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采用涡流法检测钢表面的缺损状况和裂纹深度.设计和制作了双线圈涡流传感器和检测电路.并确定了裂纹深度与响应电压的关系曲线.
The eddy current method was used to detect the defect status and the crack depth of the steel surface.The dual-coil eddy current sensor and the detection circuit were designed and fabricated, and the relationship between the crack depth and the response voltage was determined.