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纤维定向估计从X射线暗场图像的纤维增强聚合物使用受约束的球形解卷利用限制的球形解卷

Ben Huyge^1,2, Jonathan Sanctorum^1,2, Ben Jeurissen^1,3

¹imec-Vision Lab, Department of Physics, University of Antwerp, 2000 Antwerp, Belgium.

|July 14, 2023

概括

约束球形解卷 (CSD) 改善了聚合物中的纤维方向估计,在X射线计算机断层扫描 (XCT) 分析中,在小纤维交叉角度的Funk-Radon转换 (FRT) 中表现优于Funk-Radon转换.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
图像物理学的成像

背景情况:

聚合物中的纤维取向对于材料特性至关重要.
射线计算机断层扫描 (XCT) 用于研究纤维的方向.
像Funk-Radon转换 (FRT) 这样的现有方法在低分辨率和小纤维交叉角度方面扎.

研究的目的:

引入受约束的球形解卷 (CSD) 作为光纤方向估计的高级方法.
用边缘照明相位对比成像和蒙特卡洛模拟来评估CSD.
将CSD性能与FRT进行比较,特别是在挑战小光纤交叉角度时.

主要方法:

最初考虑使用基于格子的干涉测量 (GBI) 的无otropic暗场断层扫描.
约束球形解卷 (CSD) 被提出作为FRT的替代方案.
使用边缘照明相位对比成像,通过蒙特卡洛模拟生成暗场图像.

主要成果:

对于70度以下的光纤交叉角度,FRT的准确性很差.
CSD准确地估计了纤维的方向,直至50度的交叉角度.
在估计光纤方向方面,CSD在总体上表现优于FRT.

结论:

与FRT相比,CSD为聚合物中纤维方向分析提供了更好的精度和角度分辨率.
CSD是一种有前途的技术,可以克服基于XCT的纤维分析的局限性.
这项研究突出了边缘照明相对比成像与CSD相结合的潜力.

关键词:

在FRP上使用FRP.有约束的球形解卷.黑暗的场所黑暗的场所边缘照明边缘照明阶段对比成像成像阶段对比成像

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