The principle of pulsed magnetic flux leakage testing(PMFL) is analyzed in this paper.

We proposed a detecting method based on pulsed magnetic flux leakage(PMFL).

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;

A way to improving accuracy and sensitivity of sucker rod crack using magnetic flux leakage inspection;

Methods of characterizing defects based on magnetic flux leakage inspection;

To the bad noise interference problem occurred in the signal of pipeline defect magnetic flux leakage inspection,the empirical mode decomposition(EMD) method developed recently was used to the noise suppressing and the effective signal extraction for the signals of magnetic flux leakage inspection.

Study on signal processing in magnetic flux leakage detection of oil pipe;

Impact of sensor liftoff on magnetic flux leakage detection in pipelines;

Transient simulation analysis on magnetic flux leakage detection of cracks in long-distance oil and gas pipeline

This paper introduces the application of modern signals processing technology in MFL signals processing based on the models of forward calculation and inverse calculation,and finally describes the direction of further research on MFL testing technology.

In MFL testing introduces this method and denoises the signal, the results are keep accord.