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基于磁弹效应提出了采用电磁透射方式评价应力和残余应力的方法.针对冷轧带钢磁弹性应力测量方案设计了标定装置并以此对传感器输出特性展开了研究,阐述了其电磁应力检测原理.通过ANSYS有限元数值方法对标定装置结构承载能力进行了仿真分析,在此基础上,采用50 Hz的正弦交流的激磁系统研制了磁弹性应力测量系统样机,并通过搭建的测试平台对样机及标定块进行了单侧式与透射式两种实验方案的静态加载比较试验.试验结果表明:在标定块额定承载范围内,透射式磁测方案能够实现对钢板内应力的线性响应,为磁弹性应力测量技术的工业化应用开辟了一条新途径.
Based on the magneto-elastic effect, a method of using electromagnetic transmission to evaluate stress and residual stress is proposed.The calibration device is designed according to the magneto-elastic stress measurement scheme of cold-rolled strip and the output characteristics of the sensor are studied. The principle of electromagnetic stress detection Through the ANSYS finite element numerical method to carry on the simulation analysis to the bearing capacity of the calibration device structure, on this basis, uses the 50 Hz sinusoidal alternating current excitation system to develop the magnetoelastic stress measurement system prototype, and through the built test platform to the prototype and The experimental results show that within the scope of the rated load of the calibration block, the transmissive magnetic measurement scheme can achieve a linear response to the internal stress of the steel plate, and is a magnetocaloric Industrial application of stress measurement technology has opened up a new way.