Evaluation of Metal Plastic Deformation Using Radio-frequency Reflection Features

Abstract

Abstract: This paper proposed a method resulting from electromagnetic properties variation for metal plastic deformation monitoring. Firstly, the influences of electromagnetic parameters (permeability, conductivity) on the radio-frequency reflection features of the metal plate samples were simulated. Energy distribution of radio-frequency varies obviously due to electromagnetic properties variation according to the simulation results. Experiments were conducted to verify simulation results. The results of the experiments indicate that the reflected radio-frequency signal strength decreases with progressive plastic deformation in metal, which has been in conformity with simulations.

Key words: plastic deformation, metal, nondestructive testing, radiofrequency

摘要： 提出了一种根据电磁特性变化对金属塑性变形进行监测的研究方法。首先，针对金属试样的电磁参数（磁导率、电导率）变化对射频反射特性的影响进行仿真，仿真结果表明，电磁特性与射频能量分布有着明显的相关性。然后，通过试验对仿真结果进行验证，试验结果表明，随着塑性变形程度的加剧，反射的射频信号强度将会逐渐减小，与仿真结果相符。

关键词: 塑性变形, 金属, 无损检测, 射频

CLC Number:

TH17

YIN Aijun, YAO Wenquan, REN Hongji, DAI Zongxian. Evaluation of Metal Plastic Deformation Using Radio-frequency Reflection Features[J]. China Mechanical Engineering.

尹爱军, 姚文权, 任宏基, 戴宗贤. 基于射频信号反射特性的金属塑性变形评估[J]. 中国机械工程.

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