Aiming at the noise interference problems occurred in acoustic emission pipeline leakage detection,signal analysis method based on wavelet package and empirical mode decomposition(EMD) were researched,respectively.

To solve the problem of pipeline leak detection and meet the demand of student\'s learning,an experimental system of pipeline leak detection based on negative pressure wave and flow is established in the laboratory.

3-D imaging technology for determining defect of oil-gas pipeline in magnetic flux leakage testing;

AC and DC magnetizing for magnetic flux leakage testing;

Development and experimental result analysis of the magnetic flux leakage testing instrument;