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ADAPTIVE DEVICE eddy current to detect and measure surface and subsurface cracks in parts made of conductive materials
ADAPTIVE DEVICE eddy current to detect and measure surface and subsurface cracks in parts made of conductive materials
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机译：自适应设备涡流，用于检测和测量由导电材料制成的零件中的表面和亚表面裂纹
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摘要
The invention relates to the means of nondestructive testing based on the eddy current method, and is used for flaw detection in metal products engineering, the aircraft industry, rail transport for the detection and measurement of surface and subsurface cracks in the details of various materials. SUMMARY OF THE INVENTION introduced shaper auxiliary frequency controlled bandpass filter, an additional channel amplitude dummy frequency measurement signal, consisting of series-connected amplitude detector and analogue-digital amplitude signal converter, an additional channel phase auxiliary frequency measurement signal, consisting of serially connected phase detector and an analog Numeric converter phase signal. The present invention eliminates the influence of electromagnetic properties of the test object material indication device to produce defect measurement values directly in metric units, control any non-magnetic and ferromagnetic materials, to increase the sensitivity of the device to improve control accuracy by eliminating false positives.
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