| 金属厚壁结构中深裂纹的重构方法研究 |
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| 引用本文： | 张东利.金属厚壁结构中深裂纹的重构方法研究[J].传感技术学报,2017,30(11). |
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| 作者姓名： | 张东利 |
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| 作者单位： | 1. 北方民族大学化学与化学工程学院,宁夏 银川,750021;2. 北方民族大学机电工程学院,宁夏 银川,750021 |
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| 基金项目： | 国家自然科学基金项目，宁夏自然科学基金项目，北方民族大学科研项目，北方民族大学引进人才项目，国家民委化工技术基础重点实验室一般科研项目 |
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| 摘 要： | 为了提高涡流方法检测厚壁结构中深裂纹的检测精度,使用三维涡流程序对涡流信号进行了仿真,通过分析传感器布置方案对检测信号及噪声的影响,提出了基于反面涡流检测信号的深裂纹重构策略,并开发了相应的逆问题反演程序,对重构策略的可行性进行了验证.数值仿真结果表明,所提出的基于反面涡流检测信号的深裂纹重构策略,可有效提高厚壁结构中深裂纹的重构精度,并可用于工程实践.
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| 关 键 词： | 厚壁结构 深裂纹重构 涡流传感器 数值仿真 |
Study on Reconstruction of a Deep Crack in Metal Structures |
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| WU Meixian,ZHANG Dongli.Study on Reconstruction of a Deep Crack in Metal Structures[J].Journal of Transduction Technology,2017,30(11). |
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| Authors: | WU Meixian ZHANG Dongli |
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| Abstract: | To enhance the reconstruction precision of a deep crack in thick structures,influence of the eddy current sensor arrangement on testing signals and noises is studied with a 3D code to get eddy current simulation signals. Based on the comparative analysis of results for the two sensor arrangements,a reconstruction strategy based on sig-nals of an outside crack is proposed and a reconstruction code for the inverse problem is also developed. Its effec-tiveness is confirmed by simulation. Results shown that,reconstruction precision of deep cracks could be enhanced by using the strategy and could be applied to the engineering practice. |
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| Keywords: | thick structure deep crack reconstruction eddy current sensor numerical simulation |
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