基于线扫描谱域光学相干层析的复合材料微损伤修复过程监测

doi:10.19936/j.cnki.2096-8000.20220528.032

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (12): 31-36.DOI: 10.19936/j.cnki.2096-8000.20220528.032

基于线扫描谱域光学相干层析的复合材料微损伤修复过程监测

游汝风, 黄频波, 倪梓浩, 谢胜利, 白玉磊, 董博^*

广东工业大学自动化学院,广州510006

收稿日期:2021-12-15 发布日期:2023-02-03
通讯作者: 董博(1989-),男,博士,副教授,主要从事精密测量方面的研究,b.dong@gdut.edu.cn。
作者简介:游汝风(1997-),男,硕士研究生,主要从事基于谱域OCT的复合材料检测方面的研究。
基金资助:
国家自然科学基金(62171140,11802008,61727810,61705047);广东省自然科学基金(2021A1515012598,2021A1515011945)

Monitoring the micro-damage repair process inside composite using line-field spectral-domain optical coherence tomography

YOU Ru-feng, HUANG Pin-bo, NI Zi-hao, XIE Sheng-li, BAI Yu-lei, DONG Bo^*

School of Automation, Guangdong University of Technology, Guangzhou 510006, China

Received:2021-12-15 Published:2023-02-03

摘要/Abstract

摘要： 早期微损伤检测与修复监测对复合材料的服役安全有着重要意义,故本文提出了一种基于线扫描谱域光学相干层析(LF-SD-OCT)的复合材料损伤修复过程可视化监测方法。该方法利用层析微米级分辨率,可以对材料内部截面进行高精度成像和损伤检测,结合图像处理技术能够实现复合材料内部损伤修复过程的可视化监测。为验证该方法的有效性,设计与搭建了一套倒置式LF-SD-OCT系统,通过标定实验确定了系统深度分辨率为5.20 μm、深度量程为3.36 mm、横向分辨率为6.02 μm以及视场宽度为5.80 mm;并对半透明硅胶材料、光固化树脂材料和透明乙烯－醋酸乙烯共聚物(EVA)材料等内部微损伤进行了层析成像,最后利用LF-SD-OCT动态监测了EVA材料内部损伤的电热修复完整过程。结果表明该方法具有优越的分辨率和动态测量能力,可为监测复合材料修复等领域提供新的思路。

关键词: 复合材料, 损伤修复, 可视化监测, 光学相干层析成像

Abstract: Detecting early micro-damage and monitoring repair process are of great significance to the safety of composite materials in service, a method based on line-field spectral-domain optical coherence tomography (LF-SD-OCT) is proposed to study the problem above in this paper, which can provide a micron scale section-image for composite material to inspect damage, and monitor damage repair process combined with image processing techniques. For verification, an inverted type LF-SD-OCT system is designed and established, which features the depth resolution of 5.20 μm, the depth range of 3.36 mm, the lateral resolution of 6.02 μm, and the viewfield width of 5.80 mm. Then, the internal micro-damage tomography of translucent silica gel, light-cured resin, and transparent ethylene-vinyl acetate copolymer (EVA) is carried out. Finally, based on the established system, the whole electron-thermal repair process of internal damage inside EVA is monitored in time. The results show that the method owns the excellent qualities of micron resolution and dynamic measurement, which is very suitable for damage inspection and repair sensing of composite materials.

Key words: composite material, damage repair, visual monitoring, optical coherence tomography

中图分类号:

TB332

游汝风, 黄频波, 倪梓浩, 谢胜利, 白玉磊, 董博. 基于线扫描谱域光学相干层析的复合材料微损伤修复过程监测[J]. 复合材料科学与工程, 2022, 0(12): 31-36.

YOU Ru-feng, HUANG Pin-bo, NI Zi-hao, XIE Sheng-li, BAI Yu-lei, DONG Bo. Monitoring the micro-damage repair process inside composite using line-field spectral-domain optical coherence tomography[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(12): 31-36.

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基于线扫描谱域光学相干层析的复合材料微损伤修复过程监测

Monitoring the micro-damage repair process inside composite using line-field spectral-domain optical coherence tomography

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