| 基于 U 型探头的 ACFM 和AC-MFL 法的机理辨析 |
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| 引用本文： | 宋凯,康宜华,孙燕华,巴鲁军. 基于 U 型探头的 ACFM 和AC-MFL 法的机理辨析[J]. 测试技术学报, 2010, 24(1): 67-72. DOI: 10.3969/j.issn.1671-7449.2010.01.013 |
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| 作者姓名： | 宋凯 康宜华 孙燕华 巴鲁军 |
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| 作者单位： | 华中科技大学,数字制造装备与技术国家重点实验室,湖北,武汉,430074;南昌航空大学,测试与光电工程学院,江西,南昌,330063;华中科技大学,数字制造装备与技术国家重点实验室,湖北,武汉,430074;中石化胜利油田公司渤海管具公司,山东,东营,257000 |
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| 基金项目： | 国家自然科学基金资助项目(50675083);;江西省自然科学基金资助项目(2009GQC0106);;航空科学基金资助项目(20080956007) |
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| 摘 要： | 交变磁场测量技术(ACFM)和交流漏磁检测技术(AC-MFL)在工程实践中有较多应用,都采用了U型磁轭式探头,两种检测方法在探头和信号处理上有诸多相同点,但检测机理有较大差异,造成在研究和应用上的混淆.针对此问题,基于有限元仿真的方法,分析了两种方法在信号检测特征的差异,提出了一种可有效区分的方法,为剖析其检测原理提供理论依据.采用AC-MFL法的检测参数,对U型磁轭式探头进行了仿真,利用上述方法进行评定,结果表明:该探头的检测结果表现为ACFM法的信号特征,而非AC-MFL法.
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| 关 键 词： | 交变磁场测量技术 交流漏磁检测技术 检测机理 有限元分析 |
Signal Mechanism of ACFM and AC-MFL Method Based on U-Shape Inducer |
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| SONG Kai,KANG Yihua,SUN Yanhua,BA Lujun. Signal Mechanism of ACFM and AC-MFL Method Based on U-Shape Inducer[J]. Journal of Test and Measurement Techol, 2010, 24(1): 67-72. DOI: 10.3969/j.issn.1671-7449.2010.01.013 |
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| Authors: | SONG Kai KANG Yihua SUN Yanhua BA Lujun |
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| Affiliation: | 1.State Key Laboratory of Digital Manufacturing Equipment & Technology;Huazhong University of Science and Technology;Wuhan 430074;China;2.School of Measuring and Optical Engineering;Nanchang Hangkong University;Nanchang 330063;3.Bohai Pipe Tool Thread Branch Office;Shengli Oil Field Branch Office;China Petrolem Chemical Corporation;Dongying 257000;China |
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| Abstract: | Alternative current field measurement(ACFM) and alternative current magnetic flux leakage(AC-MFL) technique using U-shape inducers have been applied widely to non-destructive testing practices.Two detection methods share many features on the probe and signal processing,but there is great difference on the detection mechanism.For this confusing problem,the differences on signal characteristics of two methods were analyzed based on the finite element simulation in this paper.An effective distinguishing method... |
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