Detection of a glass fiber-reinforced polymer with defects by terahertz computed tomography

Qing Yang Steve Wu , Nan Zhang , Vincent Lim , Lei Zhang , Yu Zhong , Benjamin Russell , Lin Ke
{"title":"Detection of a glass fiber-reinforced polymer with defects by terahertz computed tomography","authors":"Qing Yang Steve Wu ,&nbsp;Nan Zhang ,&nbsp;Vincent Lim ,&nbsp;Lei Zhang ,&nbsp;Yu Zhong ,&nbsp;Benjamin Russell ,&nbsp;Lin Ke","doi":"10.1016/j.chphma.2024.07.004","DOIUrl":null,"url":null,"abstract":"<div><div>Terahertz (THz) computed tomography (THz CT) exhibits the potential to provide a wealth of data, surpassing that of THz tomographic imaging in applications such as detecting embedded defects, particularly defect evolution within a glass fiber-reinforced polymer. To realize high-resolution THz CT, a systematic approach guided by wave propagation simulation was employed. First, the front wave of the THz beam was fine-tuned to realize a beam diameter of &lt;2 mm. To mitigate the strong refractive effect and minimize Fresnel reflection loss, a refractive-index-matching material was fabricated and utilized as a rounded enclosure for samples with sharp corners. To further improve the reconstruction resolution, a flat surface enclosure was applied to collect all incident beams at the detector. To realize comparable results to those of full-angle CT, a limited-angle CT approach was implemented, and the frequency range 0.1–3 THz was used in the image reconstruction study. The experimental and simulated images were used to validate the findings, and conductive and non-conductive defects measuring 200 µm were successfully visualized. Additionally, a custom-built user interface enabled us to visualize the field spatial distribution of the THz beam with respect to frequency.</div></div>","PeriodicalId":100236,"journal":{"name":"ChemPhysMater","volume":"3 4","pages":"Pages 470-480"},"PeriodicalIF":0.0000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemPhysMater","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772571524000421","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Terahertz (THz) computed tomography (THz CT) exhibits the potential to provide a wealth of data, surpassing that of THz tomographic imaging in applications such as detecting embedded defects, particularly defect evolution within a glass fiber-reinforced polymer. To realize high-resolution THz CT, a systematic approach guided by wave propagation simulation was employed. First, the front wave of the THz beam was fine-tuned to realize a beam diameter of <2 mm. To mitigate the strong refractive effect and minimize Fresnel reflection loss, a refractive-index-matching material was fabricated and utilized as a rounded enclosure for samples with sharp corners. To further improve the reconstruction resolution, a flat surface enclosure was applied to collect all incident beams at the detector. To realize comparable results to those of full-angle CT, a limited-angle CT approach was implemented, and the frequency range 0.1–3 THz was used in the image reconstruction study. The experimental and simulated images were used to validate the findings, and conductive and non-conductive defects measuring 200 µm were successfully visualized. Additionally, a custom-built user interface enabled us to visualize the field spatial distribution of the THz beam with respect to frequency.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
通过太赫兹计算机断层扫描检测存在缺陷的玻璃纤维增强聚合物
太赫兹(THz)计算机断层扫描(THz CT)具有提供丰富数据的潜力,在检测嵌入缺陷,特别是玻璃纤维增强聚合物内部缺陷演变等应用中,其数据量超过了太赫兹断层成像。为了实现高分辨率 THz CT,我们采用了一种以波传播模拟为指导的系统方法。首先,对太赫兹光束的前波进行微调,以实现 2 毫米的光束直径。为减轻强折射效应并将菲涅尔反射损耗降至最低,制作了折射率匹配材料,并将其用作尖角样品的圆形外壳。为了进一步提高重建分辨率,还使用了一个平面外壳,以便在探测器上收集所有入射光束。为了实现与全角度 CT 相媲美的结果,采用了有限角度 CT 方法,并在图像重建研究中使用了 0.1-3 THz 的频率范围。实验和模拟图像被用来验证研究结果,200 微米的导电和非导电缺陷被成功可视化。此外,通过定制的用户界面,我们还能可视化太赫兹光束随频率的场空间分布。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
3.90
自引率
0.00%
发文量
0
期刊最新文献
Detection of a glass fiber-reinforced polymer with defects by terahertz computed tomography Anisotropic etching of 2D layered materials A first look at the formation of PEO-PDA coatings on 3D titanium Theoretical study on the efficiency of new organic dyes based on (E)-2-(2-(thiophen-3-yl)vinyl)-1,1′-bipyrrole as dye-sensitized solar cell sensitizers Swollen hydrogel nanotechnology: Advanced applications of the rudimentary swelling properties of hydrogels
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1