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通过测定表观热扩散率对涂层厚度进行主动红外热成像评估。

Active IR Thermography Evaluation of Coating Thickness by Determining Apparent Thermal Effusivity.

作者信息

Moskovchenko Alexey, Vavilov Vladimir, Švantner Michal, Muzika Lukáš, Houdková Šárka

机构信息

New Technologies-Research Centre, University of West Bohemia, Univerzitní 8, 301 00 Plzeň, Czech Republic.

School of Nondestructive Testing, Tomsk Polytechnic University, 30, Lenin Avenue, 634050 Tomsk, Russia.

出版信息

Materials (Basel). 2020 Sep 12;13(18):4057. doi: 10.3390/ma13184057.

DOI:10.3390/ma13184057
PMID:32932709
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7560337/
Abstract

Pulsed thermography is a common technique for nondestructive testing (NDT) of materials. This study presents the apparent effusivity method for the quantitative evaluation of coating thickness in a one-sided thermal NDT procedure. The proposed algorithm is based on determining a threshold value of apparent effusivity, which can be found for particular coating-on-substrate structures. It has been found that the square root of the time at which the apparent effusivity curve reaches this threshold is proportional to the coating thickness. The efficiency of the proposed approach is demonstrated by analytical modeling and experimentation performed on thermally-sprayed coatings.

摘要

脉冲热成像技术是材料无损检测（NDT）的常用技术。本研究提出了一种表观热扩散率法，用于单面热无损检测过程中涂层厚度的定量评估。所提出的算法基于确定表观热扩散率的阈值，该阈值可针对特定的涂层-基体结构找到。已经发现，表观热扩散率曲线达到该阈值时的时间平方根与涂层厚度成正比。通过对热喷涂涂层进行分析建模和实验，证明了所提出方法的有效性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/3923f4478d20/materials-13-04057-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/638029f1d5a4/materials-13-04057-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/dd4bca4635cd/materials-13-04057-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/da030259f9c8/materials-13-04057-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/cd67240efa88/materials-13-04057-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/a30eaf8af737/materials-13-04057-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/e5cd2d987df1/materials-13-04057-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/f320c1fe47e3/materials-13-04057-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/67367c970122/materials-13-04057-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/b47c96ea326f/materials-13-04057-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/3923f4478d20/materials-13-04057-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/638029f1d5a4/materials-13-04057-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/dd4bca4635cd/materials-13-04057-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/da030259f9c8/materials-13-04057-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/cd67240efa88/materials-13-04057-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/a30eaf8af737/materials-13-04057-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/e5cd2d987df1/materials-13-04057-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/f320c1fe47e3/materials-13-04057-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/67367c970122/materials-13-04057-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/b47c96ea326f/materials-13-04057-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/36cc/7560337/3923f4478d20/materials-13-04057-g010.jpg

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本文引用的文献

1
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Appl Opt. 2020 Jun 10;59(17):E29-E35. doi: 10.1364/AO.388440.
2
Validation of Terahertz coating thickness measurements using X-ray microtomography.采用 X 射线微断层扫描技术对太赫兹涂层厚度测量进行验证。
Mol Pharm. 2012 Dec 3;9(12):3551-9. doi: 10.1021/mp300383y. Epub 2012 Nov 12.
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Non-destructive techniques based on eddy current testing.基于涡流检测的无损检测技术。
使用脉冲红外热成像技术表征低尺寸/深度比和低热反射率的缺陷深度
Materials (Basel). 2021 Apr 10;14(8):1886. doi: 10.3390/ma14081886.
Sensors (Basel). 2011;11(3):2525-65. doi: 10.3390/s110302525. Epub 2011 Feb 28.