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测量了动态直流磁场中退火与预应变状态下的铁和螺纹钢的微分磁化率曲线。根据磁畴壁运动唯象理论,得到残余应力分布曲线。
The differential magnetic susceptibility curves of iron and rebar in annealing and pre-strain state were measured in a dynamic DC magnetic field. According to the magnetic domain wall motion phenomenological theory, the residual stress distribution curve is obtained.