Development of a Meander-Coil-Type Dual Magnetic Group Circumferential Magnetostrictive Guided Wave Transducer for Detecting Small Defects Hidden behind Support Structures.

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL

Micromachines Pub Date : 2024-10-15 DOI:10.3390/mi15101261

Jinjie Zhou, Hang Zhang, Yuepeng Chen, Jitang Zhang

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引用次数: 0

Abstract

In order to solve the problem that small defects hidden behind pipeline support parts are difficult to detect effectively in small spaces, such as offshore oil platforms, a meander-coil-type dual magnetic group circumferential magnetostrictive guided wave transducer is developed in this paper. The transducer, which consists of a coil, two sets of permanent magnets, and a magnetostrictive patch, can excite a high-frequency circumferential shear horizontal (CSH) guided wave. The energy conversion efficiency of the MPT is optimized through magnetic field simulation and experiment, and the amplitude of the defect signal is enhanced 1.9 times. The experimental results show that the MPT developed in this paper can effectively excite and receive CSH₂ mode guided waves with a center frequency of 1.6 MHz. Compared with the traditional PPM EMAT transducer, the excitation energy of the transducer is significantly enhanced, and the defects of the 2 mm round hole at the back of the support can be effectively detected.

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开发用于检测隐藏在支撑结构后面的小缺陷的蜿蜒线圈型双磁组环向磁致伸缩导波传感器

为了解决在海上石油平台等狭小空间内难以有效检测隐藏在管道支撑部件后面的微小缺陷的问题，本文开发了一种蜿蜒线圈型双磁组圆周磁致伸缩导波传感器。该传感器由一个线圈、两组永久磁铁和一个磁致伸缩贴片组成，可激发高频圆周水平剪切（CSH）导波。通过磁场模拟和实验优化了 MPT 的能量转换效率，缺陷信号的振幅提高了 1.9 倍。实验结果表明，本文开发的 MPT 能有效激发和接收中心频率为 1.6 MHz 的 CSH2 模式导波。与传统的 PPM EMAT 换能器相比，该换能器的激励能量明显增强，可以有效地检测到支架背面 2 毫米圆孔的缺陷。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION

CiteScore

5.20

自引率

14.70%

发文量

1862

审稿时长

16.31 days

期刊介绍： Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.