Abnormality diagnosis of cracks based on wavelet analysis and cusp catastrophe model
Xuehong Li · 2005
An abnormality diagnosis model was developed for hydraulic concrete structures operating with cracks occurring in their bodies by use of the wavelet analysis and cusp catastrophe theory. In combination with observation data of dam cracks, the wavelet analysis method was adopted for extracting time-dependent deformation of cracks. Based on that, a grey cusp catastrophe model was established, and an abnormality criterion for crack diagnosis was put forward. The results show that the method is feasible and effective.