| 静载作用下典型结构钢磁记忆信号的变化规律 |
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| 引用本文： | 崔常京,刘桂良,董世运,陈群志,董丽虹.静载作用下典型结构钢磁记忆信号的变化规律[J].实验室研究与探索,2007(11). |
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| 作者姓名： | 崔常京 刘桂良 董世运 陈群志 董丽虹 |
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| 作者单位： | 北京航空工程技术研究中心 北京100076(崔常京，陈群志)，中国核动力研究设计院 成都610041(刘桂良)，装甲兵工程学院装备再制造技术国防科技重点实验室 北京100072(董世运，董丽虹) |
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| 基金项目： | 国家自然科学基金重点项目(50235030)，总装备部“十五”维修预研项目(41327030202) |
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| 摘 要： | 采用拉伸试验的方法研究了45CrNiMoVA结构钢在静载作用下的磁记忆效应,通过测量试样表面在加载前、静载拉伸过程中不同载荷以及断裂后的磁记忆信号,获得了45CrNiMoVA结构钢表面磁记忆信号随应力变化的关系,发现磁记忆信号存在零点值偏移现象,而零点值的位置与试样破坏部位存在一定的对应关系,可以定性的判定45CrNiMoVA结构钢构件的危险区域。
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| 关 键 词： | 45CrNiMoVA结构钢 拉伸试验 磁记忆信号 零点值 断裂 |
The Magnetic Memory Signal Variation Law of the Typical Structural Steel Under Static-Load |
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| CUI Chang-jing,LIU Gui-liang,DONG Shi-yun,CHEN Qun-zhi,DONG Li-hong.The Magnetic Memory Signal Variation Law of the Typical Structural Steel Under Static-Load[J].Laboratory Research and Exploration,2007(11). |
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| Authors: | CUI Chang-jing LIU Gui-liang DONG Shi-yun CHEN Qun-zhi DONG Li-hong |
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| Institution: | CUI Chang-jing~1,LIU Gui-liang~2,DONG Shi-yun~3,CHEN Qun-zhi~1,DONG Li-hong~3 |
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| Abstract: | The magnetic memory effect of 45CrNiMoVA structural steel under static-load were studied.The surface magnetic field intensity signals were measure by EMS-2003 instrument in the whole tensile process and gaining the relationship of the magnetic memory signal with variation of stresses.The zone of surface magnetic signals exist excursion,and the position of zero value and fracture of specimens has some relationship.The zero value is helpful on deciding the dangerous zone of 45CrNiMoVA tructural steel component. |
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| Keywords: | 45CrNiMoVA structural steel tensile test magnetic memory signal fracture |
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