WANG Yua,b,YUAN Shenfang a,*,QIU Lei a a College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China b School of Information and Science,Nanjing Audit University,Nanjing 210029,China
Abstract:
Piezoelectric sensor array-based spatial filter technology is a new promising method presented in research area of structural health monitoring (SHM) in the recent years. To apply this method to composite structures and give the actual position of dam-age, this paper proposes a spatial filter-based damage imaging method improved by complex Shannon wavelet transform. The basic principle of spatial filter is analyzed first. Then, this paper proposes a method of using complex Shannon wavelet transform to const...