The signal characteristic of single and mass broken wires is investigated and the testing signal is analyzed in the experiments.
实验研究了单根断丝和集中断丝的漏磁信号特征。
Normalization method of ultrasonic testing signal, the advantages and disadvantages of time domain, frequency domain were discussed.
探讨了超声波检测信号归一化处理的方法，以及时域信号归一化和频域信号归一化的优缺点。
Testing signal is very sensitive to the lift off effect in the hardness nondestructive testing of rail surface by electromagnetic method, so lift off effect must be restrained.
电磁无损检测钢轨踏面硬度中，检测信号对提离效应极其敏感，所以必须对提离效应加以抑制。
Testing signal is very sensitive to the lift off effect in the hardness nondestructive testing of rail surface by electromagnetic method, so lift off effect must be restrained.
电磁无损检测钢轨踏面硬度中，检测信号对提离效应极其敏感，所以必须对提离效应加以抑制。
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