Research on Fatigue-Magnetic Effect of High-Speed Train Wheelset Based on Metal Magnetic Memory
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In order to verify the feasibility of the metal magnetic memory detection method applied to the fatigue life evaluation of wheelset, the fatigue performance of the wheelset material 25CrMo4 under periodic loading with different loads is divided into two parts: simulation and test. The results show that the magnetic signal of 25CrMo4 steel increases with the increase in fatigue times under the corresponding fatigue load. In the simulation, when the number of fatigue increases from 3 million to 10 million, the normal component of the magnetic signal increases from −9.18 to 7.23 A/mm to −61.67 to 149.74 A/mm. The width is reduced from 18 to 6 Hz, and the amplitude average is increased from 30 to 820 A/mm. The intensity of the signal is increased, and the intensity is increased. The normal component of the magnetic signal has a similar change during the test.
KeywordsMetal magnetic memory method High-speed train Wheelset Fatigue analysis
The research work was supported by the National Natural Science Foundation of China under Grant No. 51405303, the Special Fund for the Selection and Training of Excellent Young Teachers in Shanghai Universities (ZZyy15110), and the Fund for the Development of Scientific and Technological Talents for Young and Middle-aged Teachers of Shanghai Institute of Technology (ZQ2019-21).
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