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Research on surface defect detection method of steel parts based on barkhausen effect

Safety issues caused by material defects have always been a hot issue that has attracted much attention. How to realize rapid and accurate identification of material defects is the focus of research on material defects today. Barkhausen noise measurement is a new material performance testing technology, which is suitable for ferromagnetic materials and is sensitive to many characteristics of the material. This paper builds a Barkhausen inspection system to detect and quantitatively analyze the defects of different widths and depths in ferromagnetic materials and explore the influence of different excitation parameters of the inspection system on the Barkhausen signal.