碳钢塑性变形对增量磁导率信号的影响

中国机械工程

碳钢塑性变形对增量磁导率信号的影响

李丽娟1，2，3;解社娟1，2;陈洪恩1，2;陈玲莉1，2;何曼如1，2;陈振茂1，2

1.西安交通大学机械结构强度与振动国家重点实验室，西安，710049

2.西安交通大学陕西省无损检测与结构完整性评价工程技术研究中心，西安，710049

3.中国核动力研究设计院核反应堆系统设计技术国家重点实验室，成都，610041

出版日期:2018-07-25 发布日期:2018-07-27
基金资助:
国家重点研发计划资助项目（2017YFF0209703）；
国家自然科学基金资助项目（51407132,51577139）；
中央高校基本科研业务费专项资金资助项目
National Key Research and Development Program（No. 2017YFF0209703）
National Natural Science Foundation of China （No. 51407132,51577139）
Fundamental Research Funds for the Central Universities

Influence of Plastic Deformation on Signals of Magnetic Incremental Permeability for Carbon Steel

LI Lijuan1，2，3;XIE Shejuan1，2;CHEN Hong'en1，2;CHEN Lingli1，2;HE Manru1，2;CHEN Zhenmao1，2

1.State Key Laboratory for Strength and Vibration of Mechanical Structures，Xi'an Jiaotong University，Xi'an，710049
2.Shaanxi Engineering Research Center of Nondestructive Testing and Structural Integrity Evaluation，Xi'an Jiaotong University，Xi'an，710049
3.Science and Technology on Reactor System Design Technology State Key Laboratory，Nuclear Power Institute of China，Chengdu，610041

Online:2018-07-25 Published:2018-07-27
Supported by:
National Key Research and Development Program（No. 2017YFF0209703）
National Natural Science Foundation of China （No. 51407132,51577139）
Fundamental Research Funds for the Central Universities

摘要/Abstract

摘要：

针对核电站结构的塑性变形损伤，为研究低碳钢材料塑性变形对增量磁导率信号的影响机理，将B-H曲线的特征量导入数值计算中，间接分析塑性变形对增量磁导率信号曲线的影响规律，开发了基于退化磁矢位法的增量磁导率数值计算程序，并采用数值模拟方法研究了材料剩磁和矫顽力两个因素分别对增量磁导率信号曲线的影响。结果表明，材料剩磁和矫顽力会影响增量磁导率信号曲线的峰峰距、峰值和过零点等特征参数。研究结果对塑性变形的定量无损评价具有参考意义。

关键词: 增量磁导率, 无损评价, 塑性变形, 剩磁, 矫顽力

Abstract: Concerning the plastic deformation of carbon steel used in nuclear power plants，in order to investigate the influence mechanism of plastic deformation on the signals of magnetic incremental permeability，the characteristic quantities of B-H curve was adopted into the simulation to indirectly analyze the influence mechanism of plastic deformation on signal curves of magnetic incremental permeability.Simulation program was developed based on the reduced magnetic vector potential method，and the influences of residual magnetism and coercivity on magnetic incremental permeability signal curves were investigated by numerical simulation. The results indicate that the residual magnetism and coercivity may affect the peak separation，peak value and zero crossing of magnetic incremental permeability signal curve，which has reference value for the quantitative nondestructive evaluation of plastic deformation.

Key words: magnetic incremental permeability, nondestructive evaluation, plastic deformation, residual magnetism, coercivity

中图分类号:

TG115.28

李丽娟1，2，3;解社娟1，2;陈洪恩1，2;陈玲莉1，2;何曼如1，2;陈振茂1，2. 碳钢塑性变形对增量磁导率信号的影响[J]. 中国机械工程.

LI Lijuan1，2，3;XIE Shejuan1，2;CHEN Hong'en1，2;CHEN Lingli1，2;HE Manru1，2;CHEN Zhenmao1，2. Influence of Plastic Deformation on Signals of Magnetic Incremental Permeability for Carbon Steel[J]. China Mechanical Engineering.

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