Application of wavelet transform to defect detection of building's structure

Abstract

Various methods can be used to detect the defects of structures. In this paper wavelet transform method is used. Continuous wavelet transform (CWT) is applied to vibration signal analysis of building's construction with defect. The results, which were obtained by modelling the changes in data pattern assuming that the building's construction element lost its stability, i.e. defect emerged, and by applying different wavelets, showed that this method is suitable for diagnostics of defects in the construction. With the CWT analysis, buildings construction's defects were detected according the frequency characteristics, also determining time moment of defect appearance.