Research on Inductive Magneto - Acoustic Detection Method for Defects in Non - Ferromagnetic Materials

Urban rail transit is developing rapidly. Components of rail vehicles need to be strictly inspected to ensure safety. Non-ferromagnetic materials are widely used in urban rail transit due to their unique physical properties. They improve the reliability of the system by reducing electromagnetic interference, and are also economical and environmentally friendly. Since most non-ferromagnetic material components operate under harsh environmental conditions, cracks are likely to occur, which can have a huge impact on the safe operation of rail transit. Therefore, this paper conducts research on electromagnetic ultrasonic testing of non-ferromagnetic rail transit components. The principle of electromagnetic ultrasonic non-destructive testing is introduced. Through software simulation, aluminum is taken as the object to compare the situations with and without defects, verifying the feasibility of the testing method. Comparative experiments are carried out using aluminum blocks with and without defects, and the results further confirm the feasibility and effectiveness of this technology in the application of urban rail transit. This paper provides an effective testing method for non-destructive testing in the rail transit industry.