The difference of signals derived from the outside flaw and the inside flaw is analyzed, and the flaw recognition method is also discussed based on wavelet analysis.
同时，对小波变换后管壁内、外表面局部缺陷信号的特征进行分析，探讨了基于小波变换的内、外表面局部缺陷的分类方法。
In addition, the difference between the outside defect and the inside defect is studied, and the flaw recognition and classification method is discussed based on wavelet analysis.
另外，对小波变换后，内外表面缺陷信号的不同特征进行了分析，初步研究了内外伤分类的小波方法。
Alternative magnetic leakage flux method was developed from the eddy current testing and traditional magnetic leakage flux testing, and it was advantageous for surface flaw recognition.
交变漏磁检测方法由于兼具涡流检测和传统漏磁检测的特点，对表面缺陷具有很高的识别率。
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