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基于裂纹漏磁场实验结果,分析磁化磁场强度、裂纹深度、裂纹宽度和裂纹埋藏深度对裂纹漏磁场的影响.阐述集成霍尔元件对局部漏磁场的检测特点及三维漏磁场信号的准确获取方法.集成霍尔元件和现代信息处理技术的结合可实现铁磁性材料的表面和近表面裂纹的自动定量检测.
Based on the experimental results of cracked magnetic flux leakage, the influence of magnetized magnetic field strength, crack depth, crack width and depth of crack on cracked leakage magnetic field was analyzed, and the detection characteristics of local magnetic flux leakage and the accurate acquisition method of three-dimensional leakage magnetic field were discussed. The combination of integrated Hall element and modern information processing technology enables the automatic quantitative detection of surface and near-surface cracks in ferromagnetic materials.