4.7 Article

Measuring orientation dynamics of carbon fibers by dielectric anisotropy in shear flows

期刊

NDT & E INTERNATIONAL
卷 129, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.ndteint.2022.102646

关键词

Carbon fibers; Orientation dynamics; Dielectric anisotropy; Interdigital electrodes; Shear flow

资金

  1. National Program on Key Basic Research Project [2019YFB1704900]
  2. National Natural Science Foundation Council of China [51635006, 52075196, 52005194]
  3. China Postdoctoral Science Foundation [2019M662615]
  4. Double First-Class-Independent Innovation-Subject Construction [HUST: 2020JYCXJJ055]
  5. Fundamental Research Funds for the Central Universities [5001110032]

向作者/读者索取更多资源

A timely and nondestructive method for measuring the orientation dynamics of carbon fibers is reported. The accuracy of this method is validated by theoretical calculations and experimental results, and a modified model is proposed to explain the orientation dynamics.
Measuring orientation dynamics of carbon fibers is important for manufacturing high-performance composite materials, however, conventional methods fail to timely and non-destructively measure due to destructive sample preparation or complicated data processing from numerous fibers. Herein, we report a timely and nondestructive method that uses two pairs of interdigital electrodes to record dielectric anisotropy induced by carbon fibers orientation. As a proof-of-concept, orientation dynamics of carbon fibers is successfully characterized, the accuracy of which in measuring the final degree of orientation and dynamic orientation process is evidenced by theoretical calculations and optical observations. Experimental results reveal that increasing the fiber aspect ratios, viscosities of solvents and shear rates, could shorten orientation time or increase the final degree of orientation. Meanwhile, a modified model is proposed to explain orientation dynamics with a maximum error of 4.7%. This method has the potential for measuring the orientation dynamics of carbon fibers in the complex structure during processing.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据