Practical research on detecting cracks in pre-stressed pipe piles by wavelet analysis

The technical problem by using the time domain analysis and frequency domain analysis of the low strain method is that it can not accurately identify the micro-cracks in pipe piles. Based on the theoretical analysis, comparison tests on the model piles and verified method, the feasibility and reliability of the wavelet analysis identifying micro-cracks in pipe piles are studied by comparing of the time-frequency analysis and the wavelet analysis.