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范文（规范细则） 著作权转让协议 
周恺,张睿哲,叶宽,李鸿达,王哲,黄松岭.基于正交试验理论的接地扁钢缺陷检测电磁超声换能器优化设计[J].电测与仪表,2023,60(8):57-61.
Zhou Kai,Zhang Ruizhe,Ye Kuan,Li Hongda,Wang Zhe,Huang Songling.Optimal design of electromagnetic ultrasonic transducer for defect detection of grounded flat steel based on orthogonal test theory[J].Electrical Measurement & Instrumentation,2023,60(8):57-61.基于正交试验理论的接地扁钢缺陷检测电磁超声换能器优化设计 Optimal design of electromagnetic ultrasonic transducer for defect detection of grounded flat steel based on orthogonal test theory DOI：10.19753/j.issn1001-1390.2023.08.010 中文关键词: 接地扁钢 电磁超声换能器 导波 缺陷检测 正交试验理论 优化 英文关键词:grounded flat steel, electromagnetic ultrasonic transducer, guided wave, defect detection, orthogonal test theory, optimization 基金项目:国网北京市电力公司科技项目（52022319005k）；国家自然科学基金资助项目（52077110） 摘要点击次数: 1125 中文摘要: 接地网是保障电力系统运行的重要设施,需要及时地开展接地扁钢的缺陷检测。然而,目前的检测方法在准确性、效率等方面依然存在不足。电磁超声导波检测方法可以在不开挖的条件下,利用非接触的优势实现地网的检测,具有一定的优势。本文针对接地扁钢,设计简易有效的电磁超声SH导波换能器,并分析换能过程中的多物理场耦合机理,在COMSOL Multiphysics中开展有限元建模和仿真。为了优化换能器,根据正交试验理论,进行多因素多水平分析,获得5个参数对导波激励的影响规律以及最优参数组合。进一步,搭建扁钢检测系统,开展SH导波实验,结果表明：相比于正交试验表中的效果最好的前两个参数组合,最优参数组合的换能器性能在导波幅度上分别提升了14.0%和28.6%。 英文摘要: The grounding grid is an important facility to ensure the operation of the power system. It is necessary to carry out the defect detection of the grounded flat steel in time. However, the current detection methods still have shortcomings in terms of accuracy and efficiency. The electromagnetic ultrasonic guided wave detection method can use the advantages of non-contact to realize the detection of ground nets without excavation, which has certain advantages. In this paper, a simple and effective electromagnetic ultrasonic SH guided wave transducer is designed for grounded flat steel. The mechanism of multi-physics coupling in the energy conversion process is analyzed. Finite element modeling and simulation are carried out in COMSOL Multiphysics. In order to optimize the transducer, the multi-factor and multi-level analysis are carried out according to the orthogonal test theory, and the influence of 5 parameters on guided wave excitation and the optimal parameter combination are obtained. Furthermore, a flat steel detection system is established and SH guided wave experiments are carried out. The results show that: compared with the first two parameter combinations in the orthogonal test table, the transducer performance of the optimal parameter combination increases by 14.0% and 28.6% in the amplitude of guided wave, respectively. 查看全文 查看/发表评论 下载PDF阅读器 关闭