| 电磁声发射技术在无损检测中的应用 |
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| 引用本文： | 刘素贞,杨庆新,金亮,张闯.电磁声发射技术在无损检测中的应用[J].电工技术学报,2009,24(1). |
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| 作者姓名： | 刘素贞 杨庆新 金亮 张闯 |
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| 作者单位： | 河北工业大学电磁场与电器可靠性省部共建重点实验室,天津,300130 |
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| 摘 要： | 电磁声发射技术是通过对导电部件进行电磁加载产生洛仑兹力,进而激发声发射效应,并通过此效应来进行无损检测.它可以定位薄金属板中微小的缺陷或裂缝,而且不需要完全加载,集合了电磁无损检测技术和声发射无损检测技术的优点.建立了电磁声发射的有限元模型,分析了试件在不同加载条件下的形变,对比了几个加载因素对电磁声发射的影响,并对试件进行了温升分析.在数值分析的基础上进行了电磁声发射实验,得到了电磁声发射信号,并对缺陷进行定位.
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| 关 键 词： | 电磁声发射 洛仑兹力 有限元模型 无损检测 |
Application of Electromagnetic Acoustic Emission Technology in Non-Destructive Testing |
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| Liu Suzhen,Yang Qingxin,Jin Liang,Zhang Chuang.Application of Electromagnetic Acoustic Emission Technology in Non-Destructive Testing[J].Transactions of China Electrotechnical Society,2009,24(1). |
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| Authors: | Liu Suzhen Yang Qingxin Jin Liang Zhang Chuang |
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| Affiliation: | Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China |
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| Abstract: | Electromagnetic acoustic emission technology does nondestructive detection with the effect of dynamic electromagnetic loading to generate a stress field stimulating stress waves from the defects. It can locate small flaws or cracks in thin-walled structures nondestructively to allow inspection of specific areas without loading the whole structure, so it combines advantages of electromagnetic non-destructive testing and acoustic emission non-destructive testing. The paper gives the finite element model of el... |
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| Keywords: | Electromagnetic acoustic emission Lorentz forces finite element model non-destructive testing |
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