Stress Evaluation of SS275 Steel Using Magnetic Barkhausen Noise Characteristics

Magnetic Barkhausen noise (MBN) can be used to potentially detect fatigue, creep, stress, and hardness in ferromagnetic materials. Recently, non-destructive measurement equipment using MBN has been developed to measure the residual stress of railway rails in Korea. MBN has different characteristics depending on the type of ferromagnetic steel and residual stress. In this study, MBN signal characteristics based on the stress change of SS275 steel are experimentally analyzed using the developed MBN equipment. The results of this study can be used as basic data for estimating the residual stress of SS275 steel in the future.