| 拉应力引起的磁记忆特性及其与检测时间的关系 |
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| 引用本文： | 于风云.拉应力引起的磁记忆特性及其与检测时间的关系[J].黑龙江科技学院学报,2007,17(2):126-128. |
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| 作者姓名： | 于风云 |
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| 作者单位： | 黑龙江科技学院,机械工程学院,哈尔滨,150027 |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目
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黑龙江省高等学校骨干教师资助计划 |
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| 摘 要： | 在工作载荷和地磁场的作用下,针对铁磁性构件存在残余磁感应和自磁化增长的现象.进行了引起磁记忆特性及其与检测时间关系的研究.通过对45#钢在单轴拉伸过程中残余磁感应强度的检测与分析,得出了拉应力引起的残余磁感应强度的变化规律;在塑性阶段,将不同时间段内测得的残余磁感应强度数值进行比较,分析了塑性变形试样放置时间长短对磁记忆现象产生的影响.分析表明:受力构件能够记忆前段承受最大载荷时的磁信号,且检测时间的不同不影响检测结果.
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| 关 键 词： | 磁记忆 磁感应强度 塑性变形 检测时间 拉应力 记忆特性 检测时间 关系 time testing tensile stress induced characteristics magnetic memory 结果 磁信号 最大载荷 受力构件 分析表 影响 磁记忆 试样放置时间 塑性变形 比较 |
| 文章编号： | 1671-0118（2007）02-0126-03 |
| 修稿时间： | 2007-01-19 |
Connection between magnetic memory characteristics induced by tensile stress and its testing time |
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| YU Fengyun.Connection between magnetic memory characteristics induced by tensile stress and its testing time[J].Journal of Heilongjiang Institute of Science and Technology,2007,17(2):126-128. |
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| Authors: | YU Fengyun |
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| Institution: | College of Mechanical Engineering, Heilongjiang Institute of Science and Technology, Harbin 150027, China |
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| Abstract: | Residual magnetic induction and the increase of self-magnetization occur in ferromagnetism structures due to the influence of working load and geomagnetic field. This is called metal magnetic memory phenomenon. The change law of the residual magnetic intensities by tensile stress is obtained through testing the residual magnetic intensities in the odd-axis tensile test of 45# carbon steel and analyzing the results. In plastic phase, the effect of the test interval of plastic distortion sample to the magnetic memory characteristics is analyzed by comparing the residual magnetic intensities tested at different time. |
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| Keywords: | magnetic memory magnetic indution plastic deformation test time |
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