Journal of shanghai Jiaotong University (Science) ›› 2012, Vol. 17 ›› Issue (5): 605-612.doi: 10.1007/s12204-012-1332-7

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Research on Magnetomechanical Coupling Effect of Q235 Steel Member Specimens

Research on Magnetomechanical Coupling Effect of Q235 Steel Member Specimens

XIONG Er-gang1* (熊二刚), WANG She-liang2 (王社良), MIAO Xiao-yu1 (苗晓瑜)   

  1. (1. School of Civil Engineering, Chang’an University, Xi’an 710061, China; 2. School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China)
  2. (1. School of Civil Engineering, Chang’an University, Xi’an 710061, China; 2. School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China)
  • Online:2012-10-30 Published:2012-11-16
  • Contact: XIONG Er-gang1* (熊二刚) E-mail:x-e-g@163.com

Abstract: In this study, magnetomechanical coupling tests were performed on Q235 solid round steel model specimens in NIM-200HF magnetomechanical coupling equipment. Hysteresis loops were obtained in different magnetic fields and stresses. Magnetization curves were also achieved at different stresses. Influence of the applied stresses on the hysteresis loops was investigated. The stress sensitive region and linear stress sensitive region of magnetic induction were determined for the model specimen according to the experimental data. The dependence relation of magnetic induction versus applied stresses was established, and the optimum magnetic field was determined in the stress sensitive range of magnetic induction, which builds a basis for nondestructive testing (NDT) of stress with the total magnetic flux for steel structure. Based on modified Jiles-Atherton’s model of magnetic hysteresis, the hysteresis loop for Q235 steel 4-mm diameter model specimen was numerically simulated, which was well consistent with the experimental results.

Key words: magnetomechanical coupling tests| magnetic hysteresis loops| stress sensitive region| magnetic induction| total magnetic flux| nondestructive testing (NDT)| magnetic hysteretic model

摘要: In this study, magnetomechanical coupling tests were performed on Q235 solid round steel model specimens in NIM-200HF magnetomechanical coupling equipment. Hysteresis loops were obtained in different magnetic fields and stresses. Magnetization curves were also achieved at different stresses. Influence of the applied stresses on the hysteresis loops was investigated. The stress sensitive region and linear stress sensitive region of magnetic induction were determined for the model specimen according to the experimental data. The dependence relation of magnetic induction versus applied stresses was established, and the optimum magnetic field was determined in the stress sensitive range of magnetic induction, which builds a basis for nondestructive testing (NDT) of stress with the total magnetic flux for steel structure. Based on modified Jiles-Atherton’s model of magnetic hysteresis, the hysteresis loop for Q235 steel 4-mm diameter model specimen was numerically simulated, which was well consistent with the experimental results.

关键词: magnetomechanical coupling tests| magnetic hysteresis loops| stress sensitive region| magnetic induction| total magnetic flux| nondestructive testing (NDT)| magnetic hysteretic model

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