| 基于磁滞无损技术的起重机钢梁疲劳寿命分析 |
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| 引用本文： | 章俊,宗燕兵,陈成,李玲珍,苍大强.基于磁滞无损技术的起重机钢梁疲劳寿命分析[J].物理测试,2006,24(4):24-28. |
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| 作者姓名： | 章俊 宗燕兵 陈成 李玲珍 苍大强 |
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| 作者单位： | 1.广东省特种设备检测研究院起重机械与车辆检验室，广东 广州 510000；;
2. 广东工业大学材料与能源学院，广东 广州 510006 |
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| 摘 要： | 针对起重机的钢梁结构的疲劳问题，选取起重机所用钢材制得3组试样进行测试，每组试样的中间标距部分标记了3个位置，随后对试样进行拉伸试验，拉伸前后分别进行矫顽力测试，对拉伸试验过程进行仿真工作，将得到的仿真应力云图与矫顽力云图进行了对比。测试及仿真结果表明：随着外加拉应力的增大，材料的矫顽力(Hc)逐渐增大，矫顽力呈现阶段性的变化规律，这可能与残余应力在材料内部产生位错的钉扎效应有关，矫顽力云图表明试样内部的晶体结构受到不同程度的破坏，矫顽力也随之增加。进一步对矫顽力与应变数据进行理论分析，得到矫顽力 应变拟合曲线与拟合方程。
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| 关 键 词： | 矫顽力 磁滞无损技术 应力分析 疲劳寿命 |
| 文章编号： | 1001-0777(2006)04-0024-03 |
| 修稿时间： | 2005-11-03 |
Effect of Electric Pulse on Crystallization in KCI Solution |
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| ZHANG Jun, ZONG Yan-bing, CHEN Cheng, LI Ling-zhen, CANG Da-qiang.Effect of Electric Pulse on Crystallization in KCI Solution[J].Physics Examination and Testing,2006,24(4):24-28. |
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| Authors: | ZHANG Jun ZONG Yan-bing CHEN Cheng LI Ling-zhen CANG Da-qiang |
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| Affiliation: | 1. Guangdong Special Equipment Testing and Research Institute for Lifting Machinery and ;
Vehicle Inspection, Guangzhou 510000, China;2. School of Materials and Energy, ;
Guangdong University of Technology, Guangzhou 510006, China |
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| Abstract: | The research on crystallization in the solution under the physical fields has become a hotspot issue.This paper focuses on the change of the crystallization time in the KCl solution by applying the electric pulse before crystallization.Applying electric pulse in the crystallization process is also studied as to find the change of the crystallization time and the crystallization rate.The conclusion that the electric pulse significantly decreases the crystallization time has been discussed.What's more,with the peak current and the frequency of the electric pulse increasing,the crystallization time is reduced obviously.When the electric pulse is applied during the crystallization process,the time of the crystallization is also cut down,and the bigger the peak current is,the shorter the crystallization time is. |
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| Keywords: | electric pulse KC1 solution crystallization |
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