Visualization of Wavelet Result for Damage Detection in Arch

The more application of visualization techniques in medicine, geology and other fields is employed, but less use in structural damage detection area. The damage detection results in arch structure are visualized in this paper. First, the displacement modes of intact and damaged arch are simulated and the displacement mode changes are obtained. Next, the wavelet transformation is applied to the displacement mode changes in arch and the abrupt changes of wavelet coefficients indicate damage. Finally, the damage detection results are visualized via volume visualization techniques. The results show that wavelet coefficient module maximum of mode changes correspond to the damage placement and are influenced by damage location. At the same time, the visualized damage detection results not only contain the original structure outline, but also enable damage detection index to be displayed exactly and vividly.