太赫兹无损评估多层涂料堆的腐蚀情况

IF 0.5 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Evaluation Pub Date : 2024-05-01 DOI:10.32548/2024.me-04360

Jessy Nemati, Alexander Clark, Ian Gatley, John Federici, Alan Fletcher

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引用次数: 0

摘要

本文展示了埋藏在多层涂料堆下的腐蚀的太赫兹无损检测。在加速腐蚀过程中，定期从环境箱中取出样品，并使用太赫兹脉冲成像技术对其进行表征。对反射波形的分析表明，腐蚀会导致从金属层反射出来的去卷积脉冲振幅减小。振幅降低的原因是金属表面随着腐蚀而变得粗糙。表面粗糙度随腐蚀而增加，最终导致多层涂料堆栈从基体上脱离。

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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Terahertz Nondestructive Evaluation of Corroding Multilayer Paint Stacks

This paper showcases terahertz nondestructive detection of corrosion buried underneath a multilayer paint stack. Periodically, during the accelerated corrosion protocol, samples are removed from the environmental chambers and characterized using terahertz pulse imaging. Analysis of the reflected waveforms indicates that corrosion leads to a decrease in the amplitude of the deconvoluted pulse, which reflects from the metallic layer. The decrease in amplitude results from a roughening of the metallic surface with corrosion. Surface roughness increases with corrosion, eventually leading to detachment of the multilayer paint stack from the substrate.

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来源期刊

Materials Evaluation 工程技术-材料科学：表征与测试

CiteScore

0.90

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Materials Evaluation publishes articles, news and features intended to increase the NDT practitioner’s knowledge of the science and technology involved in the field, bringing informative articles to the NDT public while highlighting the ongoing efforts of ASNT to fulfill its mission. M.E. is a peer-reviewed journal, relying on technicians and researchers to help grow and educate its members by providing relevant, cutting-edge and exclusive content containing technical details and discussions. The only periodical of its kind, M.E. is circulated to members and nonmember paid subscribers. The magazine is truly international in scope, with readers in over 90 nations. The journal’s history and archive reaches back to the earliest formative days of the Society.