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The application of wavelet transform in magnetic flux leakage test of pipeline

Yang-Lijian, Fong-Haiying and Wong-Yumei
School of Information Science and Engineering, Shenyang University of Technology,Shenyang, China.



0 Introduction

1 The principle of testing by magnetic flux leakage [3]

2 Brief introduction of wavelet transform

3 Feature extraction of magnetic flux leakage signal of pipeline's flaw by tight supporting biorthogonal wavelet

4 Conclusion and expectation


  1. Cui-Jintai, 'an introduction to wavelets', Xi`an University of Traffic publisher, 1997,7~11,66~99
  2. M.Vetterli, Wavelet and filter bank, theory and design, IEEE Trans, SP-40 (9), 2207~2231,1992.
  3. Yu-Haoran, Wu-Bin, Chen-Liping, 'on-line technology of check and measure of oil and gas pipeline by magnetic flux leakage', practical measuring and testing techniques, 1997(5), 1~9
  4. Yang-Fusheng, 'wavelet analysis` project analysis and application', science publisher, 2000,1~5, 58~62, 95~106

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