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介绍双频涡流检测传感器的工作原理、设计和制作 ,验证了根据阻抗图幅度和相位分析判定缺陷技术优点
This paper introduces the working principle, design and manufacture of dual-frequency eddy current sensor and verifies the advantages and disadvantages of the method to determine the defect according to the magnitude and phase of the impedance diagram