispersion compensation method based on compressed sensing.pdf   
论文简介    The ultrasonic guided wave has emerged as a promising tool for structural health monitoring (SHM) and nondestructive testing (NDT) due to their capability to propagate over long distances with minimal loss and sensitivity to both surface and subsurface defects. The dispersion effect degrades the temporal and spatial resolution of guided waves. A novel ultrasonic guided wave processing method for both single mode and multi-mode guided waves dispersion compensation is proposed in this work based on compressed sensing, in which a dispersion signal dictionary is built by utilizing the dispersion curves of the guided wave modes in order to sparsely decompose the recorded dispersive guided waves. Dispersion-compensated guided waves are obtained by utilizing a non-dispersion signal dictionary and the results of sparse decomposition. Numerical simulations and experiments are implemented to verify the effectiveness of the developed method for both single mode and multi-mode guided waves.
返回