Optimized microwave excitation probe for general application in NDT of wall thinning in metal pipes of arbitrary diameter
Optimized microwave excitation probe for general application in NDT of wall thinning in metal pipes of arbitrary diameter
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DOI：
10.1016/j.ndteint.2014.12.004
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发表时间：
2015-03-01
影响因子：
4.2
通讯作者：
Hashizume, Hidetoshi
中科院分区：
文献类型：
--
作者：
Sasaki, Kota;Liu, Linsheng;Hashizume, Hidetoshi
研究了通过优化微波激励探头来开发任意直径管道内缺陷的微波无损检测的一般方法。提出了一种基于传输特性的参数优化方案得到的微波探头。对五个微波探头的三维有限元模拟表明，与常规探头相比，较大的优化参数可以减少微波反射，并改善管道内的单模传播。用不同直径的直铜管进行的实验验证证实，与常规探头相比，优化后的微波探头对内部缺陷具有更高的信噪比，从而验证了新的优化参数。(C)2014爱思唯尔有限公司。保留所有权利。
Generalized approaches to developing a microwave NDT for flaws inside an arbitrary diameter pipe through optimizing a microwave-exciting probe were investigated. A microwave probe obtained from a parameter-optimizing scheme based on transmission characteristics is proposed. Three-dimensional finite element simulation of five microwave probes indicates that a larger optimization parameter enables reduced microwave reflection, as well as improved single-mode propagation inside the pipe as compared with conventional probes. Experimental verification, using straight brass pipes of various diameters confirmed that the optimized microwave probe exhibits a larger signal-to-noise ratio for internal flaws when compared with conventional probes, thereby validating the new optimization parameter. (C) 2014 Elsevier Ltd. All rights reserved.