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薄型可移除磁致伸缩贴片导波方向性图的实验研究

Experimental Study of the Guided Wave Directivity Patterns of Thin Removable Magnetostrictive Patches.

作者信息

Zitoun Akram, Dixon Steven, Edwards Graham, Hutchins David

机构信息

Brunel Composites Centre, College of Engineering, Design and Physical Sciences, Brunel University London, London UB8 3PH, UK.

Monitoring and Inspection Research, TWI Ltd., Granta Park, Cambridge CB21 6AL, UK.

出版信息

Sensors (Basel). 2020 Dec 15;20(24):7189. doi: 10.3390/s20247189.

DOI:10.3390/s20247189
PMID:33333926
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7765406/
Abstract

The characteristics of removable magnetostrictive thin patches are investigated for the generation of guided waves in plates. The directivity patterns of SH, S0 and A0 modes have been measured in a thin metallic plate for different combinations of static and dynamic magnetic field directions. This used different coil geometries such as racetrack and spiral coils to generate the dynamic magnetic field, as well as separate biasing static magnetic fields from permanent magnets. This arrangement generated signals via both Lorentz and magnetostrictive forces, and the resultant emitted guided waves were studied for different dynamic and static magnetic field directions and magnitudes. It is demonstrated that different guided wave modes can be produced by controlling these parameters.

摘要

研究了用于在板中产生导波的可移除磁致伸缩薄贴片的特性。在薄金属板中，针对静态和动态磁场方向的不同组合，测量了SH、S0和A0模式的方向性图。这使用了不同的线圈几何形状，如跑道形和螺旋形线圈来产生动态磁场，以及来自永磁体的单独偏置静态磁场。这种布置通过洛伦兹力和磁致伸缩力产生信号，并针对不同的动态和静态磁场方向及大小研究了产生的导波。结果表明，通过控制这些参数可以产生不同的导波模式。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/cdb1a4190079/sensors-20-07189-g016.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/d0c0fd6a3daf/sensors-20-07189-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/221f47312824/sensors-20-07189-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/e2a569575734/sensors-20-07189-g006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/fc3131e9d0fa/sensors-20-07189-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/389814068a96/sensors-20-07189-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/7e4f9afb636d/sensors-20-07189-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/504da3616a5d/sensors-20-07189-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/d8ec52eb415a/sensors-20-07189-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/96d5bb3a40a9/sensors-20-07189-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/ca6d48b446fc/sensors-20-07189-g014a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/6e108f5da637/sensors-20-07189-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/cdb1a4190079/sensors-20-07189-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/8c2c7913801d/sensors-20-07189-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/82d8f85deca6/sensors-20-07189-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/cd13d861c979/sensors-20-07189-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/d0c0fd6a3daf/sensors-20-07189-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/221f47312824/sensors-20-07189-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/e2a569575734/sensors-20-07189-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/37eeacd46078/sensors-20-07189-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/fc3131e9d0fa/sensors-20-07189-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/389814068a96/sensors-20-07189-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/7e4f9afb636d/sensors-20-07189-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/504da3616a5d/sensors-20-07189-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/d8ec52eb415a/sensors-20-07189-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/96d5bb3a40a9/sensors-20-07189-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/ca6d48b446fc/sensors-20-07189-g014a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/6e108f5da637/sensors-20-07189-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2248/7765406/cdb1a4190079/sensors-20-07189-g016.jpg

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