Abstract：The relationship between the reliable detection length of artificial groove damage on the surface of round rod and the width of magnetic flux leakage detection channel was analyzed. Moreover, the detection and determination of the defect signal under the condition of defect signal length suppression was also investigated. The formation of the detection signal caused by the depth variation of the natural defect and the application conditions of the length suppression of the defect signal were analyzed. The "uncertainty principle" of magnetic flux leakage detection of round rod was obtained, and the detection of natural defects on round rod was a probability event. Finally, the empirical measures to improve the reliability of magnetic flux leakage for surface defects of round rods were proposed.
胡柏上. 缺陷长度对圆棒漏磁检测结果的影响分析[J]. 物理测试, 2023, 41(3): 11-15.
HU Baishang. Analysis on influence of defect length on magnetic flux leakage test results of round rod. PHYSICS EXAMINATION AND TESTING, 2023, 41(3): 11-15.
2023, Vol. 41 
