| 金属磁记忆技术检测低碳钢静载拉伸破坏的实验研究 |
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| 引用本文： | 董丽虹,徐滨士,董世运,尹大伟.金属磁记忆技术检测低碳钢静载拉伸破坏的实验研究[J].材料工程,2006(3):40-43. |
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| 作者姓名： | 董丽虹 徐滨士 董世运 尹大伟 |
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| 作者单位： | 1. 装甲兵工程学院,武器装备再制造技术国家重点试验室,北京,100072;军械工程学院,基础部,石家庄,050003
2. 装甲兵工程学院,武器装备再制造技术国家重点试验室,北京,100072 |
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| 基金项目： | 中国科学院资助项目
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国家预研基金 |
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| 摘 要： | 为探索磁记忆现象的物理机制,在地磁场环境中,静载拉伸低碳钢板状试件.对应试件加载前、静载拉伸过程中不同的载荷水平以及断裂后等不同阶段,分别采用EMS-2003磁记忆诊断仪检测试样表面磁场强度垂直分量信号的变化.结果发现,加载前各试件初始磁状态对试件断裂后信号有影响.试件拉伸过程中塑性变形阶段内磁信号无较大数值变化,断裂后信号突变.拉伸过程中过零点漂移,最后集中在断口处.过零点对判定损伤破坏的铁磁构件危险区域具有一定意义.
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| 关 键 词： | 磁记忆 静载拉伸 磁信号 过零点 金属磁记忆 技术检测 低碳钢 静载 拉伸破坏 实验 研究 Test Condition Tension Static Low Carbon Steel Signals Magnetic Memory Metal 意义 危险区域 铁磁构件 损伤破坏 过零点 断口 |
| 文章编号： | 1001-4381(2006)03-0040-04 |
| 收稿时间： | 2005-03-28 |
| 修稿时间： | 2005-07-15 |
Study on Metal Magnetic Memory Signals of Low Carbon Steel Under Static Tension Test Condition |
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| DONG Li-hong,XU Bin-shi,DONG Shi-yun,YIN Da-wei.Study on Metal Magnetic Memory Signals of Low Carbon Steel Under Static Tension Test Condition[J].Journal of Materials Engineering,2006(3):40-43. |
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| Authors: | DONG Li-hong XU Bin-shi DONG Shi-yun YIN Da-wei |
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| Affiliation: | 1 National Key Laboratory for Remanufacturing of Armored Force Engineering Institute, Beijng 100072,China;2 Ordnance Engineering College, Shijiazhuang 050003, China |
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| Abstract: | Low carbon steel samples were tested under static tension conditions in quest of physical mechanism in geomagnetic field. Normal component of surface magnetic field intensity signals were measure by EMS-2003 metal magnetic memory instrument in the whole tensile process. The results showed that the initial magnetic signals of specimens influenced the signals after fracture. The magnetic signals were hardly varied during elastic and plastic deformation periods but changed after fracture rapidly. Zero-crossing points of magnetic signals lay in the fracture position. It is helpful some meaning on inspecting the dangerous zones of ferromagnetic materials. |
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| Keywords: | magnetic memory static tension magnetic signal zero-crossing point |
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