Reduction of boundary effect during structural damage identification using wavelet transform

The wavelet transform seems to be effective tool for signal processing of modal data in the problems of structural damage detection and identification. However, the application of wavelet transform is connected with the occurrence of boundary effect, which may cause wrong conclusion about damage localization. In the following paper the problem of boundary effect was discussed and the methods of its reduction were presented. A comparative study of different approaches of the boundary effect reduction was performed and its results were analyzed.