| Q235钢静载拉伸磁记忆检测试验 |
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| 引用本文： | 叶宇峰,钟丰平,曹世仑,项 智.Q235钢静载拉伸磁记忆检测试验[J].华南农业大学学报(社会科学版),2015,33(3). |
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| 作者姓名： | 叶宇峰 钟丰平 曹世仑 项 智 |
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| 作者单位： | 1．浙江省特种设备检验研究院，浙江杭州310020：2．浙江工业大学机械工程学院，浙江杭州310014 |
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| 摘 要： | 为了研究磁记忆信号和应力之间的关系，采用磁记忆方法检测单向静载拉伸后Q235钢板表面磁场强度法向分
量Hp(y)，并设计了更方便检测的拉伸试样。结果表明Q235试件断裂前磁场法向分量检测曲线为斜直线，具有唯一的
极性翻转点。同时还发现Q235材料处在弹性阶段时磁参数m值变化较慢，在塑性变形阶段时磁参数m值变化较快。
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| 关 键 词： | 磁记忆检测 磁参数变化规律 磁场法向分量 Q235钢 |
Experiment on Magnetic Memory Testing of Static-Tension Q235 Steel Samples |
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| YE Yufengl,ZHONG Fengpingl,CAO Shilun,XIANG Zhjl.Experiment on Magnetic Memory Testing of Static-Tension Q235 Steel Samples[J].Journal of South China Agricultural University:Social Science Edition,2015,33(3). |
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| Authors: | YE Yufengl ZHONG Fengpingl CAO Shilun XIANG Zhjl |
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| Institution: | l. Zhejiang Provincial Special Equipment Inspection and Research Institute , Hangzhou 3 10020 , China ;2. College of Mechanical Engineering , Zhejiang University of Technology , Hangzhou 310014 . China |
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| Abstract: | ln order to study the relationship between magnetic memory signal and stress. magnetic memory testing
( MMT) technology was employed to detect normal component Hp (y) of scattering magnetic field intensity of Q235 steel
samples after unidirectional static tension tests.and designed the new tensile samples for the detecting. Results show that
the normal component testing curves are diagonal line has a unique polarity before Q235 steel sample failure. Results also
show that magnetic parameter m change faster in plastic deformation stage than in elastic stage. |
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| Keywords: | magnetic memory testing magnetic parameter normal component of magnetic field Q235 steel |
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